{"id":570,"date":"2025-11-15T21:54:03","date_gmt":"2025-11-15T13:54:03","guid":{"rendered":"http:\/\/103.236.53.242\/?p=570"},"modified":"2025-11-27T15:21:39","modified_gmt":"2025-11-27T07:21:39","slug":"get-ham-a5","status":"publish","type":"post","link":"http:\/\/www.preluna.xyz\/index.php\/2025\/11\/15\/get-ham-a5\/preluna\/technology\/career-skills\/technology-horizon\/","title":{"rendered":"\u65e0\u7ebf\u7535\u8003\u8bd5A\u8bc1\u8003\u8bd5\u6307\u5357(5)"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">\u591a\u5f84\u4f20\u64ad<\/h2>\n\n\n\n<p><strong><em>\u4ec0\u4e48\u662f\u591a\u5f84\u4f20\u64ad\uff1f<\/em><\/strong>\u7535\u6ce2\u5728\u4ece\u53d1\u5c04\u7aef\u5230\u63a5\u6536\u7aef\u7684\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u5e76\u975e\u53ea\u6cbf\u7740\u4e00\u6761\u76f4\u7ebf\u8def\u5f84\uff08\u76f4\u5c04\u6ce2\uff09\u4f20\u64ad\u3002\u5b83\u4f1a\u901a\u8fc7\u4e0d\u540c\u7684\u8def\u5f84\uff0c\u5982\u88ab\u5730\u9762\u3001\u5efa\u7b51\u7269\u3001\u5c71\u4f53\u3001\u751a\u81f3\u79fb\u52a8\u7684\u8f66\u8f86\u53cd\u5c04\u3001\u6563\u5c04\uff0c\u6700\u7ec8\u8fd9\u4e9b\u4e0d\u540c\u8def\u5f84\u7684\u4fe1\u53f7\u4f1a\u540c\u65f6\u5230\u8fbe\u63a5\u6536\u5929\u7ebf\u3002<\/p>\n\n\n\n<p><strong><em>\u5173\u952e\u540e\u679c\uff1a\u5e72\u6d89<\/em><\/strong>\uff0c\u8fd9\u4e9b\u901a\u8fc7\u4e0d\u540c\u8def\u5f84\u5230\u8fbe\u7684\u4fe1\u53f7\uff0c\u7531\u4e8e\u8d70\u8fc7\u7684\u8ddd\u79bb\u4e0d\u540c\uff0c\u56e0\u6b64\u5b83\u4eec\u7684\u76f8\u4f4d\u4e5f\u4e0d\u540c\u3002\u5f53\u76f8\u4f4d\u76f8\u540c\u7684\u6ce2\u53e0\u52a0\u65f6\uff0c\u4fe1\u53f7\u4f1a\u589e\u5f3a\uff08\u5efa\u8bbe\u6027\u5e72\u6d89\uff09\uff1b\u5f53\u76f8\u4f4d\u76f8\u53cd\u7684\u6ce2\u53e0\u52a0\u65f6\uff0c\u4fe1\u53f7\u4f1a\u51cf\u5f31\u751a\u81f3\u62b5\u6d88\uff08\u7834\u574f\u6027\u5e72\u6d89\uff09\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u79fb\u52a8\u65f6\u4fe1\u53f7\u7684\u5468\u671f\u6027\u53d8\u5316<\/h3>\n\n\n\n<p><strong><em>MC1-0709\uff1a<\/em><\/strong>\u5373\u4fbf\u662f\u5728\u8fbd\u9614\u7684\u5e73\u539f\u6216\u5e7f\u88a4\u7684\u6208\u58c1,\u6211\u4eec\u6240\u6536\u672c\u5730 VHF\/UHF \u4fe1\u53f7\u7684\u5f3a\u5ea6\u4e5f\u4f1a\u4f34\u968f\u8bbe\u5907\u7684\u79fb\u52a8\u9762\u53d1\u751f\u5468\u671f\u6027\u7684\u53d8\u5316\u3002\u4e3b\u8981\u539f\u56e0\u662f:<em><strong>\u6765\u81ea\u76f4\u5c04\u548c\u5730\u9762\u53cd\u5c04\u7b49\u591a\u4e2a\u8def\u5f84\u7684\u65e0\u7ebf\u7535\u6ce2\u76f8\u4e92\u5e72\u6d89\uff0c\u76f8\u6d88\u6216\u76f8\u957f(\u591a\u5f84\u6548\u5e94)<\/strong><\/em> <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u73b0\u8c61\uff1a\u5728\u5f00\u9614\u5730\u5e26\u79fb\u52a8\u65f6\uff0cUHF\/VHF\u4fe1\u53f7\u5f3a\u5ea6\u53d1\u751f\u5468\u671f\u6027\u8d77\u4f0f\u3002<\/li>\n\n\n\n<li>\u539f\u56e0\uff1a\u8fd9\u662f\u591a\u5f84\u4f20\u64ad\u6700\u76f4\u63a5\u7684\u4f53\u73b0\u3002\u76f4\u5c04\u6ce2\u548c\u5730\u9762\u53cd\u5c04\u6ce2\u662f\u4e24\u6761\u6700\u4e3b\u8981\u7684\u8def\u5f84\u3002\u5f53\u4f60\u79fb\u52a8\u65f6\uff0c\u4f60\u76f8\u5bf9\u4e8e\u8fd9\u4e24\u6761\u8def\u5f84\u7684\u7ec8\u70b9\u4f4d\u7f6e\u5728\u6539\u53d8\uff0c\u5bfc\u81f4\u4e24\u6761\u8def\u5f84\u7684\u6ce2\u7a0b\u5dee\u5728\u4e0d\u65ad\u53d8\u5316\u3002\n<ol class=\"wp-block-list\">\n<li>\u6ce2\u7a0b\u5dee\u4e3a\u534a\u6ce2\u957f\u7684\u5076\u6570\u500d\u65f6\uff0c\u4fe1\u53f7\u540c\u76f8\u53e0\u52a0\uff0c\u51fa\u73b0\u4fe1\u53f7\u5cf0\u503c\u3002<\/li>\n\n\n\n<li>\u6ce2\u7a0b\u5dee\u4e3a\u534a\u6ce2\u957f\u7684\u5947\u6570\u500d\u65f6\uff0c\u4fe1\u53f7\u53cd\u76f8\u62b5\u6d88\uff0c\u51fa\u73b0\u4fe1\u53f7\u8c37\u503c\u3002<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>\u8003\u5bdf\u77e5\u8bc6\u70b9\uff1a\n<ol class=\"wp-block-list\">\n<li>\u591a\u5f84\u4f20\u64ad\u7684\u57fa\u672c\u539f\u7406\u3002<\/li>\n\n\n\n<li>\u7535\u78c1\u6ce2\u7684\u5e72\u6d89\u73b0\u8c61\uff08\u5efa\u8bbe\u6027\u5e72\u6d89\u4e0e\u7834\u574f\u6027\u5e72\u6d89\uff09\u3002<\/li>\n\n\n\n<li>\u6ce2\u957f\u3001\u8ddd\u79bb\u4e0e\u76f8\u4f4d\u5dee\u7684\u5173\u7cfb<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li><\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u79fb\u52a8\u51e0\u6b65\u6216\u5fae\u8c03\u9891\u7387\u65e0\u6cd5\u6539\u5584\u901a\u4fe1<\/h3>\n\n\n\n<p><strong>MC1-0710\uff1a<\/strong>\u5728 VHF\/UHF \u9891\u6bb5\u901a\u8054\u65f6\u7684\u4e00\u4e2a\u73b0\u8c61,\u5982\u679c\u8fdc\u65b9\u7535\u53f0\u7ed9\u51fa\u7684\u4fe1\u53f7\u62a5\u544a\u5f88\u5dee\uff0c\u5219\u4ec5\u9700\u79fb\u52a8\u51e0\u6b65\u6216\u5c06\u5de5\u4f5c\u9891\u7387\u6539\u53d8\u6570\u5341\u5343\u8d6b\u5c31\u53ef\u80fd\u663e\u8457\u6539\u5584\u901a\u4fe1\u6548\u679c\u3002\u8fd9\u662f\u56e0\u4e3a:<strong><em>\u591a\u5f84\u4f20\u64ad\u3002\u7ecf\u4e0d\u540c\u8def\u5f84\u8fbe\u5230\u5929\u7ebf\u7684\u7535\u6ce2\u5b58\u5728\u76f8\u4f4d\u548c\u5e45\u5ea6\u5dee\u5f02\uff0c\u76f8\u4e92\u5e72\u6d89\uff0c\u76f8\u6d88\u6216\u76f8\u957f<\/em><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u73b0\u8c61\uff1a\u4fe1\u53f7\u5f88\u5dee\u65f6\uff0c\u5c0f\u8303\u56f4\u79fb\u52a8\u6216\u5fae\u5c0f\u9891\u7387\u53d8\u5316\u65e0\u6548\u3002<\/li>\n\n\n\n<li>\u539f\u56e0\uff1a\n<ul class=\"wp-block-list\">\n<li>\u79fb\u52a8\u51e0\u6b65\u65e0\u6548\uff1aUHF\/VHF\u7684\u6ce2\u957f\u8f83\u77ed\uff08\u4f8b\u5982\uff0cVHF 2\u7c73\u6ce2\uff0cUHF 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class=\"wp-block-list\">\n<li>\u7a7a\u95f4\u9009\u62e9\u6027\u8870\u843d\uff1a\u4fe1\u53f7\u5f3a\u5ea6\u968f\u63a5\u6536\u4f4d\u7f6e\u53d8\u5316\u3002<\/li>\n\n\n\n<li>\u9891\u7387\u9009\u62e9\u6027\u8870\u843d\uff1a\u4fe1\u53f7\u5f3a\u5ea6\u968f\u5de5\u4f5c\u9891\u7387\u53d8\u5316\u3002<\/li>\n\n\n\n<li>\u76f8\u5e72\u5e26\u5bbd\uff1a\u4e00\u4e2a\u4fe1\u9053\u5728\u9891\u7387\u4e0a\u53ef\u4ee5\u89c6\u4e3a\u201c\u5e73\u5766\u201d\u7684\u5bbd\u5ea6\u3002\u5982\u679c\u4fe1\u53f7\u5e26\u5bbd\u5927\u4e8e\u76f8\u5e72\u5e26\u5bbd\uff0c\u5c31\u4f1a\u53d1\u751f\u5931\u771f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u591a\u5f84\u4f20\u64ad\u5bf9\u6570\u636e\u901a\u4fe1\u7684\u5f71\u54cd<\/h3>\n\n\n\n<p><strong>MC1-0711<\/strong>\uff1a\u591a\u5f84\u4f20\u64ad\u5bf9 UHF \u6216 VHF \u6ce2\u6bb5\u6570\u636e\u901a\u4fe1\u7684\u5f71\u54cd\u662f:<strong><em>\u53ef\u80fd\u4f7f\u8bef\u7801\u7387\u4e0a\u5347<\/em><\/strong><\/p>\n\n\n\n<ul 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class=\"wp-block-list\">\n<li>\u65f6\u5ef6\u6269\u5c55\u3002<\/li>\n\n\n\n<li>\u7801\u95f4\u4e32\u6270\u3002<\/li>\n\n\n\n<li>\u4fe1\u9053\u8870\u843d\u5bf9\u6570\u5b57\u4fe1\u53f7\u8bef\u7801\u7387\u7684\u5f71\u54cd\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">ATV\u901a\u4fe1\u4e2d\u56fe\u50cf\u8fb9\u7f18\u7684\u91cd\u5f71<\/h3>\n\n\n\n<p><strong><em>MC2-0712<\/em><\/strong>\u4f7f\u7528VSB\u65b9\u5f0f\u8fdb\u884cATV\u901a\u4fe1\u65f6\uff0c\u5373\u4f7f\u4fe1\u53f7\u76f8\u5bf9\u8f83\u5f3a\uff0c\u6709\u65f6\u6240\u6536\u56fe\u50cf\u7684\u8fb9\u7f18\u4e5f\u6709\u91cd\u5f71\u8fd9\u662f\u56e0\u4e3a:<br><strong><em>\u591a\u5f84\u4f20\u64ad,\u6765\u81ea\u4e0d\u540c\u8def\u5f84\u7684\u4fe1\u53f7\u5230\u8fbe\u63a5\u6536\u5929\u7ebf\u7684\u65f6\u5ef6\u4e0d\u540c\uff0c\u9020\u6210\u91cd\u5f71\uff0c\u53d1\u5c04\u5929\u7ebf\u7684VSWR\u8fc7\u9ad8.\u5982\u679c\u4fe1\u53f7\u5728\u9988\u7ebf\u4e2d\u591a\u6b21\u5f80\u8fd4\u4e8e\u53d1\u5c04\u673a\u548c\u5929\u7ebf\uff0c\u4f1a\u9020\u6210\u91cd\u5f71<\/em><\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7a7a\u95f4\u57df\uff1a\u4f60\u79fb\u52a8\u65f6\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u5728\u53d8\u5316 -&gt; \u7a7a\u95f4\u9009\u62e9\u6027\u8870\u843d\u3002<\/li>\n\n\n\n<li>\u9891\u7387\u57df\uff1a\u4f60\u6539\u53d8\u9891\u7387\u65f6\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u5728\u53d8\u5316 -&gt; \u9891\u7387\u9009\u62e9\u6027\u8870\u843d\u3002<\/li>\n\n\n\n<li>\u65f6\u95f4\u57df\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u6570\u5b57\u4fe1\u53f7\uff1a\u5bfc\u81f4\u7801\u95f4\u4e32\u6270\u3002<\/li>\n\n\n\n<li>\u5bf9\u6a21\u62df\u7535\u89c6\u4fe1\u53f7\uff1a\u5bfc\u81f4\u56fe\u50cf\u91cd\u5f71\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u7535\u6ce2\u4f20\u64ad\u8def\u5f84\u4e0a\u7684\u5927\u6c14\u6298\u5c04\u7387\u5206\u5e03<\/h2>\n\n\n\n<p>\u5f53\u5927\u6c14\u6298\u5c04\u7387\u53d1\u751f\u5f02\u5e38\u53d8\u5316\u65f6\uff0c\u4f1a\u5f2f\u66f2\u7535\u6ce2\u7684\u4f20\u64ad\u8def\u5f84\uff0c\u4f7f\u5176\u80fd\u591f\u4f20\u64ad\u5230\u8fdc\u8d85\u5149\u5b66\u89c6\u8ddd\u7684\u5730\u65b9\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u51b3\u5b9a\u8d85\u77ed\u6ce2\u89c6\u8ddd\u4f20\u64ad\u7684\u6781\u9650\u8ddd\u79bb\u4e3b\u8981\u56e0\u7d20\u662f\u4ec0\u4e48\uff1f<\/h3>\n\n\n\n<p>MC1-0713\uff1a\u51b3\u5b9a\u8d85\u77ed\u6ce2\u89c6\u8ddd\u4f20\u64ad\u8ddd\u79bb\u6781\u9650\u7684\u4e3b\u8981\u56e0\u7d20\u662f:<strong><em>\u53d1\u5c04\u5929\u7ebf\u548c\u63a5\u6536\u5929\u7ebf\u8ddd\u5730\u9762\u7684\u76f8\u5bf9\u9ad8\u5ea6<\/em><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6807\u51c6\u7406\u8bba\uff08\u5149\u5b66\u89c6\u8ddd\uff09\uff1a \u7531\u4e8eVHF\/UHF\uff08\u751a\u9ad8\u9891\/\u7279\u9ad8\u9891\uff09\u6ce2\u6bb5\u7684\u7535\u6ce2\u4e3b\u8981\u4ee5\u76f4\u7ebf\u65b9\u5f0f\u4f20\u64ad\uff0c\u800c\u5730\u7403\u8868\u9762\u662f\u5f2f\u66f2\u7684\uff0c\u6240\u4ee5\u4eceA\u70b9\u53d1\u5c04\u7684\u7535\u6ce2\uff0c\u5728\u8d8a\u8fc7B\u70b9\u7684\u5730\u5e73\u7ebf\u540e\u5c31\u4f1a\u4e00\u76f4\u5411\u4e0a\uff0c\u65e0\u6cd5\u5230\u8fbe\u66f4\u8fdc\u7684C\u70b9\u3002\u8fd9\u5c31\u6784\u6210\u4e86\u4e00\u4e2a\u201c\u89c6\u8ddd\u201d\u4f20\u64ad\u7684\u6781\u9650\u3002<\/li>\n\n\n\n<li>\u8ba1\u7b97\u516c\u5f0f\u7b80\u5316\u7248\uff1a D(km) \u2248 4.12 x(H<sub>t<\/sub>(m)<sup>1\/2<\/sup>+H<sub>r<\/sub>(m)<sup>1\/2<\/sup>)\n<ul class=\"wp-block-list\">\n<li>D\uff1a\u6700\u5927\u89c6\u8ddd\uff08\u516c\u91cc\uff09<\/li>\n\n\n\n<li>Ht\uff1a\u53d1\u5c04\u5929\u7ebf\u9ad8\u5ea6\uff08\u7c73\uff09<\/li>\n\n\n\n<li>Hr\uff1a\u63a5\u6536\u5929\u7ebf\u9ad8\u5ea6\uff08\u7c73\uff09<\/li>\n\n\n\n<li>\u4f8b\u5982\uff0c\u53cc\u65b9\u5929\u7ebf\u90fd\u572810\u7c73\u9ad8\uff0c\u7406\u8bba\u89c6\u8ddd\u7ea6\u4e3a 4.12 * (\u221a10 + \u221a10) \u2248 26\u516c\u91cc\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6838\u5fc3\u8981\u70b9\uff1a \u8fd9\u662f\u5728\u6807\u51c6\u5927\u6c14\u6761\u4ef6\u4e0b\u7684\u7406\u60f3\u6a21\u578b\u3002\u4e00\u65e6\u5927\u6c14\u6761\u4ef6\u53d1\u751f\u53d8\u5316\uff0c\u8fd9\u4e2a\u6a21\u578b\u5c31\u4f1a\u88ab\u6253\u7834\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5927\u6c14\u6298\u5c04\u4e0e\u201c\u5730\u7403\u7b49\u6548\u534a\u5f84\u201d<\/h3>\n\n\n\n<p><strong>MC1-0714<\/strong>:\u6709\u65f6\uff0c\u76f8\u9694\u6570\u767e\u5343\u7c73\u7684\u4e1a\u4f59\u7535\u53f0\u53ef\u4ee5\u5b9e\u73b0VHF\/UHF\u8d85\u89c6\u8ddd\u76f4\u63a5\u8054\u7edc.\u53ef\u80fd\u7684\u539f\u56e0\u662f:<strong><em>\u4fe1\u53f7\u7684\u4f20\u64ad\u8def\u5f84\u4e2d\u51fa\u73b0\u4e86\u5927\u6c14\u6ce2\u5bfc\u73b0\u8c61<\/em><\/strong>,(\u8fd9\u662f\u7406\u89e3\u6240\u6709\u8d85\u89c6\u8ddd\u73b0\u8c61\u7684\u5173\u952e\u3002)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u57fa\u672c\u539f\u7406\uff1a \u7535\u6ce2\u5728\u771f\u7a7a\u4e2d\u4ee5\u76f4\u7ebf\u4f20\u64ad\uff0c\u4f46\u5728\u5927\u6c14\u4e2d\uff0c\u4f1a\u56e0\u4e3a\u7a7a\u6c14\u7684\u6298\u5c04\u7387\uff08\u4e3b\u8981\u7531\u6e29\u5ea6\u3001\u6c14\u538b\u548c\u6e7f\u5ea6\u51b3\u5b9a\uff09\u800c\u53d1\u751f\u5f2f\u66f2\u3002<\/li>\n\n\n\n<li>\u6807\u51c6\u5927\u6c14\u6298\u5c04\uff1a \u5728\u6b63\u5e38\u60c5\u51b5\u4e0b\uff0c\u5bf9\u6d41\u5c42\u7684\u6e29\u5ea6\u968f\u9ad8\u5ea6\u589e\u52a0\u800c\u964d\u4f4e\uff0c\u6c14\u538b\u548c\u6e7f\u5ea6\u4e5f\u968f\u9ad8\u5ea6\u589e\u52a0\u800c\u964d\u4f4e\u3002\u8fd9\u79cd\u5782\u76f4\u5206\u5e03\u4f7f\u5f97\u5927\u6c14\u7684\u6298\u5c04\u7387\u968f\u9ad8\u5ea6\u589e\u52a0\u800c\u51cf\u5c0f\uff0c\u5bfc\u81f4\u7535\u6ce2\u4f20\u64ad\u8def\u5f84\u5411\u5730\u9762\u65b9\u5411\u8f7b\u5fae\u5f2f\u66f2\u3002\u8fd9\u76f8\u5f53\u4e8e\u628a\u7535\u6ce2\u7684\u76f4\u7ebf\u8def\u5f84\u201c\u6273\u5f2f\u201d\u4e86\u4e00\u70b9\uff0c\u4f7f\u5176\u80fd\u8ddf\u968f\u5730\u7403\u7684\u66f2\u7387\u4f20\u64ad\u5230\u66f4\u8fdc\u7684\u5730\u65b9\u3002\u4e3a\u4e86\u7b80\u5316\u8ba1\u7b97\uff0c\u6211\u4eec\u5f15\u5165\u201c\u5730\u7403\u7b49\u6548\u534a\u5f84\u201d\u7684\u6982\u5ff5\u2014\u2014\u5373\u60f3\u8c61\u5730\u7403\u7684\u534a\u5f84\u53d8\u5927\u4e86\uff08\u901a\u5e38\u653e\u59274\/3\u500d\uff09\uff0c\u8fd9\u6837\u7535\u6ce2\u5c31\u53ef\u4ee5\u5728\u8fd9\u4e2a\u201c\u66f4\u5927\u7684\u5730\u7403\u201d\u4e0a\u505a\u76f4\u7ebf\u4f20\u64ad\uff0c\u5176\u6548\u679c\u4e0e\u5b9e\u9645\u5927\u6c14\u6298\u5c04\u4e00\u81f4\u3002<\/li>\n\n\n\n<li>\u5f02\u5e38\u6298\u5c04\uff1a \u5f53\u5927\u6c14\u7684\u5782\u76f4\u7ed3\u6784\u51fa\u73b0\u5f02\u5e38\u65f6\uff0c\u5c31\u4f1a\u4ea7\u751f\u8d85\u6298\u5c04\uff0c\u5bfc\u81f4\u7535\u6ce2\u8def\u5f84\u88ab\u66f4\u5267\u70c8\u5730\u5f2f\u5411\u5730\u9762\uff0c\u4ece\u800c\u5b9e\u73b0\u8d85\u89c6\u8ddd\u4f20\u64ad\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5404\u79cd\u8d85\u89c6\u8ddd\u73b0\u8c61\u7684\u89e3\u91ca<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u76f8\u9694\u6570\u767e\u5343\u7c73\u7684VHF\/UHF\u8054\u7edc &amp; 500km\u8d85\u89c6\u8ddd\u4fe1\u53f7<\/h4>\n\n\n\n<p>MC1-0718,\u6709\u65f6,VHF\/UHF \u4e1a\u4f59\u6ce2\u6bb5\u4e2d\u53ef\u80fd\u51fa\u73b0\u8fdc\u8fbe500\u5343\u7c73\u7684\u201c\u8d85\u89c6\u8ddd\u4f20\u64ad\u201d\u4fe1\u53f7\u3002\u8fd9\u4e0e\u4e0b\u5217\u79cd\u73b0\u8c61\u5bc6\u5207\u76f8\u5173?<strong><em>\u5bf9\u6d41\u5c42\u6563\u5c04<\/em><\/strong>(\u8fd9\u901a\u5e38\u4e0e\u5bf9\u6d41\u5c42\u6ce2\u5bfc\u4f20\u64ad \u548c\u5bf9\u6d41\u5c42\u6563\u5c04\u4f20\u64ad \u6709\u5173)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u6d41\u5c42\u6ce2\u5bfc\u4f20\u64ad\uff1a<\/li>\n\n\n\n<li>\u539f\u56e0\uff1a \u8fd9\u662f\u6700\u5178\u578b\u7684\u8d85\u6298\u5c04\u73b0\u8c61\u3002\u5f53\u5728\u5927\u6c14\u4e2d\u5f62\u6210\u84b8\u53d1\u6ce2\u5bfc\u6216\u8868\u9762\u6ce2\u5bfc\u65f6\uff0c\u5c31\u4f1a\u53d1\u751f\u3002<\/li>\n\n\n\n<li>\u5bfc\u81f4\u6ce2\u5bfc\u7684\u5927\u6c14\u6761\u4ef6\uff08\u60a8\u95ee\u9898\u7684\u5173\u952e\uff09\uff1a\n<ol class=\"wp-block-list\">\n<li>\u5927\u6c14\u9006\u6e29\uff1a \u8fd9\u662f\u6700\u4e3b\u8981\u7684\u539f\u56e0\u3002\u6b63\u5e38\u60c5\u51b5\u4e0b\u6e29\u5ea6\u968f\u9ad8\u5ea6\u964d\u4f4e\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff08\u5982\u6674\u6717\u591c\u665a\u7684\u8f90\u5c04\u51b7\u5374\u3001\u6696\u7a7a\u6c14\u5e73\u6d41\u5230\u51b7\u6d77\u9762\/\u5730\u9762\u4e4b\u4e0a\uff09\uff0c\u4f1a\u51fa\u73b0\u6e29\u5ea6\u968f\u9ad8\u5ea6\u589e\u52a0\u7684\u5c42\u7ed3\uff0c\u8fd9\u4e2a\u5c42\u5c31\u662f\u201c\u9006\u6e29\u5c42\u201d\u3002<\/li>\n\n\n\n<li>\u6e7f\u5ea6\u9aa4\u964d\uff1a \u5728\u9006\u6e29\u5c42\u9876\u90e8\uff0c\u6e7f\u5ea6\u968f\u9ad8\u5ea6\u6025\u5267\u51cf\u5c0f\u3002<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>\u201c\u6ce2\u5bfc\u201d\u7684\u5f62\u6210\uff1a \u9006\u6e29\u5c42\u548c\u6e7f\u5ea6\u9aa4\u964d\u7684\u5171\u540c\u4f5c\u7528\uff0c\u5bfc\u81f4\u8be5\u5c42\u5927\u6c14\u4e2d\u7684\u6298\u5c04\u7387\u968f\u9ad8\u5ea6\u6025\u5267\u51cf\u5c0f\u3002\u8fd9\u4f7f\u5f97\u4ece\u4e0b\u65b9\u4ee5\u4e00\u4e2a\u5c0f\u89d2\u5ea6\u5165\u5c04\u7684\u7535\u6ce2\uff0c\u4f1a\u5728\u8be5\u5c42\u548c\u4e0b\u57ab\u9762\uff08\u6d77\u9762\u6216\u5730\u9762\uff09\u4e4b\u95f4\u50cf\u5728\u6ce2\u5bfc\u7ba1\u4e2d\u4e00\u6837\uff0c\u88ab\u53cd\u590d\u53cd\u5c04\u524d\u8fdb\uff0c\u80fd\u91cf\u8870\u51cf\u6781\u6162\uff0c\u4ece\u800c\u4f20\u64ad\u5230\u6570\u767e\u751a\u81f3\u4e0a\u5343\u516c\u91cc\u4e4b\u5916\u3002\u8fd9\u5b8c\u7f8e\u89e3\u91ca\u4e86\u6e14\u4e1a\u6ce2\u6bb5\u63a5\u6536\u4e0a\u5343\u516c\u91cc\u4fe1\u53f7\u7684\u73b0\u8c61\u3002<\/li>\n\n\n\n<li>\u53d1\u751f\u573a\u666f\uff1a \u5728\u9ad8\u538b\u810a\u63a7\u5236\u4e0b\u7684\u7a33\u5b9a\u5929\u6c14\uff0c\u7279\u522b\u662f\u5728\u6d77\u4e0a\u548c\u590f\u5b63\u5927\u9646\u6027\u6c14\u5019\u533a\u7684\u6674\u6717\u591c\u665a\u548c\u6e05\u6668\uff0c\u975e\u5e38\u5e38\u89c1\u3002<\/li>\n\n\n\n<li>\u5bf9\u6d41\u5c42\u6563\u5c04\u4f20\u64ad\uff1a \u5bf9\u6d41\u5c42\u4e2d\u5e76\u975e\u5747\u5300\u4ecb\u8d28\uff0c\u5b58\u5728\u5927\u91cf\u7684\u6e4d\u6d41\u3001\u65cb\u6da1\u548c\u4e0d\u5747\u5300\u4f53\u3002\u7535\u6ce2\u9047\u5230\u8fd9\u4e9b\u4e0d\u5747\u5300\u4f53\u4f1a\u53d1\u751f\u6563\u5c04\uff0c\u5176\u4e2d\u4e00\u5c0f\u90e8\u5206\u80fd\u91cf\u4f1a\u6563\u5c04\u5230\u63a5\u6536\u70b9\u3002\u8fd9\u662f\u4e00\u79cd\u7a33\u5b9a\u7684\u3001\u4f46\u4fe1\u53f7\u8f83\u5f31\u7684\u8d85\u89c6\u8ddd\u4f20\u64ad\u65b9\u5f0f\uff0c\u901a\u4fe1\u8ddd\u79bb\u901a\u5e38\u5728200-600\u516c\u91cc\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">6\u7c73\u62162\u7c73\u6ce2\u6bb5\u6536\u5230\u4e0a\u5343\u5343\u7c73\u5916\u7684\u4fe1\u53f7<\/h4>\n\n\n\n<p>MC1-0715,\u6709\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u6709\u65f6\uff0c\u6211\u4eec\u53ef\u4ee5\u57286\u7c73\u62162\u7c73\u4e1a\u4f59\u6ce2\u6bb5\u4e2d\u6536\u5230\u4e0a\u5343\u5343\u7c73\u5916\u7684\u201c\u8d85\u89c6\u8ddd\u4f20\u64ad\u201d\u4fe1\u53f7\u3002\u8fd9\u4e0e\u4e0b\u5217\u54ea\u79cd\u73b0\u8c61\u5bc6\u5207\u76f8\u5173?<strong><em>\u7a81\u53d1E\u5c42\u7684\u4f20\u64ad<\/em><\/strong>(\u8fd9\u901a\u5e38\u4e0e\u7535\u79bb\u5c42\u73b0\u8c61\u6709\u5173\uff0c\u7279\u522b\u662f\u7a81\u53d1E\u5c42\u4f20\u64ad\u3002)<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7a81\u53d1E\u5c42\uff1a\n<ul class=\"wp-block-list\">\n<li>\u539f\u56e0\uff1a \u5728\u79bb\u5730\u9762\u7ea6100\u516c\u91cc\u9ad8\u7684\u7535\u79bb\u5c42E\u5c42\u4e2d\uff0c\u6709\u65f6\u4f1a\u7a81\u7136\u51fa\u73b0\u4e00\u7247\u91d1\u5c5e\u79bb\u5b50\uff08\u6e90\u4e8e\u6d41\u661f\u71c3\u70e7\uff09\u9ad8\u5ea6\u5bc6\u96c6\u7684\u533a\u57df\uff0c\u5176\u7535\u5b50\u5bc6\u5ea6\u6781\u9ad8\u3002<\/li>\n\n\n\n<li>\u4f20\u64ad\u673a\u5236\uff1a \u8fd9\u7247\u9ad8\u5bc6\u5ea6\u7535\u79bb\u533a\u57df\u50cf\u4e00\u9762\u201c\u865a\u62df\u7684\u955c\u5b50\u201d\uff0c\u80fd\u591f\u53cd\u5c04\u901a\u5e38\u4f1a\u7a7f\u900f\u7535\u79bb\u5c42\u7684VHF\u7535\u6ce2\uff08\u5c24\u5176\u662f50MHz\u5de6\u53f3\u76846\u7c73\u6ce2\u6bb5\uff0c\u6709\u65f6\u751a\u81f3\u80fd\u5f71\u54cd\u52302\u7c73\u6ce2\u6bb5\uff09\u3002<\/li>\n\n\n\n<li>\u7279\u70b9\uff1a \u4fe1\u53f7\u5f3a\uff0c\u4f20\u64ad\u8ddd\u79bb\u8fdc\uff08\u901a\u5e381000-2500\u516c\u91cc\uff09\uff0c\u4f46\u5177\u6709\u7a81\u53d1\u6027\u548c\u4e0d\u7a33\u5b9a\u6027\uff0c\u5e38\u5728\u590f\u5b63\u51fa\u73b0\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u5982\u679c\u60a8\u6536\u5230\u4e86\u4e00\u4e2a\u4e0a\u5343\u5343\u7c73\u5916\u7684VHF\u4fe1\u53f7\uff0c\u6700\u53ef\u80fd\u7684\u539f\u56e0\u662f\u4ec0\u4e48\uff1f<\/h4>\n\n\n\n<p>MC1-0717:\u5982\u679c\u4f60\u6536\u5230\u4e86\u4e00\u4e2a\u4e0a\u5343\u5343\u7c73\u5916\u7684 VHF \u4fe1\u53f7\uff0c\u6700\u53ef\u80fd\u7684\u539f\u56e0\u662f:<strong><em>\u4fe1\u53f7\u7ecf\u7535\u79bb\u5c42\u7684\u7a81\u53d1E\u5c42\u53cd\u5c04\u800c\u6765<\/em><\/strong><\/p>\n\n\n\n<p>\u6839\u636e\u9891\u6bb5\u548c\u8ddd\u79bb\uff0c\u6700\u53ef\u80fd\u7684\u539f\u56e0\u6709\u4f18\u5148\u7ea7\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5bf9\u4e8e2\u7c73\uff08144MHz\uff09\u53ca\u66f4\u9ad8\u9891\u7387\uff1a \u51e0\u4e4e\u53ef\u4ee5\u80af\u5b9a\u662f\u5bf9\u6d41\u5c42\u6ce2\u5bfc\u4f20\u64ad\uff0c\u5c24\u5176\u662f\u5728\u6cbf\u6d77\u5730\u533a\u6216\u7279\u5b9a\u5929\u6c14\u5f62\u52bf\u4e0b\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e6\u7c73\uff0850MHz\uff09\uff1a \u7a81\u53d1E\u5c42\u4f20\u64ad\u7684\u53ef\u80fd\u6027\u6700\u5927\uff0c\u5c24\u5176\u662f\u5728\u590f\u5b63\u3002\u5f53\u7136\uff0c\u5f3a\u7684\u5bf9\u6d41\u5c42\u6ce2\u5bfc\u4e5f\u6709\u53ef\u80fd\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u6838\u5fc3\uff1a\u5927\u6c14\uff08\u5bf9\u6d41\u5c42\/\u7535\u79bb\u5c42\uff09\u7ed3\u6784\u5f02\u5e38\u5bfc\u81f4\u7684\u5f02\u5e38\u4f20\u64ad\u673a\u5236\u3002<\/h4>\n\n\n\n<p>\u8fd9\u4e9b\u73b0\u8c61\u53ef\u4ee5\u6e05\u6670\u5730\u5206\u4e3a\u4e24\u5927\u7c7b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5bf9\u6d41\u5c42\u673a\u5236 &#8211; \u7531\u4f4e\u5c42\u5927\u6c14\u7684\u6e29\u5ea6\u3001\u6e7f\u5ea6\u3001\u538b\u529b\u5206\u5e03\u5f02\u5e38\u5f15\u8d77\u3002\n<ul class=\"wp-block-list\">\n<li>\u6b63\u5e38\u6298\u5c04\uff1a \u6807\u51c6\u89c6\u8ddd\u4f20\u64ad\u3002<\/li>\n\n\n\n<li>\u8d85\u6298\u5c04\uff1a \u5ef6\u4f38\u901a\u4fe1\u8ddd\u79bb\u3002<\/li>\n\n\n\n<li>\u6ce2\u5bfc\u4f20\u64ad\uff1a \u8d85\u6298\u5c04\u7684\u6781\u7aef\u60c5\u51b5\uff0c\u5f62\u6210\u201c\u5927\u6c14\u7ba1\u9053\u201d\uff0c\u5b9e\u73b0\u6570\u767e\u81f3\u4e0a\u5343\u516c\u91cc\u7684VHF\/UHF\u901a\u4fe1\u3002\uff08\u89e3\u91ca\u6e14\u4e1a\u6ce2\u6bb5\u3001\u6570\u767e\u516c\u91cc\u8054\u7edc\uff09<\/li>\n\n\n\n<li>\u5bf9\u6d41\u5c42\u6563\u5c04\uff1a \u7531\u5927\u6c14\u6e4d\u6d41\u5f15\u8d77\uff0c\u63d0\u4f9b~500\u516c\u91cc\u7684\u76f8\u5bf9\u7a33\u5b9a\u5f31\u4fe1\u53f7\u94fe\u8def\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7535\u79bb\u5c42\u673a\u5236 &#8211; \u7531\u9ad8\u5c42\u5927\u6c14\u7684\u7535\u79bb\u5bc6\u5ea6\u5f02\u5e38\u5f15\u8d77\u3002\n<ul class=\"wp-block-list\">\n<li>\u7a81\u53d1E\u5c42\uff1a 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class=\"wp-block-list\">\n<li>\u9632\u6b62\u7535\u78c1\u5e72\u6270\uff08EMI\uff09\uff1a\u672a\u68c0\u6d4b\u7684\u53d1\u5c04\u673a\u53ef\u80fd\u5b58\u5728\u9891\u7387\u504f\u79fb\u3001\u6742\u6563\u8f90\u5c04\u7b49\u95ee\u9898\uff0c\u76f4\u63a5\u901a\u8fc7\u5929\u7ebf\u8f90\u5c04\u4f1a\u5e72\u6270\u5176\u4ed6\u5408\u6cd5\u65e0\u7ebf\u7535\u4e1a\u52a1\uff08\u5982\u6c11\u822a\u3001\u901a\u4fe1\u3001\u5e7f\u64ad\u7b49\uff09\uff0c\u8fdd\u53cd\u65e0\u7ebf\u7535\u7ba1\u7406\u6cd5\u89c4\u3002<\/li>\n\n\n\n<li>\u4fdd\u62a4\u53d1\u5c04\u673a\uff1a\u5929\u7ebf\u7aef\u53e3\u82e5\u5f00\u8def\u6216\u963b\u6297\u4e0d\u5339\u914d\uff08\u5982\u672a\u63a5\u5929\u7ebf\u65f6\uff09\uff0c\u4f1a\u5bfc\u81f4\u53d1\u5c04\u673a\u8f93\u51fa\u7aef\u4ea7\u751f\u53cd\u5c04\u529f\u7387\uff08\u9a7b\u6ce2\u6bd4\u8fc7\u9ad8\uff09\uff0c\u53ef\u80fd\u70e7\u6bc1\u529f\u7387\u653e\u5927\u5668\uff08PA\uff09\u7b49\u5173\u952e\u90e8\u4ef6\u3002\u5047\u8d1f\u8f7d\u901a\u5e38\u4e3a50\u03a9\uff08\u6216\u8bbe\u5907\u6807\u79f0\u963b\u6297\uff09\u7684\u7eaf\u7535\u963b\u8d1f\u8f7d\uff0c\u80fd\u5b8c\u5168\u5438\u6536\u53d1\u5c04\u673a\u8f93\u51fa\u7684\u5c04\u9891\u529f\u7387\uff0c\u907f\u514d\u53cd\u5c04\u3002<\/li>\n\n\n\n<li>\u6ee1\u8db3\u68c0\u6d4b\u6761\u4ef6\uff1a\u68c0\u6d4b\u673a\u6784\u9700\u8981\u6d4b\u91cf\u53d1\u5c04\u673a\u7684\u8f93\u51fa\u529f\u7387\u3001\u9891\u7387\u8bef\u5dee\u3001\u6742\u6563\u6291\u5236\u7b49\u6307\u6807\uff0c\u5047\u8d1f\u8f7d\u53ef\u786e\u4fdd\u6240\u6709\u8f93\u51fa\u529f\u7387\u88ab\u53ef\u63a7\u5438\u6536\uff0c\u4fbf\u4e8e\u7cbe\u786e\u6d4b\u8bd5\u3002<\/li>\n<\/ol>\n\n\n\n<p>MC1-0820:\u65e0\u7ebf\u7535\u53d1\u5c04\u5668\u4e2d\u8c03\u5236\u5668\u7684\u4f5c\u7528?\u8c03\u5236\u5668\u662f\u53d1\u5c04\u673a\u7684\u6838\u5fc3\u6a21\u5757\uff0c\u5176\u4f5c\u7528\u662f\u5c06\u4f4e\u9891\u57fa\u5e26\u4fe1\u53f7\uff08\u5982\u8bed\u97f3\u3001\u6570\u636e\u3001\u56fe\u50cf\uff09\u52a0\u8f7d\u5230\u9ad8\u9891\u8f7d\u6ce2\u4e0a\uff0c\u4f7f\u4fe1\u53f7\u5177\u5907\u8fdc\u8ddd\u79bb\u4f20\u8f93\u7684\u80fd\u529b\u3002\u5177\u4f53\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9891\u7387\u53d8\u6362\uff1a\u57fa\u5e26\u4fe1\u53f7\u9891\u7387\u4f4e\uff08\u5982\u97f3\u989120Hz-20kHz\uff09\uff0c\u65e0\u6cd5\u901a\u8fc7\u5929\u7ebf\u6709\u6548\u8f90\u5c04\uff08\u5929\u7ebf\u5c3a\u5bf8\u9700\u4e0e\u6ce2\u957f\u5339\u914d\uff09\u3002\u8c03\u5236\u5668\u5c06\u57fa\u5e26\u4fe1\u53f7\u201c\u642d\u8f7d\u201d\u5230\u9ad8\u9891\u8f7d\u6ce2\uff08\u5982\u4e1a\u4f59\u65e0\u7ebf\u7535\u5e38\u7528\u76841.8MHz-144MHz\uff09\uff0c\u4f7f\u5176\u9002\u5408\u5929\u7ebf\u8f90\u5c04\u3002<\/li>\n\n\n\n<li>\u4fe1\u53f7\u590d\u7528\uff1a\u901a\u8fc7\u8c03\u5236\uff08\u5982\u8c03\u9891\u3001\u8c03\u5e45\u3001\u6570\u5b57\u8c03\u5236\uff09\uff0c\u4e0d\u540c\u7528\u6237\u7684\u4fe1\u53f7\u53ef\u5728\u540c\u4e00\u9891\u6bb5\u5185\u533a\u5206\uff08\u5982\u4e0d\u540c\u9891\u7387\u6216\u8c03\u5236\u65b9\u5f0f\u7684\u4fe1\u53f7\u5171\u5b58\uff09\u3002<\/li>\n\n\n\n<li>\u6297\u5e72\u6270\u4f18\u5316\uff1a\u9009\u62e9\u5408\u9002\u7684\u8c03\u5236\u65b9\u5f0f\uff08\u5982FM\u6297\u566a\u58f0\u4f18\u4e8eAM\uff09\u53ef\u63d0\u5347\u4fe1\u53f7\u6297\u5e72\u6270\u80fd\u529b\u3002<\/li>\n<\/ul>\n\n\n\n<p>MC1-0822:\u63a5\u6536\u673a\u89e3\u8c03\u5668\u7684\u4f5c\u7528?\u89e3\u8c03\u5668\u662f\u63a5\u6536\u673a\u7684\u6838\u5fc3\u6a21\u5757\uff0c\u5176\u4f5c\u7528\u662f\u4ece\u5df2\u8c03\u5236\u7684\u9ad8\u9891\u4fe1\u53f7\u4e2d\u63d0\u53d6\u539f\u59cb\u57fa\u5e26\u4fe1\u53f7\uff0c\u5b8c\u6210\u201c\u89e3\u7801\u201d\u8fc7\u7a0b\u3002\u5177\u4f53\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8f7d\u6ce2\u540c\u6b65\u4e0e\u4fe1\u606f\u6062\u590d\uff1a\u63a5\u6536\u7684\u9ad8\u9891\u4fe1\u53f7\u662f\u8f7d\u6ce2\u4e0e\u57fa\u5e26\u4fe1\u53f7\u53e0\u52a0\u7684\u7ed3\u679c\uff0c\u89e3\u8c03\u5668\u9700\u901a\u8fc7\u9501\u76f8\u73af\uff08PLL\uff09\u7b49\u6280\u672f\u9501\u5b9a\u8f7d\u6ce2\u9891\u7387\u548c\u76f8\u4f4d\uff0c\u518d\u4ece\u4e2d\u5206\u79bb\u51fa\u57fa\u5e26\u4fe1\u53f7\uff08\u5982\u8bed\u97f3\u7684\u97f3\u9891\u4fe1\u53f7\u3001\u6570\u636e\u7684\u6570\u5b57\u6bd4\u7279\u6d41\uff09\u3002<\/li>\n\n\n\n<li>\u566a\u58f0\u6291\u5236\uff1a\u901a\u8fc7\u6ee4\u6ce2\u3001\u5747\u8861\u7b49\u6280\u672f\u964d\u4f4e\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u5f15\u5165\u7684\u566a\u58f0\u548c\u5931\u771f\uff0c\u5c3d\u53ef\u80fd\u8fd8\u539f\u539f\u59cb\u4fe1\u53f7\u3002<\/li>\n<\/ul>\n\n\n\n<p>MC1-0823:\u9009\u7528\u89e3\u8c03\u5668\u7684\u4e3b\u8981\u8003\u8651\u56e0\u7d20:\u89e3\u8c03\u5668\u7684\u9009\u62e9\u9700\u7ed3\u5408\u7cfb\u7edf\u9700\u6c42\uff0c\u6838\u5fc3\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u8c03\u5236\u65b9\u5f0f\u5339\u914d\uff1a\u4e0d\u540c\u8c03\u5236\u5bf9\u5e94\u4e0d\u540c\u89e3\u8c03\u65b9\u6848\uff08\u5982AM\u7528\u5305\u7edc\u68c0\u6ce2\/\u540c\u6b65\u68c0\u6ce2\uff0cFM\u7528\u9274\u9891\u5668\uff0cSSB\u7528\u540c\u6b65\u68c0\u6ce2\uff0c\u6570\u5b57\u8c03\u5236\u7528\u76f8\u5e72\u89e3\u8c03\/\u975e\u76f8\u5e72\u89e3\u8c03\uff09\u3002<\/li>\n\n\n\n<li>\u5e26\u5bbd\u4e0e\u52a8\u6001\u8303\u56f4\uff1a\u89e3\u8c03\u5668\u9700\u8986\u76d6\u76ee\u6807\u4fe1\u53f7\u7684\u5e26\u5bbd\uff08\u5982FM\u4fe1\u53f7\u5e26\u5bbd\u7ea6200kHz\uff09\uff0c\u540c\u65f6\u5177\u5907\u8db3\u591f\u52a8\u6001\u8303\u56f4\u4ee5\u5e94\u5bf9\u5f3a\u5e72\u6270\u6216\u5927\u4fe1\u53f7\u8f93\u5165\u3002<\/li>\n\n\n\n<li>\u566a\u58f0\u6027\u80fd\uff1a\u89e3\u8c03\u5668\u7684\u4fe1\u566a\u6bd4\uff08SNR\uff09\u51b3\u5b9a\u4e86\u63a5\u6536\u7075\u654f\u5ea6\uff0c\u4f8b\u5982FM\u89e3\u8c03\u5668\u7684\u95e8\u9650\u6548\u5e94\u9700\u4f4e\u4e8e\u5b9e\u9645\u566a\u58f0\u6c34\u5e73\u3002<\/li>\n\n\n\n<li>\u7ebf\u6027\u5ea6\u4e0e\u5931\u771f\uff1a\u975e\u7ebf\u6027\u5931\u771f\u4f1a\u5bfc\u81f4\u4fe1\u53f7\u7578\u53d8\uff08\u5982AM\u89e3\u8c03\u7684\u8d1f\u5cf0\u5207\u5272\u5931\u771f\uff09\uff0c\u9700\u9009\u62e9\u7ebf\u6027\u5ea6\u9ad8\u7684\u5668\u4ef6\u3002<\/li>\n\n\n\n<li>\u6210\u672c\u4e0e\u590d\u6742\u5ea6\uff1a\u540c\u6b65\u68c0\u6ce2\uff08\u5982SSB\uff09\u9700\u672c\u5730\u8f7d\u6ce2\u6e90\uff0c\u6210\u672c\u9ad8\u4e8e\u5305\u7edc\u68c0\u6ce2\uff08AM\uff09\uff1b\u6570\u5b57\u89e3\u8c03\u9700DSP\u5904\u7406\uff0c\u590d\u6742\u5ea6\u66f4\u9ad8\u3002<\/li>\n<\/ol>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u65e0\u7ebf\u7535\u53d1\u5c04\u4e0e\u63a5\u6536\u7cfb\u7edf\u67b6\u6784\uff1a\u53d1\u5c04\u673a\uff08\u8c03\u5236\u5668\u3001\u529f\u7387\u653e\u5927\u3001\u963b\u6297\u5339\u914d\uff09\u4e0e\u63a5\u6536\u673a\uff08\u4f4e\u566a\u58f0\u653e\u5927\u3001\u89e3\u8c03\u5668\uff09\u7684\u529f\u80fd\u6a21\u5757\u3002<\/li>\n\n\n\n<li>\u8c03\u5236\u4e0e\u89e3\u8c03\u6280\u672f\uff1a\u8c03\u5236\u7684\u76ee\u7684\uff08\u9891\u8c31\u642c\u79fb\uff09\u3001\u5e38\u89c1\u8c03\u5236\u65b9\u5f0f\uff08AM\/FM\/SSB\/\u6570\u5b57\u8c03\u5236\uff09\u53ca\u5bf9\u5e94\u89e3\u8c03\u539f\u7406\u3002<\/li>\n\n\n\n<li>\u5c04\u9891\u6d4b\u8bd5\u4e0e\u7535\u78c1\u517c\u5bb9\uff08EMC\uff09\uff1a\u5047\u8d1f\u8f7d\u5728\u6d4b\u8bd5\u4e2d\u7684\u4f5c\u7528\uff08\u907f\u514d\u5e72\u6270\u3001\u4fdd\u62a4\u8bbe\u5907\u3001\u6ee1\u8db3\u68c0\u6d4b\u6761\u4ef6\uff09\u3002<\/li>\n\n\n\n<li>\u8bbe\u5907\u68c0\u6d4b\u4e0e\u5408\u89c4\u6027\uff1a\u4e1a\u4f59\u65e0\u7ebf\u7535\u8bbe\u5907\u9700\u901a\u8fc7\u68c0\u6d4b\u786e\u4fdd\u7b26\u5408\u9891\u7387\u3001\u529f\u7387\u3001\u6742\u6563\u7b49\u6280\u672f\u6307<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e9a\u97f3\u9891\u9759\u566a\u7cfb\u7edf CTCSS<\/h2>\n\n\n\n<p>\u4e9a\u97f3\u9891\u9759\u566a\u7cfb\u7edf CTCSS\uff08Continuous Tone-Coded Squelch System\uff09 \u6240\u7528\u7684\u58f0\u8c03\u9891\u7387\u8303\u56f4\u901a\u5e38\u4e3a 67 Hz \u81f3 254 Hz\uff0c\u5177\u4f53\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6807\u51c6\u9891\u7387\u8303\u56f4\n<ul class=\"wp-block-list\">\n<li>\u6838\u5fc3\u533a\u95f4\uff1aCTCSS \u4fe1\u53f7\u9891\u7387\u8303\u56f4\u88ab\u5b9a\u4e49\u4e3a 67.0 Hz \u81f3 254.1 Hz\uff0c\u5c5e\u4e8e\u4f4e\u4e8e\u4eba\u7c7b\u8bed\u97f3\u80fd\u91cf\u96c6\u4e2d\u533a\uff08300 Hz\u20133 kHz\uff09\u7684\u4e9a\u97f3\u9891\u6bb5\u3002<\/li>\n\n\n\n<li>\u9891\u70b9\u95f4\u9694\uff1a\u6807\u51c6 CTCSS \u7cfb\u7edf\u5305\u542b 50 \u4e2a\u56fa\u5b9a\u9891\u70b9\uff0c\u76f8\u90bb\u9891\u70b9\u95f4\u9694\u4e3a 2\u20133 Hz\uff08\u4f8b\u5982 67.0 Hz\u300169.3 Hz\u300171.9 Hz\u2026\u2026254.1 Hz\uff09\uff0c\u4ee5\u907f\u514d\u76f8\u90bb\u9891\u70b9\u95f4\u7684\u4e32\u6270\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6280\u672f\u7279\u6027\n<ul class=\"wp-block-list\">\n<li>\u4eba\u8033\u4e0d\u53ef\u611f\u77e5\uff1a\u7531\u4e8e\u9891\u7387\u4f4e\u4e8e 200 Hz\uff08\u90e8\u5206\u9891\u70b9\u63a5\u8fd1 300 Hz\uff09\uff0c\u8fd9\u4e9b\u4fe1\u53f7\u65e0\u6cd5\u88ab\u4eba\u7c7b\u76f4\u63a5\u542c\u5230\uff0c\u4f46\u63a5\u6536\u8bbe\u5907\u53ef\u901a\u8fc7\u6ee4\u6ce2\u5668\u68c0\u6d4b\u5e76\u54cd\u5e94\u3002<\/li>\n\n\n\n<li>\u6297\u5e72\u6270\u80fd\u529b\uff1a\u901a\u8fc7\u53e0\u52a0\u4f4e\u9891\u7f16\u7801\u4fe1\u53f7\uff0cCTCSS \u53ef\u6709\u6548\u8fc7\u6ee4\u540c\u9891\u5e72\u6270\u548c\u80cc\u666f\u566a\u58f0\uff0c\u4ec5\u5141\u8bb8\u643a\u5e26\u5339\u914d\u7f16\u7801\u7684\u4fe1\u53f7\u901a\u8fc7\u9759\u566a\u7535\u8def\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5e94\u7528\u573a\u666f\n<ul class=\"wp-block-list\">\n<li>\u4e2d\u7ee7\u53f0\u63a7\u5236\uff1a\u4e2d\u7ee7\u53f0\u901a\u8fc7\u68c0\u6d4b\u7279\u5b9a CTCSS \u9891\u7387\uff08\u5982 88.5 Hz\uff09\u51b3\u5b9a\u662f\u5426\u8f6c\u53d1\u4fe1\u53f7\uff0c\u9632\u6b62\u975e\u6cd5\u5360\u7528\u3002<\/li>\n\n\n\n<li>\u7ec4\u7fa4\u9694\u79bb\uff1a\u4e0d\u540c\u7528\u6237\u7ec4\u4f7f\u7528\u4e0d\u540c\u4e9a\u97f3\u9891\u7f16\u7801\uff08\u5982 100 Hz \u548c 123 Hz\uff09\uff0c\u5b9e\u73b0\u540c\u9891\u6bb5\u5185\u591a\u7ec4\u72ec\u7acb\u901a\u4fe1\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4e0e\u5176\u4ed6\u6280\u672f\u7684\u5bf9\u6bd4\n<ul class=\"wp-block-list\">\n<li>DCS\uff08\u6570\u5b57\u4e9a\u97f3\u9891\uff09\uff1aDCS \u4f7f\u7528 23 \u4f4d Golay \u7801 \u8c03\u5236\u6570\u5b57\u4fe1\u53f7\uff0c\u9891\u7387\u8303\u56f4\u66f4\u9ad8\uff08\u7ea6 134\u2013206 Hz\uff09\uff0c\u4f46 CTCSS \u56e0\u517c\u5bb9\u6027\u66f4\u5e7f\uff0c\u4ecd\u662f\u4e3b\u6d41\u9009\u62e9\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u901a\u5e26\u77e9\u5f62\u7cfb\u6570\uff08\u6216\u901a\u5e26\u5f62\u72b6\u7cfb\u6570\uff09<\/h2>\n\n\n\n<p>MC1-0825:\u5bf9\u4e8e\u6bd4\u8f83\u8003\u7a76\u7684\u63a5\u6536\u673a\uff0c\u5176\u8bf4\u660e\u4e66\u4e2d\u5e38\u5e38\u5217\u51fa\u4e00\u9879\u201c\u901a\u5e26\u77e9\u5f62\u7cfb\u6570\u201d\u6216\u201c\u901a\u5e26\u5f62\u72b6\u7cfb\u6570\u6307\u6807\uff0c\u662f\u7528\u6765\u63cf\u8ff0:<strong><em>\u5e26\u901a\u6ee4\u6ce2\u5668\u9891\u7387\u7279\u6027\u66f2\u7ebf\u4e24\u4fa7\u659c\u5761\u7684\u9661\u5ced\u7a0b\u5ea6<\/em><\/strong><\/p>\n\n\n\n<p>\u901a\u5e26\u77e9\u5f62\u7cfb\u6570\uff08Rectangular Coefficient of Passband\uff09\uff0c\u53c8\u79f0\u5e26\u5bbd\u5f62\u72b6\u7cfb\u6570\uff0c\u662f\u8861\u91cf\u63a5\u6536\u673a\u901a\u5e26\u9891\u7387\u54cd\u5e94\u7279\u6027\u7684\u5173\u952e\u6307\u6807\u3002\u5176\u5b9a\u4e49\u4e3a<strong><em>\u77e9\u5f62\u7cfb\u6570 = \u901a\u5e2660dB\u5e26\u5bbd \/ \u901a\u5e266dB\u5e26\u5bbd<\/em><\/strong><\/p>\n\n\n\n<p>\u5176\u4e2d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>6dB\u5e26\u5bbd\uff1a\u63a5\u6536\u673a\u901a\u5e26\u5185\u4fe1\u53f7\u5e45\u5ea6\u4e0b\u964d\u81f3\u5cf0\u503c6dB\u65f6\u7684\u9891\u7387\u8303\u56f4\uff08\u901a\u5e38\u5bf9\u5e94\u4e3b\u4fe1\u53f7\u7684\u6709\u6548\u63a5\u6536\u5e26\u5bbd\uff09\u3002<\/li>\n\n\n\n<li>60dB\u5e26\u5bbd\uff1a\u901a\u5e26\u5185\u4fe1\u53f7\u5e45\u5ea6\u4e0b\u964d\u81f3\u5cf0\u503c60dB\u65f6\u7684\u9891\u7387\u8303\u56f4\uff08\u53cd\u6620\u63a5\u6536\u673a\u5bf9\u5f3a\u5e72\u6270\u4fe1\u53f7\u7684\u6291\u5236\u80fd\u529b\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8be5\u6307\u6807\u7684\u6838\u5fc3\u610f\u4e49\u662f\u63cf\u8ff0\u901a\u5e26\u5185\u9891\u7387\u54cd\u5e94\u7684\u201c\u5e73\u5766\u5ea6\u201d\u548c\u963b\u5e26\u8870\u51cf\u7684\u201c\u9661\u5ced\u5ea6\u201d\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u77e9\u5f62\u7cfb\u6570\u8d8a\u63a5\u8fd11\uff0c\u901a\u5e26\u5f62\u72b6\u8d8a\u63a5\u8fd1\u7406\u60f3\u77e9\u5f62\uff08\u5e26\u5185\u6ce2\u52a8\u5c0f\uff0c\u963b\u5e26\u8870\u51cf\u9661\u5ced\uff09\uff0c\u9009\u62e9\u6027\u8d8a\u597d\uff1b<\/li>\n\n\n\n<li>\u77e9\u5f62\u7cfb\u6570\u8d8a\u5927\uff0c\u901a\u5e26\u201c\u62d6\u5c3e\u201d\u8d8a\u660e\u663e\uff08\u5e26\u5185\u6ce2\u52a8\u5927\uff0c\u963b\u5e26\u8870\u51cf\u7f13\u6162\uff09\uff0c\u9009\u62e9\u6027\u8d8a\u5dee\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e24\u53f0\u63a5\u6536\u673a\u7684\u6307\u6807\u5206\u6790\u4e0e\u7ed3\u8bba<\/h3>\n\n\n\n<p>MC1-0826:\u6839\u636e\u8bf4\u660e\u4e66\u7ed9\u51fa\u7684\u6280\u672f\u6307\u6807\uff0c\u4e24\u53f0\u4e1a\u4f59\u65e0\u7ebf\u7535\u63a5\u6536\u673a\u5728USB\u65b9\u5f0f\u4e0b\u9009\u62e9\u5e26\u5bbd\u4e3a2.7kHz\u7684\u6ee4\u6ce2\u5668\u65f6\u5177\u6709\u4e0d\u540c\u7684\u201c\u901a\u5e26\u77e9\u5f62\u7cfb\u6570\u201d.\u63a5\u6536\u673aA\u7684\u201c60dB \u5e26\u5bbd\u5bf96dB \u5e26\u5bbd\u7684\u77e9\u5f62\u7cfb\u6570\u4e3a3.8\uff0c\u63a5\u6536\u673aB\u7684\u4e3a5.\u7531\u6b64\u53ef\u5f97\u51fa\u7ed3\u8bba:<strong>A \u673a\u5bf9\u90bb\u8fd1\u9891\u9053\u4e05\u6270\u7684\u6291\u5236\u80fd\u529b\u6bd4 B\u673a\u5f3a<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u673aA\uff1a\u77e9\u5f62\u7cfb\u6570 = 3.8 \u2192 60dB\u5e26\u5bbd = 3.8 \u00d7 2.7kHz \u2248 10.26kHz<\/li>\n\n\n\n<li>\u63a5\u6536\u673aB\uff1a\u77e9\u5f62\u7cfb\u6570 = 5 \u2192 60dB\u5e26\u5bbd = 5 \u00d7 2.7kHz = 13.5kHz<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7ed3\u8bba1\uff1a\u63a5\u6536\u673aA\u7684\u9009\u62e9\u6027\u66f4\u4f18\n<ul class=\"wp-block-list\">\n<li>\u77e9\u5f62\u7cfb\u6570\u8d8a\u5c0f\uff0c\u8bf4\u660e\u4ece6dB\u523060dB\u7684\u8870\u51cf\u8fc7\u7a0b\u4e2d\uff0c\u5e26\u5bbd\u6269\u5c55\u8d8a\u5c11\uff0c\u963b\u5e26\u8870\u51cf\u66f4\u9661\u5ced\u3002\u63a5\u6536\u673aA\u768460dB\u5e26\u5bbd\uff0810.26kHz\uff09\u663e\u8457\u5c0f\u4e8e\u63a5\u6536\u673aB\uff0813.5kHz\uff09\uff0c\u610f\u5473\u7740\u5176\u5bf9\u5e26\u5916\u5e72\u6270\u4fe1\u53f7\u7684\u6291\u5236\u80fd\u529b\u66f4\u5f3a\uff0c\u80fd\u66f4\u6709\u6548\u5730\u6ee4\u9664\u90bb\u8fd1\u4fe1\u9053\u6216\u5f3a\u5e72\u6270\u4fe1\u53f7\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7ed3\u8bba2\uff1a\u63a5\u6536\u673aA\u7684\u901a\u5e26\u5f62\u72b6\u66f4\u63a5\u8fd1\u7406\u60f3\u77e9\u5f62,\u63a5\u6536\u673aA\u7684\u901a\u5e26\u9891\u7387\u54cd\u5e94\u66f4\u5e73\u5766\uff08\u5e26\u5185\u6ce2\u52a8\u5c0f\uff09\uff0c\u800c\u63a5\u6536\u673aB\u7684\u901a\u5e26\u201c\u62d6\u5c3e\u201d\u66f4\u660e\u663e\uff08\u5e26\u5185\u53ef\u80fd\u5b58\u5728\u66f4\u591a\u6ce2\u52a8\uff09\u3002\u8fd9\u4e00\u5dee\u5f02\u4f1a\u5f71\u54cd\u5b9e\u9645\u63a5\u6536\u6548\u679c\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5bf9\u4e8e\u7a84\u5e26\u4fe1\u53f7\uff08\u5982\u5355\u8fb9\u5e26\u4fe1\u53f7\uff09\uff0c\u63a5\u6536\u673aA\u80fd\u66f4\u7cbe\u51c6\u5730\u4fdd\u7559\u6709\u7528\u4fe1\u53f7\uff0c\u51cf\u5c11\u5931\u771f\uff1b<\/li>\n\n\n\n<li>\u5bf9\u4e8e\u5e26\u5916\u5f3a\u5e72\u6270\uff08\u5982\u76f8\u90bb\u4fe1\u9053\u7684\u5f3a\u4fe1\u53f7\uff09\uff0c\u63a5\u6536\u673aA\u7684\u6291\u5236\u80fd\u529b\u66f4\u5f3a\uff0c\u901a\u8bdd\u8d28\u91cf\u66f4\u7a33\u5b9a\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7ed3\u8bba3\uff1a\u63a5\u6536\u673aB\u7684\u6297\u5e72\u6270\u80fd\u529b\u8f83\u5f31\n<ul class=\"wp-block-list\">\n<li>\u7531\u4e8e\u63a5\u6536\u673aB\u768460dB\u5e26\u5bbd\u66f4\u5bbd\uff0c\u5176\u5bf9\u5e26\u5916\u5e72\u6270\u7684\u8870\u51cf\u66f4\u6162\uff0c\u5bb9\u6613\u8ba9\u66f4\u591a\u5e72\u6270\u4fe1\u53f7\u8fdb\u5165\u89e3\u8c03\u7535\u8def\uff0c\u5bfc\u81f4\u80cc\u666f\u566a\u58f0\u589e\u52a0\u6216\u6709\u7528\u4fe1\u53f7\u5931\u771f\uff08\u5c24\u5176\u5728\u5f3a\u5e72\u6270\u73af\u5883\u4e2d\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u603b\u7ed3:\u901a\u5e26\u77e9\u5f62\u7cfb\u6570\u662f\u8861\u91cf\u63a5\u6536\u673a\u9009\u62e9\u6027\u7684\u6838\u5fc3\u6307\u6807\u3002\u5728\u6b64\u6848\u4f8b\u4e2d\uff0c\u63a5\u6536\u673aA\u7684\u77e9\u5f62\u7cfb\u6570\u66f4\u5c0f\uff083.8 &lt; 5\uff09\uff0c\u8868\u660e\u5176\u901a\u5e26\u5f62\u72b6\u66f4\u63a5\u8fd1\u77e9\u5f62\uff0c\u5bf9\u5e26\u5916\u5e72\u6270\u7684\u6291\u5236\u80fd\u529b\u66f4\u5f3a\uff0c\u9009\u62e9\u6027\u66f4\u4f18\uff1b\u63a5\u6536\u673aB\u5219\u56e0\u77e9\u5f62\u7cfb\u6570\u8f83\u5927\uff0c\u901a\u5e26\u201c\u62d6\u5c3e\u201d\u660e\u663e\uff0c\u6297\u5e72\u6270\u80fd\u529b\u8f83\u5f31\u3002\u8fd9\u4e00\u5dee\u5f02\u5728\u5b9e\u9645\u901a\u4fe1\u4e2d\u76f4\u63a5\u5f71\u54cd\u63a5\u6536\u8d28\u91cf\uff0c\u5c24\u5176\u5728\u591a\u4fe1\u53f7\u6216\u5f3a\u5e72\u6270\u73af\u5883\u4e0b\u66f4\u4e3a\u663e\u8457\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u63a5\u6536\u673a\u524d\u7f6e\u653e\u5927\u5668\u7684\u4e3b\u8981\u4f5c\u7528<\/h2>\n\n\n\n<p>MC1-0827:\u63a5\u6536\u673a\u524d\u7f6e\u653e\u5927\u5668\u7684\u4e3b\u8981\u4f5c\u7528\u662f:<strong><em>\u964d\u4f4e\u63a5\u6536\u673a\u5185\u90e8\u566a\u58f0\u7684\u5f71\u54cd<\/em><\/strong><\/p>\n\n\n\n<p>\u63a5\u6536\u673a\u524d\u7f6e\u653e\u5927\u5668\uff08\u901a\u5e38\u79f0\u4e3a\u4f4e\u566a\u58f0\u653e\u5927\u5668\uff0cLNA\uff09\u4f4d\u4e8e\u63a5\u6536\u673a\u6700\u524d\u7aef\uff0c\u7d27\u90bb\u5929\u7ebf\u63a5\u53e3\uff0c\u5176\u6838\u5fc3\u4f5c\u7528\u53ef\u5f52\u7eb3\u4e3a\u4ee5\u4e0b\u51e0\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u653e\u5927\u5fae\u5f31\u5c04\u9891\u4fe1\u53f7\uff1a\u5929\u7ebf\u63a5\u6536\u7684\u5c04\u9891\u4fe1\u53f7\u6781\u5176\u5fae\u5f31\uff08\u901a\u5e38\u4e3a\u5fae\u4f0f\u7ea7\u751a\u81f3\u7eb3\u4f0f\u7ea7\uff09\uff0c\u524d\u7f6e\u653e\u5927\u5668\u7684\u9996\u8981\u4efb\u52a1\u662f\u5c06\u8fd9\u4e9b\u4fe1\u53f7\u653e\u5927\u5230\u540e\u7eed\u7535\u8def\uff08\u5982\u6df7\u9891\u5668\u3001\u4e2d\u9891\u653e\u5927\u5668\uff09\u53ef\u6709\u6548\u5904\u7406\u7684\u6c34\u5e73\uff0c\u5f25\u8865\u4fe1\u53f7\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u635f\u8017\uff08\u5982\u540c\u8f74\u7535\u7f06\u8870\u51cf\u3001\u8fde\u63a5\u5668\u635f\u8017\u7b49\uff09\u3002<\/li>\n\n\n\n<li>\u964d\u4f4e\u7cfb\u7edf\u6574\u4f53\u566a\u58f0\uff1a\u6839\u636e\u566a\u58f0\u7cfb\u6570\u7ea7\u8054\u516c\u5f0f\uff0c\u524d\u7f6e\u7ea7\u7684\u566a\u58f0\u5bf9\u6574\u4e2a\u63a5\u6536\u673a\u7cfb\u7edf\u7684\u566a\u58f0\u8d21\u732e\u6700\u5927\u3002\u56e0\u6b64\uff0c\u524d\u7f6e\u653e\u5927\u5668\u901a\u5e38\u91c7\u7528\u4f4e\u566a\u58f0\u5668\u4ef6\uff08\u5982\u573a\u6548\u5e94\u7ba1\u6216\u4e13\u7528\u4f4e\u566a\u58f0\u6676\u4f53\u7ba1\uff09\u8bbe\u8ba1\uff0c\u5c3d\u53ef\u80fd\u51cf\u5c0f\u81ea\u8eab\u4ea7\u751f\u7684\u566a\u58f0\uff0c\u4ee5\u63d0\u5347\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u3002<\/li>\n\n\n\n<li>\u963b\u6297\u5339\u914d\u4e0e\u4fe1\u53f7\u9694\u79bb\uff1a\u524d\u7f6e\u653e\u5927\u5668\u63d0\u4f9b\u9ad8\u8f93\u5165\u963b\u6297\uff08\u901a\u5e38\u4e0e\u5929\u7ebf\u963b\u6297\u5339\u914d\uff0c\u598250\u03a9\uff09\uff0c\u51cf\u5c11\u4fe1\u53f7\u5728\u5929\u7ebf\u4e0e\u63a5\u6536\u673a\u4e4b\u95f4\u7684\u53cd\u5c04\u635f\u8017\uff1b\u540c\u65f6\u4f5c\u4e3a\u7f13\u51b2\u7ea7\uff0c\u9694\u79bb\u540e\u7eed\u7535\u8def\u5bf9\u5929\u7ebf\u7aef\u7684\u8d1f\u8f7d\u6548\u5e94\uff0c\u907f\u514d\u4fe1\u53f7\u8870\u51cf\u3002<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">FM\u8bdd\u97f3\u901a\u8054\u65f6\uff0c\u4e0d\u80fd\u5355\u51ed\u63a5\u6536\u5668\u58f0\u97f3\u5927\u5c0f\u51c6\u786e\u5224\u65ad\u4fe1\u53f7\u5f3a\u5ea6<\/h2>\n\n\n\n<p>MC1-0828:\u5728FM\u8bdd\u97f3\u901a\u8054\u4e2d\uff0c\u4ec5\u901a\u8fc7\u63a5\u6536\u7aef\u58f0\u97f3\u7684\u5927\u5c0f\u5224\u65ad\u5bf9\u65b9\u4fe1\u53f7\u5f3a\u5f31\u5e76\u4e0d\u53ef\u9760\uff0c\u4e3b\u8981\u539f\u56e0\u5982\u4e0b\uff1a<strong><em>(\u4e0d\u80fd\u3002\u9274\u9891\u5668\u6240\u89e3\u8c03\u7684\u58f0\u97f3\uff0c\u5176\u5927\u5c0f\u4ec5\u53d6\u51b3\u4e8e\u4e2d\u9891\u4fe1\u53f7\u7684\u9891\u504f\uff0c\u4e0e\u4e2d\u9891\u4fe1\u53f7\u7684\u5e45\u5ea6\u65e0\u5173\u51b5\u4e14\uff0c\u4e2d\u9891\u4fe1\u53f7\u5728\u8fdb\u5165\u9274\u9891\u5668\u4e4b\u524d\u65e9\u5df2\u88ab\u9650\u5e45\u7535\u8def\u5207\u9f50\uff0c\u5df2\u65e0\u6cd5\u9274\u522b\u5f3a\u5f31)<\/em><\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>FM\u7684\u81ea\u52a8\u589e\u76ca\u63a7\u5236\uff08AGC\uff09\u4f5c\u7528\uff1a\u73b0\u4ee3\u63a5\u6536\u673a\u666e\u904d\u96c6\u6210AGC\u7535\u8def\uff0c\u5176\u6838\u5fc3\u529f\u80fd\u662f\u901a\u8fc7\u53cd\u9988\u8c03\u8282\u524d\u7aef\u653e\u5927\u5668\u548c\u4e2d\u9891\u653e\u5927\u5668\u7684\u589e\u76ca\uff0c\u4f7f\u8f93\u51fa\u97f3\u9891\u7535\u5e73\u4fdd\u6301\u7a33\u5b9a\u3002\u5373\u4f7f\u8f93\u5165\u4fe1\u53f7\u5f3a\u5ea6\u5728\u4e00\u5b9a\u8303\u56f4\u5185\u53d8\u5316\uff08\u672a\u8d85\u51faAGC\u52a8\u6001\u8303\u56f4\uff09\uff0c\u8f93\u51fa\u58f0\u97f3\u7684\u5927\u5c0f\u4e5f\u4e0d\u4f1a\u663e\u8457\u6ce2\u52a8\u3002\u56e0\u6b64\uff0c\u58f0\u97f3\u5927\u5c0f\u53ef\u80fd\u88abAGC\u201c\u5f52\u4e00\u5316\u201d\uff0c\u65e0\u6cd5\u76f4\u63a5\u53cd\u6620\u8f93\u5165\u4fe1\u53f7\u7684\u5f3a\u5f31\u3002<\/li>\n\n\n\n<li>FM\u7684\u95e8\u9650\u6548\u5e94\uff1aFM\u89e3\u8c03\u5b58\u5728\u201c\u95e8\u9650\u6548\u5e94\u201d\u2014\u2014\u5f53\u8f93\u5165\u4fe1\u566a\u6bd4\uff08\u4fe1\u53f7\u529f\u7387\u4e0e\u566a\u58f0\u529f\u7387\u4e4b\u6bd4\uff09\u9ad8\u4e8e\u95e8\u9650\u503c\uff08\u901a\u5e38\u4e3a10dB\u5de6\u53f3\uff09\u65f6\uff0c\u8f93\u51fa\u4fe1\u566a\u6bd4\u968f\u8f93\u5165\u4fe1\u566a\u6bd4\u589e\u52a0\u800c\u7f13\u6162\u6539\u5584\uff0c\u58f0\u97f3\u8d28\u91cf\u7a33\u5b9a\uff1b\u4f46\u5f53\u8f93\u5165\u4fe1\u566a\u6bd4\u4f4e\u4e8e\u95e8\u9650\u65f6\uff0c\u8f93\u51fa\u4fe1\u566a\u6bd4\u4f1a\u6025\u5267\u6076\u5316\uff08\u566a\u58f0\u7206\u53d1\u5f0f\u589e\u957f\uff09\uff0c\u6b64\u65f6\u58f0\u97f3\u4f1a\u4ece\u6e05\u6670\u53d8\u4e3a\u6a21\u7cca\u6216\u5145\u6ee1\u566a\u58f0\u3002\u7136\u800c\uff0c\u5728\u95e8\u9650\u4ee5\u4e0a\u65f6\uff0c\u58f0\u97f3\u5927\u5c0f\u5e76\u4e0d\u4f1a\u56e0\u4fe1\u53f7\u589e\u5f3a\u800c\u660e\u663e\u53d8\u5927\uff0c\u4ec5\u8d28\u91cf\u53ef\u80fd\u7565\u6709\u63d0\u5347\uff08\u5982\u80cc\u666f\u566a\u58f0\u66f4\u5c0f\uff09\uff0c\u56e0\u6b64\u65e0\u6cd5\u901a\u8fc7\u58f0\u97f3\u5927\u5c0f\u533a\u5206\u201c\u5f3a\u4fe1\u53f7\u201d\u4e0e\u201c\u521a\u597d\u8fc7\u95e8\u9650\u7684\u4fe1\u53f7\u201d\u3002<\/li>\n\n\n\n<li>\u8bdd\u97f3\u4fe1\u53f7\u7684\u52a8\u6001\u7279\u6027\uff1a\u53d1\u4fe1\u65b9\u7684\u8bdd\u97f3\u672c\u8eab\u5177\u6709\u52a8\u6001\u8303\u56f4\uff08\u5982\u8f7b\u58f0\u8bf4\u8bdd\u4e0e\u5927\u58f0\u558a\u53eb\uff09\uff0c\u5176\u8c03\u5236\u6df1\u5ea6\u7684\u53d8\u5316\u4f1a\u76f4\u63a5\u5bfc\u81f4\u63a5\u6536\u7aef\u58f0\u97f3\u5927\u5c0f\u7684\u53d8\u5316\uff0c\u8fd9\u4e0e\u63a5\u6536\u4fe1\u53f7\u7684\u5f3a\u5ea6\u65e0\u5173\u3002\u4f8b\u5982\uff0c\u5bf9\u65b9\u964d\u4f4e\u97f3\u91cf\u65f6\uff0c\u63a5\u6536\u7aef\u58f0\u97f3\u53ef\u80fd\u53d8\u5c0f\uff0c\u4f46\u5b9e\u9645\u4fe1\u53f7\u5f3a\u5ea6\u5e76\u672a\u51cf\u5f31\u3002<\/li>\n\n\n\n<li>\u975e\u7ebf\u6027\u5931\u771f\u7684\u5f71\u54cd\uff1a\u82e5\u4fe1\u53f7\u8fc7\u5f3a\uff08\u8d85\u51fa\u63a5\u6536\u673a\u7ebf\u6027\u8303\u56f4\uff09\uff0c\u53ef\u80fd\u5bfc\u81f4\u524d\u7aef\u653e\u5927\u5668\u6216\u6df7\u9891\u5668\u9971\u548c\uff0c\u4ea7\u751f\u524a\u6ce2\u5931\u771f\uff0c\u6b64\u65f6\u58f0\u97f3\u53ef\u80fd\u51fa\u73b0\u7578\u53d8\uff08\u5982\u6c99\u54d1\u3001\u7834\u97f3\uff09\uff0c\u4f46\u8fd9\u79cd\u201c\u58f0\u97f3\u53d8\u5316\u201d\u662f\u5931\u771f\u7684\u7ed3\u679c\uff0c\u800c\u975e\u4fe1\u53f7\u5f3a\u5ea6\u7684\u6b63\u5e38\u53cd\u6620\u3002<\/li>\n<\/ol>\n\n\n\n<p>\u7ed3\u8bba:\u63a5\u6536\u673a\u524d\u7f6e\u653e\u5927\u5668\u7684\u6838\u5fc3\u662f\u4f4e\u566a\u58f0\u653e\u5927\u4e0e\u963b\u6297\u5339\u914d\uff0c\u63d0\u5347\u7075\u654f\u5ea6\uff1b\u800c\u5728FM\u8bdd\u97f3\u901a\u8054\u4e2d\uff0c\u7531\u4e8eAGC\u3001\u95e8\u9650\u6548\u5e94\u3001\u8bdd\u97f3\u52a8\u6001\u53ca\u975e\u7ebf\u6027\u5931\u771f\u7b49\u56e0\u7d20\uff0c\u63a5\u6536\u7aef\u58f0\u97f3\u5927\u5c0f\u65e0\u6cd5\u51c6\u786e\u53cd\u6620\u5bf9\u65b9\u4fe1\u53f7\u7684\u5b9e\u9645\u5f3a\u5ea6\uff0c\u9700\u7ed3\u5408\u5176\u4ed6\u6307\u6807\uff08\u5982\u80cc\u666f\u566a\u58f0\u6c34\u5e73\u3001\u5931\u771f\u7a0b\u5ea6\u6216\u63a5\u6536\u673a\u663e\u793a\u7684\u4fe1\u53f7\u5f3a\u5ea6\u6307\u793a\uff08RSSI\uff09\uff09\u7efc\u5408\u5224\u65ad\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">WFM\u4e0eNFM<\/h2>\n\n\n\n<p>WFM\uff08\u5bbd\u5e26\u8c03\u9891\uff09\u548cNFM\uff08\u7a84\u5e26\u8c03\u9891\uff09\u662f\u8c03\u9891\uff08FM\uff09\u4fe1\u53f7\u7684\u4e24\u79cd\u4e0d\u540c\u8c03\u5236\u65b9\u5f0f\uff0c\u4e3b\u8981\u533a\u522b\u5728\u4e8e\u9891\u504f\uff08\u9891\u7387\u504f\u79fb\u8303\u56f4\uff09\u548c\u5e26\u5bbd\u5360\u7528\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>WFM\uff08Wideband FM\uff09\n<ul class=\"wp-block-list\">\n<li>\u9891\u504f\u8303\u56f4\uff1a\u901a\u5e38\u4e3a\u00b175 kHz\uff08\u5982FM\u5e7f\u64ad\uff09\uff0c\u90e8\u5206\u573a\u666f\u53ef\u8fbe\u00b150 kHz\uff08\u5982\u7535\u89c6\u4f34\u97f3\uff09\u3002<\/li>\n\n\n\n<li>\u5e26\u5bbd\uff1a\u5360\u7528\u7ea6200 kHz\u5e26\u5bbd\uff08\u5e7f\u64ad\u6807\u51c6\uff09\uff0c\u53ef\u5bb9\u7eb3\u66f4\u5bbd\u7684\u97f3\u9891\u9891\u8c31\uff08\u598220 Hz~15 kHz\u4eba\u8033\u53ef\u8fa8\u8303\u56f4\uff09\uff0c\u97f3\u8d28\u66f4\u63a5\u8fd1\u9ad8\u4fdd\u771f\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\uff1a\u4e3b\u8981\u7528\u4e8e\u5e7f\u64ad\u3001\u7535\u89c6\u4f34\u97f3\u7b49\u5bf9\u97f3\u8d28\u8981\u6c42\u9ad8\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>NFM\uff08Narrowband FM\uff09\n<ul class=\"wp-block-list\">\n<li>\u9891\u504f\u8303\u56f4\uff1a\u901a\u5e38\u4e3a\u00b12.5 kHz~\u00b15 kHz\uff08\u5982\u4e1a\u4f59\u65e0\u7ebf\u7535\u8bed\u97f3\u901a\u4fe1\uff09\u3002<\/li>\n\n\n\n<li>\u5e26\u5bbd\uff1a\u5360\u7528\u7ea612.5 kHz~25 kHz\u5e26\u5bbd\uff0c\u901a\u8fc7\u538b\u7f29\u9891\u504f\u63d0\u5347\u9891\u8c31\u5229\u7528\u7387\uff0c\u9002\u5408\u8bed\u97f3\u901a\u4fe1\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\uff1a\u5bf9\u8bb2\u673a\u3001\u4e1a\u4f59\u65e0\u7ebf\u7535\u7b49\u9700\u8981\u8282\u7701\u9891\u8c31\u8d44\u6e90\u7684\u573a\u666f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e0d\u540c\u63a5\u6536\u6a21\u5f0f\u4e0b\u7684\u4fe1\u53f7\u8868\u73b0<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7528NFM\u6a21\u5f0f\u63a5\u6536WFM\u4fe1\u53f7<strong>,\u73b0\u8c61\uff1a<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u975e\u7ebf\u6027\u5931\u771f\uff1aWFM\u4fe1\u53f7\u7684\u9891\u504f\u8fdc\u8d85NFM\u63a5\u6536\u673a\u7684\u89e3\u8c03\u8303\u56f4\uff0c\u5bfc\u81f4\u9ad8\u9891\u90e8\u5206\u88ab\u622a\u65ad\uff0c\u97f3\u9891\u51fa\u73b0\u65ad\u7eed\u3001\u5931\u771f\uff08\u5982\u4eba\u58f0\u5c16\u9510\u6216\u6a21\u7cca\uff09\u3002<\/li>\n\n\n\n<li>\u7075\u654f\u5ea6\u4e0b\u964d\uff1aNFM\u63a5\u6536\u673a\u5bf9\u7a84\u5e26\u4fe1\u53f7\u66f4\u654f\u611f\uff0c\u4f46WFM\u4fe1\u53f7\u5e26\u5bbd\u8fc7\u5bbd\uff0c\u90e8\u5206\u9891\u8c31\u53ef\u80fd\u843d\u5728\u63a5\u6536\u673a\u6ee4\u6ce2\u5668\u5916\uff0c\u5bfc\u81f4\u4fe1\u566a\u6bd4\u964d\u4f4e\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\uff1a\u7528NFM\u63a5\u6536FM\u5e7f\u64ad\u65f6\uff0c\u80cc\u666f\u97f3\u4e50\u7684\u9ad8\u9891\u90e8\u5206\uff08\u5982\u9572\u7247\u58f0\uff09\u53ef\u80fd\u4e22\u5931\uff0c\u4eba\u58f0\u4e5f\u53ef\u80fd\u56e0\u9891\u504f\u8fc7\u5927\u800c\u5931\u771f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7528WFM\u6a21\u5f0f\u63a5\u6536NFM\u4fe1\u53f7,<strong>\u73b0\u8c61\uff1a<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u97f3\u91cf\u8f83\u5c0f\uff1aWFM\u63a5\u6536\u673a\u7684\u81ea\u52a8\u589e\u76ca\u63a7\u5236\uff08AGC\uff09\u53ef\u80fd\u56e0\u4fe1\u53f7\u5e26\u5bbd\u4e0d\u8db3\u800c\u65e0\u6cd5\u5145\u5206\u653e\u5927\uff0c\u5bfc\u81f4\u8f93\u51fa\u97f3\u91cf\u504f\u4f4e\u3002<\/li>\n\n\n\n<li>\u7075\u654f\u5ea6\u4f18\u5316\uff1aWFM\u63a5\u6536\u673a\u5bf9\u5bbd\u5e26\u4fe1\u53f7\u66f4\u654f\u611f\uff0c\u53ef\u6355\u6349\u5230NFM\u4fe1\u53f7\u7684\u5168\u90e8\u9891\u8c31\uff0c\u4f46\u53ef\u80fd\u56e0\u566a\u58f0\u5e26\u5bbd\u589e\u52a0\u5bfc\u81f4\u4fe1\u566a\u6bd4\u65e0\u660e\u663e\u6539\u5584\u3002<\/li>\n\n\n\n<li>\u793a\u4f8b\uff1a\u7528WFM\u63a5\u6536\u5bf9\u8bb2\u673a\u4fe1\u53f7\u65f6\uff0c\u8bed\u97f3\u6e05\u6670\u5ea6\u5c1a\u53ef\uff0c\u4f46\u80cc\u666f\u566a\u58f0\u53ef\u80fd\u66f4\u660e\u663e\uff08\u56e0\u63a5\u6536\u673a\u5e26\u5bbd\u66f4\u5bbd\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u6838\u5fc3\u539f\u56e0\u4e0e\u6280\u672f\u539f\u7406<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6ee4\u6ce2\u5668\u5339\u914d\u95ee\u9898\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u673a\u7684\u5e26\u901a\u6ee4\u6ce2\u5668\uff08BPF\uff09\u6839\u636e\u8c03\u5236\u65b9\u5f0f\u8bbe\u8ba1\uff1a\n<ul class=\"wp-block-list\">\n<li>NFM\u63a5\u6536\u673a\u7684\u6ee4\u6ce2\u5668\u5e26\u5bbd\u8f83\u7a84\uff08\u598212.5 kHz\uff09\uff0c\u65e0\u6cd5\u5b8c\u6574\u901a\u8fc7WFM\u4fe1\u53f7\uff08250 kHz\uff09\uff0c\u5bfc\u81f4\u4fe1\u53f7\u622a\u65ad\u3002<\/li>\n\n\n\n<li>WFM\u63a5\u6536\u673a\u7684\u6ee4\u6ce2\u5668\u5e26\u5bbd\u8f83\u5bbd\uff08\u5982200 kHz\uff09\uff0c\u53ef\u63a5\u6536NFM\u4fe1\u53f7\uff0c\u4f46\u4f1a\u5f15\u5165\u66f4\u591a\u5e26\u5916\u566a\u58f0\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u89e3\u8c03\u5668\u7279\u6027\n<ul class=\"wp-block-list\">\n<li>\u9274\u9891\u5668\uff08FM\u89e3\u8c03\u5668\uff09\u5bf9\u9891\u504f\u654f\u611f\uff1a\n<ul class=\"wp-block-list\">\n<li>NFM\u89e3\u8c03\u5668\u8bbe\u8ba1\u7528\u4e8e\u5c0f\u9891\u504f\uff08\u00b12.5 kHz\uff09\uff0c\u65e0\u6cd5\u5904\u7406WFM\u7684\u5927\u9891\u504f\uff08\u00b175 kHz\uff09\uff0c\u5bfc\u81f4\u89e3\u8c03\u4fe1\u53f7\u5931\u771f\u3002<\/li>\n\n\n\n<li>WFM\u89e3\u8c03\u5668\u53ef\u5904\u7406\u5927\u9891\u504f\uff0c\u4f46\u5bf9\u5c0f\u9891\u504f\u4fe1\u53f7\u7684\u589e\u76ca\u53ef\u80fd\u4e0d\u8db3\uff0c\u5bfc\u81f4\u97f3\u91cf\u964d\u4f4e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u566a\u58f0\u4e0e\u4fe1\u566a\u6bd4\uff08SNR\uff09\n<ul class=\"wp-block-list\">\n<li>NFM\u63a5\u6536\u673a\u56e0\u5e26\u5bbd\u7a84\uff0c\u566a\u58f0\u529f\u7387\u8f83\u4f4e\uff0c\u4f46\u622a\u65adWFM\u4fe1\u53f7\u4f1a\u5f15\u5165\u5e26\u5916\u566a\u58f0\uff0c\u53cd\u800c\u964d\u4f4eSNR\u3002<\/li>\n\n\n\n<li>WFM\u63a5\u6536\u673a\u5e26\u5bbd\u5bbd\uff0c\u566a\u58f0\u529f\u7387\u8f83\u9ad8\uff0c\u4f46\u63a5\u6536NFM\u4fe1\u53f7\u65f6\u53ef\u80fd\u56e0\u4fe1\u53f7\u5e26\u5bbd\u4e0d\u8db3\u5bfc\u81f4\u6709\u6548\u4fe1\u566a\u6bd4\u672a\u663e\u8457\u63d0\u5347\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u6743\u8861<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9891\u8c31\u6548\u7387\uff1aNFM\u901a\u8fc7\u7a84\u5e26\u5bbd\u652f\u6301\u66f4\u591a\u4fe1\u9053\uff0c\u9002\u5408\u4e1a\u4f59\u65e0\u7ebf\u7535\u7b49\u9891\u8c31\u8d44\u6e90\u7d27\u5f20\u7684\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u97f3\u8d28\u9700\u6c42\uff1aWFM\u727a\u7272\u9891\u8c31\u6548\u7387\u6362\u53d6\u9ad8\u4fdd\u771f\uff0c\u9002\u5408\u5e7f\u64ad\u7b49\u5bf9\u97f3\u8d28\u8981\u6c42\u9ad8\u7684\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u517c\u5bb9\u6027\uff1a\u4e24\u79cd\u6a21\u5f0f\u9700\u901a\u8fc7\u8bbe\u5907\u8bbe\u7f6e\u5339\u914d\uff0c\u8de8\u6a21\u5f0f\u63a5\u6536\u9700\u6743\u8861\u5931\u771f\u4e0e\u7075\u654f\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>NFM\u63a5\u6536WFM\uff1a\u5931\u771f\u663e\u8457\uff0c\u97f3\u8d28\u4e0b\u964d\uff0c\u4f46\u53ef\u52c9\u5f3a\u63a5\u6536\u3002<\/li>\n\n\n\n<li>WFM\u63a5\u6536NFM\uff1a\u97f3\u91cf\u504f\u5c0f\uff0c\u4f46\u8bed\u97f3\u53ef\u61c2\u5ea6\u8f83\u9ad8\u3002<\/li>\n\n\n\n<li>\u672c\u8d28\u5dee\u5f02\uff1a\u9891\u504f\u4e0e\u5e26\u5bbd\u8bbe\u8ba1\u5bfc\u81f4\u89e3\u8c03\u80fd\u529b\u4e0d\u517c\u5bb9\uff0c\u9700\u6839\u636e\u573a\u666f\u9009\u62e9\u8c03\u5236\u65b9\u5f0f\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8c03\u9891\u63a5\u6536\u673a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u8c03\u9891\u63a5\u6536\u673a\u5728\u65e0\u4fe1\u53f7\u65f6\u8f93\u51fa\u7684\u201c\u6c99\u6c99\u58f0\u201d<\/h3>\n\n\n\n<p>\u8c03\u9891\u63a5\u6536\u673a\u5728\u65e0\u4fe1\u53f7\u65f6\u8f93\u51fa\u7684\u201c\u6c99\u6c99\u58f0\u201d\u672c\u8d28\u4e0a\u662f\u63a5\u6536\u673a\u7684\u672c\u5e95\u566a\u58f0\uff08\u5e95\u566a\uff09\uff0c\u662f\u63a5\u6536\u673a\u5185\u90e8\u7535\u5b50\u70ed\u8fd0\u52a8\u3001\u5916\u90e8\u7535\u78c1\u5e72\u6270\u53ca\u4fe1\u53f7\u89e3\u8c03\u8fc7\u7a0b\u5171\u540c\u4f5c\u7528\u7684\u7ed3\u679c\u3002\u4ee5\u4e0b\u4ece\u566a\u58f0\u6765\u6e90\u3001\u5f62\u6210\u673a\u5236\u53ca\u5f71\u54cd\u56e0\u7d20\u4e09\u65b9\u9762\u8be6\u7ec6\u89e3\u6790\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u566a\u58f0\u7684\u6838\u5fc3\u6765\u6e90<\/h4>\n\n\n\n<p>\u8c03\u9891\u63a5\u6536\u673a\u7684\u672c\u5e95\u566a\u58f0\u4e3b\u8981\u7531\u5185\u90e8\u566a\u58f0\u548c\u5916\u90e8\u566a\u58f0\u4e24\u90e8\u5206\u53e0\u52a0\u800c\u6210\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5185\u90e8\u566a\u58f0\uff08\u63a5\u6536\u673a\u81ea\u8eab\u4ea7\u751f\uff09\n<ul class=\"wp-block-list\">\n<li>\u70ed\u566a\u58f0\uff08\u7ea6\u7ff0\u900a\u566a\u58f0\uff09\uff1a\u6240\u6709\u7535\u963b\u5143\u4ef6\uff08\u5982\u5929\u7ebf\u5339\u914d\u7535\u963b\u3001\u653e\u5927\u5668\u8f93\u5165\u7535\u963b\u3001\u4e2d\u9891\u6ee4\u6ce2\u5668\u7b49\uff09\u56e0\u7535\u5b50\u70ed\u8fd0\u52a8\uff08\u6e29\u5ea6\u9ad8\u4e8e\u7edd\u5bf9\u96f6\u5ea6\uff09\u4f1a\u4ea7\u751f\u968f\u673a\u7535\u538b\u6ce2\u52a8\uff0c\u79f0\u4e3a\u70ed\u566a\u58f0\u3002\u5176\u529f\u7387\u8c31\u5bc6\u5ea6\u4e0e\u6e29\u5ea6\u548c\u5e26\u5bbd\u6210\u6b63\u6bd4\uff08\u516c\u5f0f\uff1a V_n^2 = 4kTRB \uff0c\u5176\u4e2d k \u4e3a\u73bb\u5c14\u5179\u66fc\u5e38\u6570\uff0c T \u4e3a\u6e29\u5ea6\uff0c R \u4e3a\u7535\u963b\uff0c B \u4e3a\u5e26\u5bbd\uff09\u3002\u70ed\u566a\u58f0\u662f\u63a5\u6536\u673a\u5185\u90e8\u6700\u4e3b\u8981\u7684\u566a\u58f0\u6e90\uff0c\u5c24\u5176\u5728\u4f4e\u9891\u6bb5\uff08\u5982FM\u768488-108MHz\uff09\u5360\u4e3b\u5bfc\u5730\u4f4d\u3002<\/li>\n\n\n\n<li>\u6563\u7c92\u566a\u58f0\uff1a\u7531\u534a\u5bfc\u4f53\u5668\u4ef6\uff08\u5982\u6676\u4f53\u7ba1\u3001\u4e8c\u6781\u7ba1\uff09\u4e2d\u8f7d\u6d41\u5b50\uff08\u7535\u5b50\/\u7a7a\u7a74\uff09\u968f\u673a\u6e21\u8d8aPN\u7ed3\u5f15\u8d77\u7684\u566a\u58f0\uff0c\u5e38\u89c1\u4e8e\u6709\u6e90\u5668\u4ef6\uff08\u5982\u4f4e\u566a\u58f0\u653e\u5927\u5668LNA\u3001\u6df7\u9891\u5668\uff09\u3002\u5176\u5f3a\u5ea6\u4e0e\u5668\u4ef6\u5de5\u4f5c\u7535\u6d41\u76f8\u5173\uff0c\u901a\u5e38\u5c0f\u4e8e\u70ed\u566a\u58f0\uff0c\u4f46\u5728\u9ad8\u589e\u76ca\u7ea7\u4e2d\u4e0d\u53ef\u5ffd\u7565\u3002<\/li>\n\n\n\n<li>\u95ea\u70c1\u566a\u58f0\uff081\/f\u566a\u58f0\uff09\uff1a\u591a\u53d1\u751f\u5728\u534a\u5bfc\u4f53\u5668\u4ef6\u4f4e\u9891\u533a\uff08\u5982\u97f3\u9891\u653e\u5927\u7ea7\uff09\uff0c\u566a\u58f0\u529f\u7387\u968f\u9891\u7387\u5347\u9ad8\u800c\u964d\u4f4e\uff08\u4e0e f^{-1} \u76f8\u5173\uff09\u3002FM\u63a5\u6536\u673a\u7684\u4e2d\u9891\uff08\u598210.7MHz\uff09\u548c\u9ad8\u9891\u6bb5\u53d7\u6b64\u5f71\u54cd\u8f83\u5c0f\uff0c\u4f46\u5728\u97f3\u9891\u8f93\u51fa\u7aef\u53ef\u80fd\u53e0\u52a0\u4e3a\u201c\u55e1\u55e1\u201d\u58f0\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5916\u90e8\u566a\u58f0\uff08\u7a7a\u95f4\u7535\u78c1\u8f90\u5c04\uff09\n<ul class=\"wp-block-list\">\n<li>\u5927\u6c14\u566a\u58f0\uff1a\u81ea\u7136\u754c\u96f7\u7535\u6d3b\u52a8\u3001\u7535\u79bb\u5c42\u6270\u52a8\u7b49\u4f1a\u4ea7\u751f\u5bbd\u9891\u7535\u78c1\u8f90\u5c04\uff08\u4e3b\u8981\u96c6\u4e2d\u572810kHz-1GHz\uff09\uff0c\u5176\u4e2dFM\u9891\u6bb5\uff0888-108MHz\uff09\u53ef\u80fd\u8026\u5408\u90e8\u5206\u5927\u6c14\u566a\u58f0\uff0c\u8868\u73b0\u4e3a\u968f\u65f6\u95f4\u53d8\u5316\u7684\u201c\u567c\u556a\u58f0\u201d\u3002<\/li>\n\n\n\n<li>\u5b87\u5b99\u566a\u58f0\uff1a\u94f6\u6cb3\u7cfb\u5c04\u7535\u6e90\uff08\u5982\u8109\u51b2\u661f\u3001\u8d85\u65b0\u661f\u9057\u8ff9\uff09\u8f90\u5c04\u7684\u7535\u78c1\u6ce2\u5728FM\u9891\u6bb5\u8f83\u5f31\uff0c\u4f46\u5728\u9ad8\u7eac\u5ea6\u5730\u533a\u6216\u65e0\u4eba\u5de5\u5e72\u6270\u7684\u73af\u5883\u4e2d\u53ef\u80fd\u6210\u4e3a\u6b21\u8981\u566a\u58f0\u6e90\u3002<\/li>\n\n\n\n<li>\u4eba\u4e3a\u5e72\u6270\uff1a\u5de5\u4e1a\u8bbe\u5907\uff08\u5982\u7535\u673a\u3001\u53d8\u9891\u5668\uff09\u3001\u901a\u4fe1\u7cfb\u7edf\uff08\u5982\u624b\u673a\u57fa\u7ad9\u3001Wi-Fi\uff09\u3001\u5bb6\u7528\u7535\u5668\uff08\u5982\u5fae\u6ce2\u7089\u3001\u8367\u5149\u706f\uff09\u7b49\u4ea7\u751f\u7684\u7535\u78c1\u8f90\u5c04\uff0c\u901a\u8fc7\u5929\u7ebf\u6216\u63a5\u6536\u673a\u7535\u8def\u8026\u5408\u8fdb\u5165\u7cfb\u7edf\uff0c\u8868\u73b0\u4e3a\u6301\u7eed\u6216\u95f4\u6b47\u6027\u7684\u201c\u6c99\u6c99\u58f0\u201d\u6216\u201c\u8702\u9e23\u58f0\u201d\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u8c03\u9891\u89e3\u8c03\u540e\u566a\u58f0\u7684\u201c\u6c99\u6c99\u201d\u7279\u6027<\/h4>\n\n\n\n<p>\u8c03\u9891\uff08FM\uff09\u7684\u89e3\u8c03\u8fc7\u7a0b\u4f1a\u5c06\u8f93\u5165\u566a\u58f0\u8f6c\u6362\u4e3a\u97f3\u9891\u566a\u58f0\uff0c\u5176\u7279\u6027\u4e0e\u8c03\u9891\u7684\u5e26\u5bbd\u548c\u89e3\u8c03\u65b9\u5f0f\u5bc6\u5207\u76f8\u5173<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u566a\u58f0\u5e26\u5bbd\u4e0e\u529f\u7387\uff1a\u8c03\u9891\u4fe1\u53f7\u7684\u5e26\u5bbd\u8f83\u5bbd\uff08\u7ea6200kHz\uff09\uff0c\u63a5\u6536\u673a\u7684\u4e2d\u9891\u6ee4\u6ce2\u5668\uff08\u598210.7MHz\u7a84\u5e26\u6ee4\u6ce2\u5668\uff09\u867d\u4f1a\u9650\u5236\u5e26\u5bbd\uff0c\u4f46\u4ecd\u8fdc\u5927\u4e8eAM\uff08\u7ea610kHz\uff09\u3002\u6839\u636e\u566a\u58f0\u529f\u7387\u516c\u5f0f P_n = kTB \uff0c\u5e26\u5bbd B \u8d8a\u5927\uff0c\u566a\u58f0\u529f\u7387\u8d8a\u9ad8\u3002\u56e0\u6b64\uff0cFM\u63a5\u6536\u673a\u7684\u672c\u5e95\u566a\u58f0\u529f\u7387\u663e\u8457\u9ad8\u4e8eAM\uff0c\u8868\u73b0\u4e3a\u66f4\u660e\u663e\u7684\u201c\u6c99\u6c99\u58f0\u201d\u3002<\/li>\n\n\n\n<li>\u9650\u5e45\u5668\u4e0e\u9274\u9891\u5668\u7684\u5f71\u54cd\uff1aFM\u63a5\u6536\u673a\u901a\u5e38\u5305\u542b\u9650\u5e45\u5668\uff08\u6d88\u9664\u5e45\u5ea6\u566a\u58f0\uff09\u548c\u9274\u9891\u5668\uff08\u5c06\u9891\u7387\u504f\u79fb\u8f6c\u6362\u4e3a\u97f3\u9891\u7535\u538b\uff09\u3002\u65e0\u4fe1\u53f7\u65f6\uff0c\u8f93\u5165\u566a\u58f0\u7684\u9891\u7387\u504f\u79fb\u88ab\u9650\u5e45\u5668\u6291\u5236\uff0c\u4f46\u5269\u4f59\u7684\u76f8\u4f4d\u566a\u58f0\u7ecf\u9274\u9891\u540e\u4f1a\u8f6c\u6362\u4e3a\u97f3\u9891\u566a\u58f0\u3002\u7531\u4e8eFM\u5bf9\u76f8\u4f4d\u566a\u58f0\u654f\u611f\uff0c\u8fd9\u90e8\u5206\u566a\u58f0\u4f1a\u88ab\u8fdb\u4e00\u6b65\u653e\u5927\uff0c\u5f62\u6210\u8fde\u7eed\u7684\u6c99\u6c99\u58f0\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u566a\u58f0\u5f3a\u5ea6\u7684\u5f71\u54cd\u56e0\u7d20<\/h4>\n\n\n\n<p>\u672c\u5e95\u566a\u58f0\u7684\u5927\u5c0f\u53ef\u901a\u8fc7\u566a\u58f0\u7cfb\u6570\uff08NF\uff09\u91cf\u5316\uff0c\u5b9a\u4e49\u4e3a\u63a5\u6536\u673a\u8f93\u5165\u4fe1\u566a\u6bd4\u4e0e\u8f93\u51fa\u4fe1\u566a\u6bd4\u7684\u6bd4\u503c\uff08\u5355\u4f4d\uff1adB\uff09\u3002\u566a\u58f0\u7cfb\u6570\u8d8a\u5c0f\uff0c\u63a5\u6536\u673a\u81ea\u8eab\u5f15\u5165\u7684\u566a\u58f0\u8d8a\u5c11\u3002\u5177\u4f53\u5f71\u54cd\u56e0\u7d20\u5305\u62ec\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u673a\u8bbe\u8ba1\uff1a\u4f4e\u566a\u58f0\u653e\u5927\u5668\uff08LNA\uff09\u7684\u4f7f\u7528\u53ef\u964d\u4f4e\u524d\u7aef\u70ed\u566a\u58f0\uff1b\u9ad8\u9009\u62e9\u6027\u6ee4\u6ce2\u5668\uff08\u5982\u58f0\u8868\u9762\u6ce2\u6ee4\u6ce2\u5668SAW\uff09\u53ef\u51cf\u5c11\u5e26\u5916\u5e72\u6270\uff1b\u4f18\u8d28\u7535\u6e90\uff08\u4f4e\u7eb9\u6ce2\uff09\u53ef\u6291\u5236\u7535\u6e90\u566a\u58f0\u8026\u5408\u3002<\/li>\n\n\n\n<li>\u73af\u5883\u6761\u4ef6\uff1a\u57ce\u5e02\u73af\u5883\u4e2d\u4eba\u4e3a\u7535\u78c1\u5e72\u6270\u66f4\u5bc6\u96c6\uff0c\u566a\u58f0\u66f4\u5f3a\uff1b\u504f\u8fdc\u5730\u533a\u6216\u5c71\u533a\u4ee5\u81ea\u7136\u566a\u58f0\u4e3a\u4e3b\uff0c\u566a\u58f0\u76f8\u5bf9\u5747\u5300\u3002<\/li>\n\n\n\n<li>\u5929\u7ebf\u7c7b\u578b\uff1a\u5bbd\u5e26\u5929\u7ebf\uff08\u5982\u968f\u673a\u7ebf\u5929\u7ebf\uff09\u6613\u63a5\u6536\u66f4\u591a\u5916\u90e8\u566a\u58f0\uff1b\u5b9a\u5411\u5929\u7ebf\uff08\u5982\u516b\u6728\u5929\u7ebf\uff09\u53ef\u6291\u5236\u975e\u6307\u5411\u65b9\u5411\u7684\u5e72\u6270\uff0c\u964d\u4f4e\u5e95\u566a\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u603b\u7ed3<\/h4>\n\n\n\n<p>\u8c03\u9891\u63a5\u6536\u673a\u65e0\u4fe1\u53f7\u65f6\u7684\u201c\u6c99\u6c99\u58f0\u201d\u662f\u5185\u90e8\u70ed\u566a\u58f0\u3001\u5916\u90e8\u7535\u78c1\u5e72\u6270\u53ca\u8c03\u9891\u89e3\u8c03\u7279\u6027\u5171\u540c\u4f5c\u7528\u7684\u7ed3\u679c\u3002\u5176\u672c\u8d28\u662f\u63a5\u6536\u673a\u65e0\u6cd5\u5b8c\u5168\u6d88\u9664\u7684\u672c\u5e95\u566a\u58f0\uff0c\u53cd\u6620\u4e86\u8bbe\u5907\u7684\u566a\u58f0\u6027\u80fd\u548c\u73af\u5883\u5e72\u6270\u6c34\u5e73\u3002\u901a\u8fc7\u4f18\u5316\u63a5\u6536\u673a\u8bbe\u8ba1\uff08\u5982\u4f4e\u566a\u58f0\u653e\u5927\u3001\u9ad8\u9009\u62e9\u6027\u6ee4\u6ce2\uff09\u6216\u6539\u5584\u63a5\u6536\u73af\u5883\uff08\u5982\u4f7f\u7528\u5b9a\u5411\u5929\u7ebf\u3001\u8fdc\u79bb\u5e72\u6270\u6e90\uff09\uff0c\u53ef\u964d\u4f4e\u4f46\u65e0\u6cd5\u5b8c\u5168\u6d88\u9664\u8fd9\u79cd\u566a\u58f0\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u534f\u8c03FM\u4fe1\u53f7\u7684\u7535\u8def\uff1aFM\u89e3\u8c03\uff08\u9274\u9891\uff09\u7535\u8def<\/h3>\n\n\n\n<p>\u201c\u534f\u8c03FM\u4fe1\u53f7\u201d\u901a\u5e38\u6307\u4ece\u5df2\u8c03\u5236\u7684FM\u4fe1\u53f7\u4e2d\u63d0\u53d6\u539f\u59cb\u97f3\u9891\u4fe1\u606f\u7684\u8fc7\u7a0b\uff0c\u5373FM\u89e3\u8c03\uff08\u9274\u9891\uff09\u3002\u5b9e\u73b0\u8fd9\u4e00\u529f\u80fd\u7684\u7535\u8def\u79f0\u4e3a\u9274\u9891\u5668\uff0c\u5e38\u89c1\u7c7b\u578b\u53ca\u539f\u7406\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u659c\u7387\u9274\u9891\u5668\uff08Slope Discriminator\uff09\n<ul class=\"wp-block-list\">\n<li>\u539f\u7406\uff1a\u5229\u7528\u8c10\u632f\u56de\u8def\uff08\u5982LC\u5e76\u8054\u8c10\u632f\u5668\uff09\u7684\u5e45\u9891\u7279\u6027\u659c\u7387\u5c06\u9891\u7387\u53d8\u5316\u8f6c\u6362\u4e3a\u5e45\u5ea6\u53d8\u5316\u3002FM\u4fe1\u53f7\u7684\u9891\u7387\u504f\u79fb\u4f1a\u5bfc\u81f4\u5176\u5e45\u5ea6\u968f\u8c10\u632f\u66f2\u7ebf\u7684\u659c\u7387\u53d8\u5316\uff0c\u518d\u901a\u8fc7\u5305\u7edc\u68c0\u6ce2\u5668\uff08\u5982\u4e8c\u6781\u7ba1\u68c0\u6ce2\uff09\u63d0\u53d6\u5e45\u5ea6\u53d8\u5316\uff0c\u8fd8\u539f\u539f\u59cb\u97f3\u9891\u3002<\/li>\n\n\n\n<li>\u7f3a\u70b9\uff1a\u8c10\u632f\u66f2\u7ebf\u659c\u7387\u8f83\u7f13\uff0c\u9274\u9891\u7075\u654f\u5ea6\u4f4e\uff0c\u6613\u53d7\u566a\u58f0\u5f71\u54cd\uff0c\u73b0\u5df2\u8f83\u5c11\u4f7f\u7528\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u76f8\u4f4d\u9274\u9891\u5668\uff08Phase Discriminator)\n<ul class=\"wp-block-list\">\n<li>\u539f\u7406\uff1a\u901a\u8fc7\u4e24\u4e2a\u8026\u5408\u56de\u8def\uff08\u5982\u521d\u7ea7\u548c\u6b21\u7ea7LC\u56de\u8def\uff09\u5c06FM\u4fe1\u53f7\u7684\u9891\u7387\u53d8\u5316\u8f6c\u6362\u4e3a\u76f8\u4f4d\u5dee\u53d8\u5316\uff0c\u518d\u901a\u8fc7\u9274\u76f8\u5668\uff08\u5982\u4e8c\u6781\u7ba1\u5e73\u8861\u9274\u76f8\u5668\uff09\u5c06\u76f8\u4f4d\u5dee\u8f6c\u6362\u4e3a\u5e45\u5ea6\u53d8\u5316\uff0c\u6700\u7ec8\u89e3\u8c03\u51fa\u97f3\u9891\u3002<\/li>\n\n\n\n<li>\u4f18\u52bf\uff1a\u9274\u9891\u7075\u654f\u5ea6\u66f4\u9ad8\uff0c\u7ebf\u6027\u5ea6\u66f4\u597d\uff0c\u65e9\u671f\u5e7f\u6cdb\u7528\u4e8e\u6536\u97f3\u673a\u548c\u7535\u89c6\u673a\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6b63\u4ea4\u9274\u9891\u5668\uff08Quadrature Discriminator\uff0c\u76f8\u5e72\u9274\u9891\u5668\uff09\n<ul class=\"wp-block-list\">\n<li>\u539f\u7406\uff1a\u5c06FM\u4fe1\u53f7\u5206\u4e3a\u4e24\u8def\u2014\u2014\u4e00\u8def\u76f4\u63a5\u8f93\u5165\uff0c\u53e6\u4e00\u8def\u901a\u8fc790\u00b0\u79fb\u76f8\u7f51\u7edc\uff08\u5982RC\u6216LC\u79fb\u76f8\u5668\uff09\uff0c\u518d\u901a\u8fc7\u4e58\u6cd5\u5668\uff08\u6df7\u9891\u5668\uff09\u76f8\u4e58\u3002\u9891\u7387\u504f\u79fb\u4f1a\u5bfc\u81f4\u4e24\u8def\u4fe1\u53f7\u7684\u76f8\u4f4d\u5dee\u53d8\u5316\uff0c\u4e58\u6cd5\u5668\u8f93\u51fa\u4e0e\u76f8\u4f4d\u5dee\u6210\u6b63\u6bd4\u7684\u7535\u538b\uff0c\u7ecf\u4f4e\u901a\u6ee4\u6ce2\u540e\u8fd8\u539f\u97f3\u9891\u3002<\/li>\n\n\n\n<li>\u4f18\u52bf\uff1a\u9891\u54cd\u5bbd\u3001\u5931\u771f\u5c0f\uff0c\u662f\u73b0\u4ee3FM\u63a5\u6536\u673a\uff08\u5982\u5bf9\u8bb2\u673a\u3001\u8f66\u8f7d\u97f3\u54cd\uff09\u7684\u4e3b\u6d41\u65b9\u6848\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6570\u5b57\u9274\u9891\u5668\uff08\u57fa\u4e8eDSP\uff09\n<ul class=\"wp-block-list\">\n<li>\u539f\u7406\uff1a\u901a\u8fc7\u6a21\u6570\u8f6c\u6362\u5668\uff08ADC\uff09\u5c06FM\u4fe1\u53f7\u6570\u5b57\u5316\uff0c\u5229\u7528\u6570\u5b57\u4fe1\u53f7\u5904\u7406\uff08DSP\uff09\u7b97\u6cd5\uff08\u5982\u8fc7\u96f6\u68c0\u6d4b\u3001\u5085\u91cc\u53f6\u53d8\u6362\uff09\u8ba1\u7b97\u9891\u7387\u53d8\u5316\uff0c\u518d\u8fd8\u539f\u97f3\u9891\u3002<\/li>\n\n\n\n<li>\u4f18\u52bf\uff1a\u6297\u5e72\u6270\u80fd\u529b\u5f3a\uff0c\u53ef\u901a\u8fc7\u8f6f\u4ef6\u7075\u6d3b\u8c03\u6574\u53c2\u6570\uff0c\u5e38\u89c1\u4e8e\u6570\u5b57\u5bf9\u8bb2\u673a\u548c\u8f6f\u4ef6\u65e0\u7ebf\u7535\uff08SDR\uff09\u8bbe\u5907\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u68c0\u6ce2\u5668\u89e3\u8c03AM\u4fe1\u53f7<\/h3>\n\n\n\n<p>\u68c0\u6ce2\u5668\u80fd\u591f\u89e3\u8c03AM\uff08\u5e45\u5ea6\u8c03\u5236\uff09\u4fe1\u53f7\u7684\u6838\u5fc3\u539f\u56e0\u5728\u4e8e\uff0cAM\u4fe1\u53f7\u7684\u5e45\u5ea6\u53d8\u5316\u76f4\u63a5\u627f\u8f7d\u4e86\u539f\u59cb\u8c03\u5236\u4fe1\u606f\uff08\u5982\u97f3\u9891\uff09\uff0c\u800c\u68c0\u6ce2\u5668\u7684\u8bbe\u8ba1\u6070\u597d\u80fd\u63d0\u53d6\u8fd9\u79cd\u5e45\u5ea6\u53d8\u5316\u7684\u201c\u5305\u7edc\u201d\uff0c\u4ece\u800c\u8fd8\u539f\u51fa\u539f\u59cb\u4fe1\u53f7\u3002\u4ee5\u4e0b\u4eceAM\u4fe1\u53f7\u7684\u7279\u6027\u3001\u68c0\u6ce2\u5668\u7684\u5de5\u4f5c\u539f\u7406\u53ca\u5173\u952e\u673a\u5236\u5c55\u5f00\u8bf4\u660e\uff1a<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">AM\u4fe1\u53f7\u7684\u672c\u8d28\uff1a\u5e45\u5ea6\u8c03\u5236\u4e0e\u5305\u7edc<\/h4>\n\n\n\n<p>AM\uff08Amplitude Modulation\uff09\u662f\u5e45\u5ea6\u8c03\u5236\uff0c\u5176\u539f\u7406\u662f\u7528\u4f4e\u9891\u8c03\u5236\u4fe1\u53f7\uff08\u5982\u97f3\u9891\uff0c\u9891\u7387\u8303\u56f420Hz~20kHz\uff09\u53bb\u63a7\u5236\u9ad8\u9891\u8f7d\u6ce2\uff08\u5982\u4e2d\u6ce2\u5e7f\u64ad\u7684535~1605kHz\uff09\u7684\u5e45\u5ea6\u3002\u6570\u5b66\u4e0a\uff0cAM\u4fe1\u53f7\u53ef\u8868\u793a\u4e3a\uff1a<strong><em>s(t)=A<sub>c<\/sub>[1+k<sub>a<\/sub>m(t)]cos(w<sub>c<\/sub>t)<\/em><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5176\u4e2d\uff1aA_c \u662f\u8f7d\u6ce2\u632f\u5e45\uff1b<\/li>\n\n\n\n<li>k_a \u662f\u8c03\u5236\u7cfb\u6570\uff1b<\/li>\n\n\n\n<li>m(t) \u662f\u539f\u59cb\u8c03\u5236\u4fe1\u53f7\uff08\u5982\u97f3\u9891\uff09\uff1b<\/li>\n\n\n\n<li>w<sub>c<\/sub>t\u662f\u8f7d\u6ce2\u89d2\u9891\u7387\u3002<\/li>\n<\/ul>\n\n\n\n<p>AM\u4fe1\u53f7\u7684\u5173\u952e\u7279\u5f81\u662f\u5176\u5305\u7edc\u7ebf\uff08\u5373\u4fe1\u53f7\u5e45\u5ea6\u968f\u65f6\u95f4\u53d8\u5316\u7684\u8f6e\u5ed3\uff09\u4e0e\u539f\u59cb\u8c03\u5236\u4fe1\u53f7 m(t) \u5b8c\u5168\u4e00\u81f4\uff08\u5f53 k_a &lt;= 1 \u65f6\uff0c\u65e0\u8fc7\u8c03\u5236\uff09\u3002\u4f8b\u5982\uff0c\u97f3\u9891\u4fe1\u53f7\u7684\u6b63\u534a\u5468\u4f1a\u4f7f\u8f7d\u6ce2\u632f\u5e45\u589e\u5927\uff0c\u8d1f\u534a\u5468\u5219\u51cf\u5c0f\uff0c\u56e0\u6b64AM\u4fe1\u53f7\u7684\u201c\u5305\u7edc\u201d\u76f4\u63a5\u590d\u5236\u4e86\u97f3\u9891\u6ce2\u5f62\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u68c0\u6ce2\u5668\u7684\u5de5\u4f5c\u539f\u7406\uff1a\u63d0\u53d6\u5305\u7edc<\/h4>\n\n\n\n<p>\u68c0\u6ce2\u5668\uff08Detector\uff09\u7684\u6838\u5fc3\u4efb\u52a1\u662f\u4eceAM\u4fe1\u53f7\u4e2d\u63d0\u53d6\u8fd9\u4e2a\u5305\u7edc\u7ebf\uff08\u5373\u539f\u59cb\u8c03\u5236\u4fe1\u53f7\uff09\u3002\u6700\u5e38\u89c1\u7684\u68c0\u6ce2\u5668\u662f\u5305\u7edc\u68c0\u6ce2\u5668\uff08Envelope Detector\uff09\uff0c\u5176\u5de5\u4f5c\u539f\u7406\u53ef\u5206\u4e3a\u4e24\u6b65\uff1a<\/p>\n\n\n\n<p><strong><em>\u6574\u6d41\uff08\u975e\u7ebf\u6027\u5904\u7406\uff09<\/em><\/strong>:\u5305\u7edc\u68c0\u6ce2\u5668\u901a\u5e38\u7531\u4e8c\u6781\u7ba1\uff08\u59821N60\uff09\u5b9e\u73b0\u3002\u4e8c\u6781\u7ba1\u5177\u6709\u5355\u5411\u5bfc\u7535\u6027\uff0c\u4ec5\u5141\u8bb8AM\u4fe1\u53f7\u7684\u6b63\u534a\u5468\u901a\u8fc7\uff08\u6216\u8d1f\u534a\u5468\uff0c\u53d6\u51b3\u4e8e\u4e8c\u6781\u7ba1\u6781\u6027\uff09\u3002\u6b64\u65f6\uff0c\u8f93\u51fa\u4fe1\u53f7\u53d8\u4e3a\u8109\u52a8\u76f4\u6d41\uff0c\u5176\u5e45\u5ea6\u968fAM\u4fe1\u53f7\u7684\u5305\u7edc\u53d8\u5316\uff0c\u4f46\u4ecd\u4fdd\u7559\u9ad8\u9891\u8f7d\u6ce2\u6210\u5206<strong><em>\u3002\u6ee4\u6ce2\uff08\u5e73\u6ed1\u5305\u7edc\uff09<\/em><\/strong>:\u6574\u6d41\u540e\u7684\u8109\u52a8\u76f4\u6d41\u4fe1\u53f7\u901a\u8fc7\u4e00\u4e2a\u4f4e\u901a\u6ee4\u6ce2\u5668\uff08\u5982\u7535\u963b-\u7535\u5bb9\uff08RC\uff09\u7f51\u7edc\uff09\u3002\u4f4e\u901a\u6ee4\u6ce2\u5668\u7684\u4f5c\u7528\u662f\u6ee4\u9664\u9ad8\u9891\u8f7d\u6ce2\u6210\u5206\uff08\u5982\u4e2d\u6ce2\u8f7d\u6ce2\u7684535kHz\uff09\uff0c\u4ec5\u4fdd\u7559\u7f13\u6162\u53d8\u5316\u7684\u5305\u7edc\uff08\u5373\u539f\u59cb\u97f3\u9891\u7684\u4f4e\u9891\u6210\u5206\uff09\u3002\u6700\u7ec8\u8f93\u51fa\u7684\u5373\u4e3a\u8fd8\u539f\u7684\u97f3\u9891\u4fe1\u53f7\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u5305\u7edc\u68c0\u6ce2\u5668\u80fd\u7cbe\u51c6\u63d0\u53d6AM\u4fe1\u53f7\uff1f<\/h4>\n\n\n\n<p>AM\u4fe1\u53f7\u7684\u5305\u7edc\u4e0e\u539f\u59cb\u8c03\u5236\u4fe1\u53f7\u4e25\u683c\u540c\u6b65\uff08\u65e0\u8fc7\u8c03\u5236\u65f6\uff09\uff0c\u8fd9\u662f\u5305\u7edc\u68c0\u6ce2\u5668\u6709\u6548\u7684\u524d\u63d0\u3002\u5177\u4f53\u673a\u5236\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5e45\u5ea6\u8c03\u5236\u7684\u4fe1\u606f\u8f7d\u4f53\uff1aAM\u7684\u8bbe\u8ba1\u672c\u8d28\u662f\u5c06\u4fe1\u606f\u201c\u523b\u201d\u5728\u8f7d\u6ce2\u7684\u5e45\u5ea6\u4e0a\uff0c\u56e0\u6b64\u89e3\u8c03\u65f6\u53ea\u9700\u8ddf\u8e2a\u5e45\u5ea6\u53d8\u5316\u5373\u53ef\u3002\u5305\u7edc\u68c0\u6ce2\u5668\u76f4\u63a5\u63d0\u53d6\u5e45\u5ea6\u53d8\u5316\u7684\u8f6e\u5ed3\uff0c\u65e0\u9700\u5904\u7406\u590d\u6742\u7684\u9891\u7387\u6216\u76f8\u4f4d\u53d8\u5316\u3002<\/li>\n\n\n\n<li>\u4e8c\u6781\u7ba1\u7684\u6574\u6d41\u7279\u6027\uff1a\u4e8c\u6781\u7ba1\u5bf9AM\u4fe1\u53f7\u7684\u6b63\u5411\u5bfc\u901a\uff08\u6216\u53cd\u5411\u622a\u6b62\uff09\u76f8\u5f53\u4e8e\u201c\u8ddf\u968f\u201d\u8f7d\u6ce2\u7684\u5e45\u5ea6\u53d8\u5316\uff0c\u5c06\u9ad8\u9891\u632f\u8361\u8f6c\u6362\u4e3a\u8109\u52a8\u7684\u76f4\u6d41\uff0c\u5176\u5cf0\u503c\u59cb\u7ec8\u8ddf\u968fAM\u4fe1\u53f7\u7684\u5305\u7edc\u3002<\/li>\n\n\n\n<li>\u4f4e\u901a\u6ee4\u6ce2\u7684\u5e73\u6ed1\u4f5c\u7528\uff1aRC\u7f51\u7edc\u7684\u622a\u6b62\u9891\u7387\u8fdc\u4f4e\u4e8e\u8f7d\u6ce2\u9891\u7387\uff08\u5982\u8bbe\u7f6e\u4e3a20kHz\uff0c\u5339\u914d\u97f3\u9891\u4e0a\u9650\uff09\uff0c\u56e0\u6b64\u80fd\u9ad8\u6548\u6ee4\u9664\u9ad8\u9891\u8f7d\u6ce2\uff0c\u4ec5\u4fdd\u7559\u5305\u7edc\u7684\u4f4e\u9891\u6210\u5206\uff08\u5373\u539f\u59cb\u97f3\u9891\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">\u5bf9\u6bd4\uff1a\u4e3a\u4f55\u5305\u7edc\u68c0\u6ce2\u5668\u4e0d\u9002\u7528\u4e8eFM\uff1f<\/h4>\n\n\n\n<p>FM\uff08\u9891\u7387\u8c03\u5236\uff09\u7684\u4fe1\u606f\u627f\u8f7d\u4e8e\u8f7d\u6ce2\u7684\u9891\u7387\u53d8\u5316\uff0c\u800c\u975e\u5e45\u5ea6\u53d8\u5316\u3002\u6b64\u65f6\uff0cAM\u68c0\u6ce2\u5668\uff08\u5305\u7edc\u68c0\u6ce2\u5668\uff09\u65e0\u6cd5\u63d0\u53d6\u6709\u6548\u4fe1\u606f\uff0c\u56e0\u4e3aFM\u4fe1\u53f7\u7684\u5e45\u5ea6\u662f\u6052\u5b9a\u7684\uff08\u7406\u60f3\u60c5\u51b5\u4e0b\uff09\uff0c\u5176\u5305\u7edc\u662f\u4e00\u6761\u76f4\u7ebf\uff0c\u68c0\u6ce2\u5668\u8f93\u51fa\u4e3a\u76f4\u6d41\uff0c\u65e0\u6cd5\u8fd8\u539f\u97f3\u9891\u3002\u56e0\u6b64\uff0cFM\u5fc5\u987b\u4f7f\u7528\u9274\u9891\u5668\uff08\u68c0\u6d4b\u9891\u7387\u53d8\u5316\uff09\u800c\u975e\u68c0\u6ce2\u5668\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u603b\u7ed3<\/h4>\n\n\n\n<p>\u68c0\u6ce2\u5668\u80fd\u89e3\u8c03AM\u4fe1\u53f7\u7684\u6839\u672c\u539f\u56e0\u662f\uff1aAM\u4fe1\u53f7\u7684\u5e45\u5ea6\u53d8\u5316\uff08\u5305\u7edc\uff09\u76f4\u63a5\u5bf9\u5e94\u539f\u59cb\u8c03\u5236\u4fe1\u606f\uff0c\u800c\u5305\u7edc\u68c0\u6ce2\u5668\u901a\u8fc7\u4e8c\u6781\u7ba1\u6574\u6d41\u548c\u4f4e\u901a\u6ee4\u6ce2\uff0c\u7cbe\u51c6\u63d0\u53d6\u4e86\u8fd9\u4e00\u5305\u7edc\uff0c\u4ece\u800c\u8fd8\u539f\u51fa\u539f\u59cb\u4fe1\u53f7\u3002\u8fd9\u4e00\u8fc7\u7a0b\u5229\u7528\u4e86AM\u8c03\u5236\u7684\u672c\u8d28\u7279\u6027\uff08\u4fe1\u606f\u5728\u5e45\u5ea6\uff09\u4e0e\u68c0\u6ce2\u5668\u7684\u975e\u7ebf\u6027+\u6ee4\u6ce2\u529f\u80fd\u7684\u9ad8\u5ea6\u5339\u914d<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u68c0\u6ce2\u4e0e\u9274\u9891\u7684\u5b9a\u4e49\u53ca\u533a\u522b<\/h3>\n\n\n\n<p>\u68c0\u6ce2\uff08Detection\uff09:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\uff1a\u4ece\u5df2\u8c03\u5236\u4fe1\u53f7\u4e2d\u63d0\u53d6\u539f\u59cb\u8c03\u5236\u4fe1\u606f\u7684\u8fc7\u7a0b\uff0c\u672c\u8d28\u662f\u89e3\u8c03\u7684\u4e00\u79cd\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\u573a\u666f\uff1a\u4e3b\u8981\u7528\u4e8eAM\u4fe1\u53f7\u89e3\u8c03\u3002AM\u4fe1\u53f7\u7684\u5e45\u5ea6\u53d8\u5316\u76f4\u63a5\u5bf9\u5e94\u539f\u59cb\u4fe1\u606f\uff08\u5982\u97f3\u9891\uff09\uff0c\u56e0\u6b64\u68c0\u6ce2\u5668\uff08\u5982\u4e8c\u6781\u7ba1\u5305\u7edc\u68c0\u6ce2\u5668\uff09\u901a\u8fc7\u63d0\u53d6\u8f7d\u6ce2\u7684\u5305\u7edc\uff08\u5e45\u5ea6\u53d8\u5316\uff09\u8fd8\u539f\u97f3\u9891\u3002<\/li>\n\n\n\n<li>\u5e7f\u4e49\u6269\u5c55\uff1a\u4e5f\u53ef\u6307\u5176\u4ed6\u8c03\u5236\u65b9\u5f0f\u7684\u89e3\u8c03\uff08\u5982FM\u7684\u9274\u9891\u6709\u65f6\u88ab\u5e7f\u4e49\u79f0\u4e3a\u201c\u68c0\u6ce2\u201d\uff09\uff0c\u4f46\u4e25\u683c\u610f\u4e49\u4e0a\u68c0\u6ce2\u7279\u6307\u5e45\u5ea6\u8c03\u5236\u7684\u89e3\u8c03\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u9274\u9891\uff08Frequency Discrimination\uff09:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9a\u4e49\uff1a\u9488\u5bf9FM\u4fe1\u53f7\u7684\u89e3\u8c03\u8fc7\u7a0b\uff0c\u5c06\u8f7d\u6ce2\u7684\u9891\u7387\u53d8\u5316\u8f6c\u6362\u4e3a\u5e45\u5ea6\u53d8\u5316\uff0c\u518d\u901a\u8fc7\u5305\u7edc\u68c0\u6ce2\u8fd8\u539f\u539f\u59cb\u4fe1\u606f\u3002<\/li>\n\n\n\n<li>\u6838\u5fc3\u903b\u8f91\uff1aFM\u4fe1\u53f7\u7684\u9891\u7387\u504f\u79fb\uff08\u0394f\uff09\u5bf9\u5e94\u539f\u59cb\u97f3\u9891\u7684\u5e45\u5ea6\uff08\u5982\u0394f\u8d8a\u5927\uff0c\u97f3\u9891\u97f3\u91cf\u8d8a\u9ad8\uff09\u3002\u9274\u9891\u5668\u901a\u8fc7\u68c0\u6d4b\u9891\u7387\u53d8\u5316\uff08\u5982\u5229\u7528\u76f8\u4f4d\u5dee\u3001\u8c10\u632f\u659c\u7387\u6216\u6570\u5b57\u7b97\u6cd5\uff09\uff0c\u5c06\u5176\u8f6c\u6362\u4e3a\u5e45\u5ea6\u4fe1\u53f7\uff0c\u6700\u7ec8\u89e3\u8c03\u51fa\u97f3\u9891\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u5173\u952e\u533a\u522b:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u7ef4\u5ea6<\/th><th>\u68c0\u6ce2\uff08AM\uff09<\/th><th>\u9274\u9891\uff08FM\uff09<\/th><\/tr><\/thead><tbody><tr><td>\u8c03\u5236\u5bf9\u8c61<\/td><td>\u5e45\u5ea6\uff08AM\uff09<\/td><td>\u9891\u7387\uff08FM\uff09<\/td><\/tr><tr><td>\u89e3\u8c03\u76ee\u6807<\/td><td>\u63d0\u53d6\u5e45\u5ea6\u53d8\u5316\uff08\u5305\u7edc\uff09<\/td><td>\u63d0\u53d6\u9891\u7387\u53d8\u5316\u5e76\u8f6c\u6362\u4e3a\u5e45\u5ea6<\/td><\/tr><tr><td>\u5178\u578b\u7535\u8def<\/td><td>\u4e8c\u6781\u7ba1\u5305\u7edc\u68c0\u6ce2\u5668\u3001\u540c\u6b65\u68c0\u6ce2\u5668<\/td><td>\u659c\u7387\u9274\u9891\u5668\u3001\u76f8\u4f4d\u9274\u9891\u5668\u3001\u6b63\u4ea4\u9274\u9891\u5668<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u603b\u7ed3:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>FM\u89e3\u8c03\u7535\u8def\uff1a\u901a\u8fc7\u9274\u9891\u5668\uff08\u5982\u6b63\u4ea4\u9274\u9891\u5668\uff09\u5c06\u9891\u7387\u53d8\u5316\u8f6c\u6362\u4e3a\u97f3\u9891\u4fe1\u53f7\u3002<\/li>\n\n\n\n<li>\u9650\u5e45\u5668\u6291\u5236AM\uff1a\u6d88\u9664\u5e45\u5ea6\u6ce2\u52a8\uff0c\u4fdd\u7559FM\u7684\u9891\u7387\u8c03\u5236\u6210\u5206\u3002<\/li>\n\n\n\n<li>\u68c0\u6ce2vs\u9274\u9891\uff1a\u68c0\u6ce2\u662f\u5e7f\u4e49\u89e3\u8c03\uff0c\u7279\u6307AM\u7684\u5e45\u5ea6\u89e3\u8c03\uff1b\u9274\u9891\u662fFM\u7279\u6709\u7684\u9891\u7387\u89e3\u8c03\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6536\u53d1\u4fe1\u673aAGC\u529f\u80fd\u8be6\u89e3<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">AGC\u7684\u6838\u5fc3\u529f\u80fd\u4e0e\u4f5c\u7528<\/h3>\n\n\n\n<p>AGC\uff08Automatic Gain Control\uff0c\u81ea\u52a8\u589e\u76ca\u63a7\u5236\uff09\u662f\u6536\u53d1\u4fe1\u673a\u4e2d\u7528\u4e8e\u52a8\u6001\u8c03\u8282\u63a5\u6536\u94fe\u8def\u589e\u76ca\u7684\u5173\u952e\u6280\u672f\uff0c\u5176\u6838\u5fc3\u76ee\u6807\u662f\u5728\u8f93\u5165\u4fe1\u53f7\u5f3a\u5ea6\u5267\u70c8\u6ce2\u52a8\u65f6\uff0c\u4fdd\u6301\u8f93\u51fa\u4fe1\u53f7\u5e45\u5ea6\u7684\u7a33\u5b9a\u3002\u5177\u4f53\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6291\u5236\u4fe1\u53f7\u8fc7\u8f7d\uff1a\u5f53\u8f93\u5165\u4fe1\u53f7\u8fc7\u5f3a\u65f6\uff08\u5982\u8fd1\u8ddd\u79bb\u57fa\u7ad9\u4fe1\u53f7\uff09\uff0c\u9632\u6b62\u524d\u7aef\u653e\u5927\u5668\uff08LNA\uff09\u9971\u548c\u5931\u771f\u3002<\/li>\n\n\n\n<li>\u63d0\u5347\u5f31\u4fe1\u53f7\u63a5\u6536\uff1a\u5728\u4fe1\u53f7\u5fae\u5f31\u65f6\uff08\u5982\u8fdc\u8ddd\u79bb\u901a\u4fe1\uff09\uff0c\u81ea\u52a8\u589e\u5927\u589e\u76ca\u4ee5\u8865\u507f\u566a\u58f0\uff0c\u907f\u514d\u4fe1\u53f7\u88ab\u6df9\u6ca1\u3002<\/li>\n\n\n\n<li>\u52a8\u6001\u8303\u56f4\u6269\u5c55\uff1a\u901a\u8fc7\u589e\u76ca\u8c03\u8282\uff0c\u5c06\u63a5\u6536\u673a\u52a8\u6001\u8303\u56f4\u4ece\u5355\u7ea7\u653e\u5927\u5668\u7684\u6709\u9650\u8303\u56f4\uff08\u598240dB\uff09\u6269\u5c55\u81f3\u767edB\u7ea7\uff08\u5982AD936x\u82af\u7247\u652f\u630190dB\u52a8\u6001\u8303\u56f4\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">AGC\u7cfb\u7edf\u7ec4\u6210\u4e0e\u5de5\u4f5c\u539f\u7406<\/h3>\n\n\n\n<p>AGC\u7cfb\u7edf\u7531\u68c0\u6d4b\u6a21\u5757\u3001\u63a7\u5236\u73af\u8def\u3001\u589e\u76ca\u8c03\u8282\u6a21\u5757\u4e09\u90e8\u5206\u6784\u6210\uff0c\u5178\u578b\u67b6\u6784\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u68c0\u6d4b\u6a21\u5757\n<ul class=\"wp-block-list\">\n<li>\u68c0\u6ce2\u5668\uff1a\u5c06\u5c04\u9891\u4fe1\u53f7\u8f6c\u6362\u4e3a\u76f4\u6d41\u6216\u4f4e\u9891\u4fe1\u53f7\uff0c\u5e38\u7528\u7c7b\u578b\u5305\u62ec\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5305\u7edc\u68c0\u6ce2\u5668\uff08\u9002\u7528\u4e8eAM\u4fe1\u53f7\uff09\uff1a\u901a\u8fc7\u4e8c\u6781\u7ba1\u5cf0\u503c\u68c0\u6d4b\u63d0\u53d6\u5e45\u5ea6\u4fe1\u606f\u3002<\/li>\n\n\n\n<li>\u771f\u6709\u6548\u503c\u68c0\u6ce2\u5668\uff08RMS\uff09\uff1a\u7cbe\u786e\u53cd\u6620\u4fe1\u53f7\u529f\u7387\uff0c\u9002\u7528\u4e8e\u590d\u6742\u8c03\u5236\u4fe1\u53f7\uff08\u5982QAM\uff09<\/li>\n\n\n\n<li>\u9608\u503c\u8bbe\u7f6e\uff1a\u901a\u8fc7\u5bc4\u5b58\u5668\u914d\u7f6e\u8fc7\u8f7d\u9608\u503c\uff08\u5982AD936x\u7684LMT\u8fc7\u8f7d\u68c0\u6d4b\u5668\u5206\u5927\/\u5c0f\u9608\u503c\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u63a7\u5236\u73af\u8def\n<ul class=\"wp-block-list\">\n<li>\u4f4e\u901a\u6ee4\u6ce2\u5668\uff1a\u6d88\u9664\u9ad8\u9891\u566a\u58f0\uff0c\u5e73\u6ed1\u68c0\u6d4b\u4fe1\u53f7\uff08\u5178\u578b\u622a\u6b62\u9891\u73871-100Hz\uff09\u3002<\/li>\n\n\n\n<li>\u8bef\u5dee\u8ba1\u7b97\uff1a\u6bd4\u8f83\u68c0\u6d4b\u4fe1\u53f7\u4e0e\u53c2\u8003\u7535\u5e73\uff08\u59820dBFS\uff09\uff0c\u751f\u6210\u63a7\u5236\u7535\u538b<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u589e\u76ca\u8c03\u8282\u6a21\u5757\n<ul class=\"wp-block-list\">\n<li>\u53ef\u53d8\u589e\u76ca\u653e\u5927\u5668\uff08VGA\uff09\uff1a\u901a\u8fc7\u6a21\u62df\u8870\u51cf\u5668\uff08VVA\uff09\u6216\u6570\u5b57\u589e\u76ca\u6b65\u8fdb\uff08DSA\uff09\u8c03\u8282\u589e\u76ca\u3002<\/li>\n\n\n\n<li>\u6570\u5b57\u63a7\u5236\uff1a\u5728FPGA\u4e2d\u5b9e\u73b0\u589e\u76ca\u8868\uff08Gain Table\uff09\uff0c\u901a\u8fc7SPI\u63a5\u53e3\u8c03\u6574\u589e\u76ca\u7d22\u5f15\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">AGC\u7684\u5173\u952e\u6280\u672f\u53c2\u6570<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u52a8\u6001\u8303\u56f4\n<ul class=\"wp-block-list\">\n<li>\u8f93\u5165\u52a8\u6001\u8303\u56f4\uff1aAGC\u542f\u52a8\u524d\u53ef\u63a5\u6536\u7684\u4fe1\u53f7\u5f3a\u5ea6\u8303\u56f4\uff08\u5982AD936x\u4e3a-63.5dBFS~0dBFS\uff09\u3002<\/li>\n\n\n\n<li>\u8f93\u51fa\u52a8\u6001\u8303\u56f4\uff1a\u8c03\u8282\u540e\u8f93\u51fa\u4fe1\u53f7\u7684\u7a33\u5b9a\u8303\u56f4\uff08\u901a\u5e38\u8981\u6c42\u6ce2\u52a8&lt;\u00b11dB\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u54cd\u5e94\u65f6\u95f4\n<ul class=\"wp-block-list\">\n<li>\u653b\u51fb\u65f6\u95f4\uff08Attack Time\uff09\uff1a\u4ece\u4fe1\u53f7\u8d85\u9608\u503c\u5230\u589e\u76ca\u5f00\u59cb\u4e0b\u964d\u7684\u65f6\u95f4\uff08\u5178\u578b\u503c10-100\u03bcs\uff09\u3002<\/li>\n\n\n\n<li>\u91ca\u653e\u65f6\u95f4\uff08Release Time\uff09\uff1a\u4fe1\u53f7\u56de\u843d\u540e\u589e\u76ca\u6062\u590d\u7684\u65f6\u95f4\uff08\u5178\u578b\u503c100-500\u03bcs\uff09\u3002<\/li>\n\n\n\n<li>\u5ef6\u8fdf\u7b56\u7565\uff1a\u901a\u8fc7\u201c\u589e\u91cf\u65f6\u95f4\u201d\uff08\u5982AD936x\u768420ms\uff09\u907f\u514d\u5f31\u4fe1\u53f7\u8bef\u89e6\u53d1\u589e\u76ca\u8c03\u6574\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u589e\u76ca\u63a7\u5236\u6a21\u5f0f\n<ul class=\"wp-block-list\">\n<li>\u5feb\u901f\u653b\u51fb\uff08Fast Attack\uff09\uff1a\u7528\u4e8e\u7a81\u53d1\u4fe1\u53f7\uff08\u5982TDD\u7cfb\u7edf\uff09\uff0c\u5feb\u901f\u6291\u5236\u77ac\u65f6\u8fc7\u8f7d\u3002<\/li>\n\n\n\n<li>\u6162\u901f\u653b\u51fb\uff08Slow Attack\uff09\uff1a\u9002\u7528\u4e8e\u8fde\u7eed\u4fe1\u53f7\uff08\u5982FDD\u7cfb\u7edf\uff09\uff0c\u5e73\u6ed1\u8c03\u8282\u907f\u514d\u5931\u771f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">AGC\u5728\u6536\u53d1\u4fe1\u673a\u4e2d\u7684\u5178\u578b\u5e94\u7528\u573a\u666f<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u63a5\u6536\u94fe\u8def\u4fdd\u62a4\n<ul class=\"wp-block-list\">\n<li>LNA\u8fc7\u8f7d\u9632\u62a4\uff1a\u5f53\u8f93\u5165\u4fe1\u53f7\u8d85\u8fc7LNA\u7ebf\u6027\u8303\u56f4\u65f6\uff0cAGC\u901a\u8fc7\u964d\u4f4e\u589e\u76ca\u907f\u514d\u6df7\u9891\u5668\/\u6ee4\u6ce2\u5668\u5931\u771f\u3002<\/li>\n\n\n\n<li>ADC\u8f93\u5165\u4fdd\u62a4\uff1a\u9632\u6b62ADC\u56e0\u4fe1\u53f7\u8fc7\u5f3a\u5bfc\u81f4\u91cf\u5316\u6ea2\u51fa\uff08\u5982AD936x\u7684ADC\u8fc7\u8f7d\u68c0\u6d4b\u5668\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4fe1\u566a\u6bd4\u4f18\u5316\n<ul class=\"wp-block-list\">\n<li>\u5f31\u4fe1\u53f7\u589e\u5f3a\uff1a\u5728\u566a\u58f0\u57fa\u5e95\u4e0a\u63d0\u5347\u6709\u6548\u4fe1\u53f7\u5e45\u5ea6\uff0c\u6539\u5584\u8bef\u7801\u7387\uff08BER\uff09\u3002<\/li>\n\n\n\n<li>\u81ea\u52a8\u7075\u654f\u5ea6\u8c03\u6574\uff1a\u6839\u636e\u73af\u5883\u566a\u58f0\u52a8\u6001\u8c03\u8282\u63a5\u6536\u7075\u654f\u5ea6\uff08\u5982\u536b\u661f\u901a\u4fe1\u4e2d\u7684\u96e8\u8870\u8865\u507f\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u591a\u5f84\u8870\u843d\u6291\u5236\n<ul class=\"wp-block-list\">\n<li>\u81ea\u9002\u5e94\u589e\u76ca\u8865\u507f\uff1a\u5728\u79fb\u52a8\u901a\u4fe1\u4e2d\uff0c\u901a\u8fc7\u5feb\u901fAGC\u62b5\u6d88\u591a\u5f84\u6548\u5e94\u5f15\u8d77\u7684\u4fe1\u53f7\u8d77\u4f0f\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">AGC\u8bbe\u8ba1\u6311\u6218\u4e0e\u89e3\u51b3\u65b9\u6848<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u53cd\u8c03\u5236\u95ee\u9898\n<ul class=\"wp-block-list\">\n<li>\u73b0\u8c61\uff1a\u8c03\u5236\u4fe1\u53f7\uff08\u5982AM\uff09\u7684\u5e45\u5ea6\u53d8\u5316\u88abAGC\u8bef\u5224\u4e3a\u5e72\u6270\uff0c\u5bfc\u81f4\u5931\u771f\u3002<\/li>\n\n\n\n<li>\u89e3\u51b3\u65b9\u6848\uff1a\u91c7\u7528\u5ef6\u8fdfAGC\uff08\u5982\u8bbe\u7f6e10dB\u9608\u503c\u6ede\u540e\uff09\uff0c\u5206\u79bb\u6709\u7528\u4fe1\u53f7\u4e0e\u5e72\u6270\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6e29\u5ea6\u6f02\u79fb\n<ul class=\"wp-block-list\">\n<li>\u5f71\u54cd\uff1a\u5668\u4ef6\u53c2\u6570\u968f\u6e29\u5ea6\u53d8\u5316\u5bfc\u81f4\u589e\u76ca\u63a7\u5236\u504f\u5dee\u3002<\/li>\n\n\n\n<li>\u89e3\u51b3\u65b9\u6848\uff1a\u4f7f\u7528\u6e29\u5ea6\u8865\u507f\u7b97\u6cd5\uff08\u5982\u57fa\u4e8eADC RSSI\u7684\u95ed\u73af\u6821\u51c6\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u529f\u8017\u4f18\u5316\n<ul class=\"wp-block-list\">\n<li>\u77db\u76fe\uff1a\u9ad8\u7cbe\u5ea6AGC\u9700\u590d\u6742\u7535\u8def\uff08\u5982\u591a\u7ea7\u6ee4\u6ce2\uff09\uff0c\u589e\u52a0\u529f\u8017\u3002<\/li>\n\n\n\n<li>\u89e3\u51b3\u65b9\u6848\uff1a\u91c7\u7528\u6570\u5b57AGC\uff08\u5982AD936x\u7684FPGA\u63a7\u5236\uff09\uff0c\u964d\u4f4e\u6a21\u62df\u7535\u8def\u590d\u6742\u5ea6\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u5178\u578bAGC\u5b9e\u73b0\u6848\u4f8b\uff08\u4ee5AD936x\u4e3a\u4f8b\uff09<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>. \u786c\u4ef6\u67b6\u6784\n<ul class=\"wp-block-list\">\n<li>LMT\u68c0\u6d4b\u5668\uff1a\u6a21\u62df\u5cf0\u503c\u68c0\u6d4b\u524d\u7aef\u4fe1\u53f7\uff0c\u8bbe\u7f6e\u5927\/\u5c0f\u8fc7\u8f7d\u9608\u503c\uff08\u598216mV~800mV\uff09\u3002<\/li>\n\n\n\n<li>ADC\u8fc7\u8f7d\u68c0\u6d4b\uff1a\u901a\u8fc7\u03a3-\u0394\u8c03\u5236\u5668\u76d1\u6d4b\u6570\u5b57\u57df\u8fc7\u8f7d\uff0c\u89e6\u53d1\u5feb\u901f\u8870\u51cf\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8f6f\u4ef6\u63a7\u5236\n<ul class=\"wp-block-list\">\n<li>\u589e\u76ca\u8868\u6a21\u5f0f\uff1a\u652f\u6301\u5168\u8868\uff08\u5355\u6307\u9488\u63a7\u5236LNA\/VGA\uff09\u4e0e\u5206\u5272\u8868\uff08\u72ec\u7acb\u63a7\u5236LMT\/LPF\uff09\u3002<\/li>\n\n\n\n<li>\u72b6\u6001\u673a\u903b\u8f91\uff1a\u6839\u636e\u8fc7\u8f7d\u6807\u5fd7\u4f4d\u8c03\u6574\u589e\u76ca\u7d22\u5f15\uff0c\u4f18\u5148\u5904\u7406\u5927\u4fe1\u53f7\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">AGC\u6027\u80fd\u8bc4\u4f30\u6307\u6807<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6307\u6807<\/th><th>\u5b9a\u4e49<\/th><th>\u5178\u578b\u503c<\/th><\/tr><\/thead><tbody><tr><td>\u589e\u76ca\u63a7\u5236\u8303\u56f4<\/td><td>\u6700\u5927\u589e\u76ca\u4e0e\u6700\u5c0f\u589e\u76ca\u5dee\u503c<\/td><td>60-90dB<\/td><\/tr><tr><td>\u589e\u76ca\u6b65\u957f\u7cbe\u5ea6<\/td><td>\u5355\u6b65\u589e\u76ca\u8c03\u8282\u8bef\u5dee<\/td><td>\u00b10.5dB<\/td><\/tr><tr><td>\u7a33\u5b9a\u65f6\u95f4<\/td><td>\u4ece\u89e6\u53d1\u5230\u589e\u76ca\u7a33\u5b9a\u6240\u9700\u65f6\u95f4<\/td><td>&lt;100ms<\/td><\/tr><tr><td>\u4fe1\u566a\u6bd4\u6076\u5316<\/td><td>AGC\u5f15\u5165\u7684\u989d\u5916\u566a\u58f0\u529f\u7387<\/td><td>&lt;1dB<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<p>AGC\u662f\u6536\u53d1\u4fe1\u673a\u4e2d\u5b9e\u73b0\u52a8\u6001\u4fe1\u53f7\u5e73\u8861\u7684\u6838\u5fc3\u6280\u672f\uff0c\u901a\u8fc7\u68c0\u6d4b-\u63a7\u5236-\u8c03\u8282\u7684\u95ed\u73af\u673a\u5236\uff0c\u4fdd\u969c\u7cfb\u7edf\u5728\u590d\u6742\u7535\u78c1\u73af\u5883\u4e0b\u7684\u7a33\u5b9a\u8fd0\u884c\u3002\u5176\u8bbe\u8ba1\u9700\u7efc\u5408\u8003\u8651\u52a8\u6001\u8303\u56f4\u3001\u54cd\u5e94\u901f\u5ea6\u3001\u529f\u8017\u53ca\u6297\u5e72\u6270\u80fd\u529b\uff0c\u5e76\u9488\u5bf9\u5177\u4f53\u5e94\u7528\u573a\u666f\uff08\u59825G\u57fa\u7ad9\u3001\u536b\u661f\u901a\u4fe1\uff09\u4f18\u5316\u7b97\u6cd5\u4e0e\u786c\u4ef6\u67b6\u6784\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u8d85\u5916\u5dee\u5f0f\u6536\u4fe1\u673a<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">DC4\u6536\u97f3\u673a\u4e2d\u7684\u201cDC\u201d\u542b\u4e49\uff08MC1-0837\uff09<\/h3>\n\n\n\n<p>\u5728\u6536\u97f3\u673a\u9886\u57df\uff0cDC\u901a\u5e38\u6307\u76f4\u63a5\u53d8\u9891\uff08Direct Conversion\uff09\u6216\u6570\u5b57\u63a7\u5236\uff08Digital Control\uff09\uff0c\u4f46\u7ed3\u5408\u201cDC4\u201d\u8fd9\u4e00\u578b\u53f7\uff0c\u66f4\u53ef\u80fd\u662f\u6307\u76f4\u63a5\u53d8\u9891\u63a5\u6536\u6280\u672f\uff08Direct Conversion Receiver\uff09\u3002\u5176\u6838\u5fc3\u7279\u70b9\u662f\u5c06\u5c04\u9891\u4fe1\u53f7\u76f4\u63a5\u4e0b\u53d8\u9891\u81f3\u57fa\u5e26\uff08\u96f6\u4e2d\u9891\uff09\uff0c\u7701\u53bb\u4f20\u7edf\u8d85\u5916\u5dee\u67b6\u6784\u4e2d\u7684\u4e2d\u9891\u5904\u7406\u73af\u8282\u3002DC4\u53ef\u80fd\u4ee3\u8868\u8be5\u6536\u97f3\u673a\u91c7\u7528\u76f4\u63a5\u53d8\u9891\u6280\u672f\uff0c\u5e76\u5177\u5907\u56db\u7ea7\uff084-stage\uff09\u4fe1\u53f7\u5904\u7406\u94fe\u8def\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6df7\u9891\u5668\u5728\u6536\u53d1\u673a\u4e2d\u7684\u6838\u5fc3\u4f5c\u7528\uff08MC1-0838\uff09<\/h3>\n\n\n\n<p>\u6df7\u9891\u5668\u662f\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u7684\u6838\u5fc3\u5668\u4ef6\uff0c\u4e3b\u8981\u529f\u80fd\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9891\u7387\u8f6c\u6362\uff1a\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u673a\uff1a\u5c06\u9ad8\u9891\u5c04\u9891\u4fe1\u53f7\uff08RF\uff09\u4e0e\u672c\u632f\u4fe1\u53f7\uff08LO\uff09\u4e0b\u53d8\u9891\u4e3a\u8f83\u4f4e\u7684\u4e2d\u9891\u4fe1\u53f7\uff08IF\uff09\uff0c\u4fbf\u4e8e\u540e\u7eed\u653e\u5927\u548c\u89e3\u8c03\uff08\u5982FM\u5e7f\u64ad\u63a5\u6536\u673a\u5c06100MHz\u4fe1\u53f7\u4e0b\u53d8\u9891\u81f310.7MHz\uff09\u3002<\/li>\n\n\n\n<li>\u53d1\u5c04\u673a\uff1a\u5c06\u57fa\u5e26\u4fe1\u53f7\u6216\u4e2d\u9891\u4fe1\u53f7\u4e0e\u672c\u632f\u4fe1\u53f7\u4e0a\u53d8\u9891\u4e3a\u9ad8\u9891\u5c04\u9891\u4fe1\u53f7\uff08\u5982\u5c0610kHz\u57fa\u5e26\u4fe1\u53f7\u4e0a\u53d8\u9891\u81f3900MHz\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u9891\u8c31\u642c\u79fb\uff1a\u901a\u8fc7\u975e\u7ebf\u6027\u6df7\u9891\u5b9e\u73b0\u4fe1\u53f7\u9891\u8c31\u7684\u7ebf\u6027\u5e73\u79fb\uff0c\u4fdd\u6301\u8c03\u5236\u4fe1\u606f\u4e0d\u53d8\u3002<\/li>\n\n\n\n<li>\u6291\u5236\u5e72\u6270\uff1a\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u4e2d\u9891\u9891\u7387\uff0c\u7ed3\u5408\u6ee4\u6ce2\u5668\u6291\u5236\u955c\u50cf\u5e72\u6270\u548c\u90bb\u9053\u5e72\u6270\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u8d85\u5916\u5dee\u5f0f\u6536\u53d1\u673a\u4e2d\u6df7\u9891\u5668\u7684\u4e0a\u53d8\u9891\u4e0e\u4e0b\u53d8\u9891\uff08MC1-0839\uff09<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u4e0b\u53d8\u9891\uff08Downconversion\uff09\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8f93\u5165\uff1a\u5c04\u9891\u4fe1\u53f7\uff08RF\uff09\u4e0e\u672c\u632f\u4fe1\u53f7\uff08LO\uff09\u3002<\/li>\n\n\n\n<li>\u8f93\u51fa\uff1a\u4e2d\u9891\u4fe1\u53f7\uff08IF = |LO &#8211; RF|\uff09\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\uff1a\u63a5\u6536\u673a\u4e2d\u5c06\u9ad8\u9891\u4fe1\u53f7\u964d\u9891\u81f3\u4e2d\u9891\uff08\u5982FM\u6536\u97f3\u673a\u5c0698MHz\u4fe1\u53f7\u4e0b\u53d8\u9891\u81f310.7MHz\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4e0a\u53d8\u9891\uff08Upconversion\uff09\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8f93\u5165\uff1a\u57fa\u5e26\u4fe1\u53f7\u6216\u4e2d\u9891\u4fe1\u53f7\uff08IF\uff09\u4e0e\u672c\u632f\u4fe1\u53f7\uff08LO\uff09\u3002<\/li>\n\n\n\n<li>\u8f93\u51fa\uff1a\u5c04\u9891\u4fe1\u53f7\uff08RF = LO + IF\uff09\u3002<\/li>\n\n\n\n<li>\u5e94\u7528\uff1a\u53d1\u5c04\u673a\u4e2d\u5c06\u57fa\u5e26\u4fe1\u53f7\u5347\u9891\u81f3\u5c04\u9891\uff08\u5982\u5c0610kHz\u8bed\u97f3\u4fe1\u53f7\u4e0a\u53d8\u9891\u81f3900MHz\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e2d\u9891\u6ee4\u6ce2\u5668\u5e26\u5bbd\u63a7\u5236\u4e0e\u5e72\u6270\u6291\u5236\u5206\u7c7b\uff08MC1-0840\uff09<\/h3>\n\n\n\n<p>\u4e2d\u9891\u6ee4\u6ce2\u5668\u901a\u8fc7\u8c03\u8282\u5e26\u5bbd\u6291\u5236\u4ee5\u4e0b\u5e72\u6270\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u955c\u50cf\u5e72\u6270\uff1a\u4e0e\u6709\u7528\u4fe1\u53f7\u5bf9\u79f0\u5206\u5e03\u4e8e\u672c\u632f\u4e24\u4fa7\u7684\u5e72\u6270\uff08\u5982\u672c\u632f\u4e3a100MHz\u65f6\uff0c\u955c\u50cf\u4e3a200MHz\uff09\u3002<\/li>\n\n\n\n<li>\u90bb\u9053\u5e72\u6270\uff1a\u76f8\u90bb\u9891\u6bb5\u7684\u4fe1\u53f7\u6cc4\u6f0f\uff08\u598298.5MHz\u4fe1\u53f7\u5e72\u627098.0MHz\u63a5\u6536\uff09\u3002<\/li>\n\n\n\n<li>\u5e26\u5916\u5e72\u6270\uff1a\u8d85\u51fa\u901a\u5e26\u7684\u9ad8\u9891\u566a\u58f0\uff08\u5982\u5de5\u4e1a\u8bbe\u5907\u8f90\u5c04\u7684\u6742\u6563\u4fe1\u53f7\uff09\u3002\u5206\u7c7b\u4f9d\u636e\uff1a\u5e72\u6270\u9891\u7387\u4e0e\u6709\u7528\u4fe1\u53f7\u7684\u5173\u7cfb\uff08\u955c\u50cf\u5bf9\u79f0\u6027\u3001\u90bb\u9053\u90bb\u8fd1\u6027\u3001\u5e26\u5916\u8303\u56f4\uff09\u3002<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u6291\u5236\u955c\u50cf\u9891\u7387\u5e72\u6270\u7684\u5173\u952e\u90e8\u4ef6(MC1-0841)<\/h3>\n\n\n\n<p>\u955c\u50cf\u6291\u5236\u6ee4\u6ce2\u5668\uff08Image-Rejection Filter, IR Filter\uff09\u662f\u6838\u5fc3\u90e8\u4ef6\uff0c\u5176\u4f5c\u7528\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u786c\u4ef6\u6291\u5236\uff1a\n<ul class=\"wp-block-list\">\n<li>\u53cc\u5e73\u8861\u6df7\u9891\u5668\uff1a\u901a\u8fc7\u6b63\u4ea4\u672c\u632f\u4fe1\u53f7\uff08\u76f8\u5dee90\u00b0\uff09\u62b5\u6d88\u955c\u50cf\u5206\u91cf\uff0c\u5178\u578b\u5e94\u7528\u5982GPS\u63a5\u6536\u673a\u3002<\/li>\n\n\n\n<li>\u9884\u9009\u6ee4\u6ce2\u5668\uff1a\u5728\u6df7\u9891\u524d\u7aef\u8bbe\u7f6e\u5e26\u901a\u6ee4\u6ce2\u5668\uff08\u5982SAW\u6ee4\u6ce2\u5668\uff09\uff0c\u6291\u5236\u5e26\u5916\u955c\u50cf\u4fe1\u53f7\uff08\u5982\u536b\u661f\u901a\u4fe1\u4e2d\u91c7\u75284MHz\u5e26\u5bbd\u6ee4\u6ce2\u5668\u5b9e\u73b047.8dB\u6291\u5236\u6bd4\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8f6f\u4ef6\u6291\u5236\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6570\u5b57\u4e0b\u53d8\u9891\uff08DDC\uff09\uff1a\u901a\u8fc7FPGA\u5b9e\u73b0\u591a\u76f8\u6ee4\u6ce2\u5668\u7ec4\uff0c\u4f18\u5316\u8fc7\u6e21\u5e26\u9661\u5ea6\u3002<\/li>\n\n\n\n<li>\u81ea\u9002\u5e94\u7b97\u6cd5\uff1a\u5b9e\u65f6\u6821\u6b63I\/Q\u652f\u8def\u5931\u914d\uff0c\u63d0\u5347\u955c\u50cf\u6291\u5236\u6bd4\uff08\u5982\u5b9e\u9a8c\u4e2d\u901a\u8fc7\u7b97\u6cd5\u5c06IRR\u63d0\u5347\u81f340dB\u4ee5\u4e0a\uff09<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>DC4\u6536\u97f3\u673a\uff1a\u53ef\u80fd\u6307\u76f4\u63a5\u53d8\u9891\u6280\u672f\uff0c\u7701\u53bb\u4e2d\u9891\u73af\u8282\u3002<\/li>\n\n\n\n<li>\u6df7\u9891\u5668\u4f5c\u7528\uff1a\u9891\u7387\u8f6c\u6362\u4e0e\u9891\u8c31\u642c\u79fb\uff0c\u652f\u6491\u63a5\u6536\/\u53d1\u5c04\u94fe\u8def\u6838\u5fc3\u529f\u80fd\u3002<\/li>\n\n\n\n<li>\u4e0a\/\u4e0b\u53d8\u9891\uff1a\u63a5\u6536\u673a\u964d\u9891\u3001\u53d1\u5c04\u673a\u5347\u9891\uff0c\u9002\u5e94\u4e0d\u540c\u9891\u6bb5\u5904\u7406\u9700\u6c42\u3002<\/li>\n\n\n\n<li>\u4e2d\u9891\u6ee4\u6ce2\u5668\uff1a\u901a\u8fc7\u5e26\u5bbd\u8c03\u8282\u6291\u5236\u955c\u50cf\u3001\u90bb\u9053\u53ca\u5e26\u5916\u5e72\u6270\u3002<\/li>\n\n\n\n<li>\u955c\u50cf\u6291\u5236\uff1a\u4f9d\u8d56IR\u6ee4\u6ce2\u5668\u6216\u6b63\u4ea4\u6df7\u9891\u6280\u672f\uff0c\u7ed3\u5408\u786c\u4ef6\u4e0e\u7b97\u6cd5\u4f18\u5316\u5b9e\u73b0\u9ad8\u6548\u5e72\u6270\u6d88\u9664\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u8d85\u5916\u5dee\u63a5\u6536\u673a\u4e2d\u955c\u50cf\u5e72\u6270\u9891\u7387\u7684\u8ba1\u7b97<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e00\u3001\u955c\u50cf\u5e72\u6270\u7684\u6838\u5fc3\u539f\u7406<\/h3>\n\n\n\n<p>\u8d85\u5916\u5dee\u63a5\u6536\u673a\u901a\u8fc7\u6df7\u9891\u5668\u5c06\u5c04\u9891\u4fe1\u53f7\uff08RF\uff09\u4e0b\u53d8\u9891\u4e3a\u4e2d\u9891\u4fe1\u53f7\uff08IF\uff09\uff0c\u516c\u5f0f\u4e3a\uff1a<strong><em>|f<sub>LO<\/sub>-f<sub>RF<\/sub>|=f<sub>IF<\/sub><\/em><\/strong>,\u5176\u4e2d <strong><em>f<sub>LO<\/sub><\/em><\/strong>\u662f\u672c\u632f\u9891\u7387\uff0c <strong><em>f<sub>RF<\/sub><\/em><\/strong> \u662f\u63a5\u6536\u9891\u7387\uff0c<strong><em>f<sub>IF<\/sub><\/em><\/strong> \u662f\u4e2d\u9891\u3002\u50cf\u5e72\u6270\u662f\u6307\uff1a\u5b58\u5728\u53e6\u4e00\u4e2a\u9891\u7387<strong> <em>f<sub>IM<\/sub><\/em><\/strong>\uff0c\u5b83\u4e0e<strong><em>f<sub>LO<\/sub><\/em><\/strong>\u7684\u5173\u7cfb\u6ee1\u8db3 <strong><em>|f<sub>LO<\/sub> &#8211;  f<sub>IM<\/sub>| = f<sub>IF<\/sub> <\/em><\/strong>\uff0c\u56e0\u6b64\u4e5f\u4f1a\u88ab\u6df7\u9891\u5230\u540c\u4e00\u4e2d\u9891 <strong><em>f<sub>IF<\/sub><\/em><\/strong> \uff0c\u5e72\u6270\u63a5\u6536,\u955c\u50cf\u9891\u7387 <strong><em>f<sub>IM<\/sub><\/em><\/strong> \u4e0e\u76ee\u6807\u9891\u7387<strong><em>f<sub>RF<\/sub><\/em><\/strong> \u5173\u4e8e\u672c\u632f\u9891\u7387 <strong><em>f<sub>LO<\/sub><\/em><\/strong> \u5bf9\u79f0\uff0c\u5373\uff1a <strong><em>f<sub>IM<\/sub> = 2f<sub>LO<\/sub>&#8211; f<sub>RF<\/sub><\/em><\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e8c\u3001\u5177\u4f53\u8ba1\u7b97\u6b65\u9aa4<\/h3>\n\n\n\n<p>\u5df2\u77e5 <strong><em>f<sub>RF<\/sub><\/em><\/strong>\u548c <strong><em>f<sub>IF<\/sub><\/em><\/strong> \uff0c\u9700\u5148\u786e\u5b9a <strong><em>f<sub>LO<\/sub><\/em><\/strong>\uff0c\u518d\u8ba1\u7b97 <strong><em>f<sub>IM<\/sub><\/em><\/strong> \u3002\u901a\u5e38\u8d85\u5916\u5dee\u63a5\u6536\u673a\u91c7\u7528 \u4f4e\u4e2d\u9891\u8bbe\u8ba1\uff08<strong><em>f<sub>LO<\/sub><\/em><\/strong>&gt;<strong><em>f<sub>RF<\/sub><\/em><\/strong> \u6216<strong><em>f<sub>LO<\/sub><\/em><\/strong>&lt; <strong><em>f<sub>RF<\/sub><\/em><\/strong>\uff09\uff0c\u8fd9\u91cc\u4ee5 <strong><em>f<sub>LO<\/sub><\/em><\/strong> = <strong><em>f<sub>RF<\/sub><\/em><\/strong> &#8211;<strong><em>f<sub>IF<\/sub><\/em><\/strong> \uff08\u672c\u632f\u4f4e\u4e8e\u63a5\u6536\u9891\u7387\uff09\u4e3a\u4f8b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8ba1\u7b97\u672c\u632f\u9891\u7387\uff1a<strong><em>f<sub>LO<\/sub><\/em><\/strong> = <strong><em>f<sub>RF<\/sub><\/em><\/strong> &#8211; <strong><em>f<sub>IF<\/sub><\/em><\/strong> <\/li>\n\n\n\n<li>\u8ba1\u7b97\u955c\u50cf\u9891\u7387\uff1a <strong><em>f<sub>IM<\/sub><\/em><\/strong> = 2<strong><em>f<sub>LO<\/sub><\/em><\/strong> &#8211;  <strong><em>f<sub>RF<\/sub><\/em><\/strong> = 2(<strong><em>f<sub>RF<\/sub><\/em><\/strong> &#8211;<strong><em>f<sub>IF<\/sub><\/em><\/strong>) &#8211; <strong><em>f<sub>RF<\/sub><\/em><\/strong> = <strong><em>f<sub>RF<\/sub><\/em><\/strong> &#8211; 2<strong><em>f<sub>IF<\/sub><\/em><\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001\u9898\u76ee\u793a\u4f8b\u8ba1\u7b97<\/h3>\n\n\n\n<p>MC1-0842\uff1a\u8d85\u5916\u5dee\u5f0f\u6536\u4fe1\u673a\u6240\u6536\u4fe1\u53f7\u7684\u9891\u7387\u8981\u6bd4\u672c\u632f\u9891\u7387\u4f4e(\u6216\u9ad8)\u4e00\u4e2a\u4e2d\u9891\u3002\u7136\u800c\uff0c\u6bd4\u672c\u632f\u9891\u7387\u9ad8(\u6216\u4f4e)\u4e00\u4e2a\u4e2d\u9891\u7684\u53e6\u4e00\u4e2a\u9065\u76f8\u5bf9\u5e94\u7684\u4fe1\u53f7\u4e5f\u53ef\u80fd\u7ecf\u6df7\u9891\u7a9c\u4eba\u4e2d\u9891\u901a\u9053\uff0c\u5f62\u6210\u201c\u955c\u50cf\u9891\u7387\u5e72\u6270\u201d\u6216\u201c\u955c\u9891\u5e72\u6270\u201d.\u5982\u679c\u67d0\u5bf9\u8bb2\u673a\u7684\u6280\u672f\u89c4\u683c\u4e66\u7ed9\u51fa\u7684VHF \u63a5\u6536\u673a\u7b2c\u4e00\u4e2d\u9891\u4e3a 45.05MHZ\u90a3\u4e48\u5728 145.00MHz \u6536\u5230\u7684\u955c\u9891\u5e72\u6270\u53ef\u80fd\u6765\u81ea:<strong>235.10MHz\u6216 54.90MHZ<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5df2\u77e5\uff1a<strong><em>f<sub>IF<\/sub><\/em><\/strong>  = 45.05MHZ\uff0c <strong><em>f<sub>RF<\/sub><\/em><\/strong>= 145.00MHZ<\/li>\n\n\n\n<li>\u8ba1\u7b97\u672c\u632f\uff1a <strong><em>f<sub>LO<\/sub><\/em><\/strong>  = 145.00 &#8211; 45.05 = 99.95MHz<\/li>\n\n\n\n<li>\u955c\u50cf\u9891\u7387\uff1a <strong><em>f<sub>IM<\/sub><\/em><\/strong>  = 2 x99.95 &#8211; 145.00 = 54.9MHz <\/li>\n\n\n\n<li><strong>\u7ed3\u8bba\uff1a<\/strong>145.00MHz\u63a5\u6536\u65f6\u7684\u955c\u50cf\u5e72\u6270\u6765\u81ea54.9MHz\u3002<\/li>\n<\/ul>\n\n\n\n<p>MC1-0843:\u8d85\u5916\u5dee\u5f0f\u6536\u4fe1\u673a\u6240\u6536\u4fe1\u53f7\u7684\u9891\u7387\u8981\u6bd4\u672c\u632f\u9891\u7387\u4f4e(\u6216\u9ad8)\u4e00\u4e2a\u4e2d\u9891\u3002\u7136\u800c\uff0c\u6bd4\u672c\u632f\u9891\u7387\u9ad8(\u6216\u4f4e)\u4e00\u4e2a\u4e2d\u9891\u7684\u53e6\u4e00\u4e2a\u76f8\u5bf9\u5e94\u7684\u4fe1\u53f7\u4e5f\u53ef\u80fd\u7ecf\u6df7\u9891\u4eba\u4e2d\u9891\u901a\u9053\uff0c\u5f62\u6210\u201c\u955c\u50cf\u9891\u7387\u5e72\u6270\u201d\u6216\u201c\u955c\u9891\u5e72\u6270\u201d.\u5982\u679c\u67d0\u5bf9\u8bb2\u673a\u7684\u6280\u672f\u89c4\u683c\u4e66\u7ed9\u51fa NFM \u65b9\u5f0f\u65f6\u7684\u7b2c\u4e00\u4e2d\u9891\u4e3a47.25MHz,\u90a3\u4e48\u5728 145.00MHz\u6536\u5230\u7684\u955c\u9891\u4e01\u6270\u53ef\u80fd\u6765\u81ea:<strong><em>239.50MHz \u6216 50.50MHZ<\/em><\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5df2\u77e5\uff1a <strong><em>f<sub>IF<\/sub><\/em><\/strong> = 47.25MHz \uff0c <strong><em>f<sub>RF<\/sub><\/em><\/strong> = 145.00MHz<\/li>\n\n\n\n<li>\u8ba1\u7b97\u672c\u632f\uff1a <strong><em>f<sub>LO<\/sub><\/em><\/strong>  = 145.00 &#8211; 47.25 = 97.75MHz<\/li>\n\n\n\n<li>\u955c\u50cf\u9891\u7387\uff1a<strong><em>f<sub>IM<\/sub><\/em><\/strong>  = 2 x97.75 &#8211; 145.00 = 50.5MHz<\/li>\n\n\n\n<li>\u7ed3\u8bba\uff1a145.00MHz\u63a5\u6536\u65f6\u7684\u955c\u50cf\u5e72\u6270\u6765\u81ea50.5MHz\u3002<\/li>\n<\/ul>\n\n\n\n<p>MC1-0845\uff1a\u8d85\u5916\u5dee\u5f0f\u6536\u4fe1\u673a\u6240\u6536\u4fe1\u53f7\u7684\u9891\u7387\u8981\u6bd4\u672c\u632f\u9891\u7387\u4f4e(\u6216\u9ad8)\u4e00\u4e2a\u4e2d\u9891\u3002\u7136\u800c\uff0c\u6bd4\u672c\u632f\u9891\u7387\u9ad8(\u6216\u4f4e)\u4e00\u4e2a\u4e2d\u9891\u7684\u53e6\u4e00\u4e2a\u76f8\u5bf9\u5e94\u7684\u4fe1\u53f7\u4e5f\u53ef\u80fd\u7ecf\u6df7\u9891\u7a9c\u5165\u4e2d\u9891\u901a\u9053\uff0c\u5f62\u6210\u201c\u955c\u50cf\u9891\u7387\u5e72\u6270\u201d\u6216\u201c\u955c\u9891\u5343\u6270\u201d.\u5982\u679c\u67d0\u5bf9\u8bb2\u673a\u7684\u6280\u672f\u89c4\u683c\u4e66\u7ed9\u51fa\u7684UHF\u63a5\u6536\u673a\u7b2c\u4e00\u4e2d\u9891\u4e3a58.525MHZ\u90a3\u4e48\u5728 435.00MHz \u6536\u5230\u7684\u955c\u9891\u5e72\u6270\u53ef\u80fd\u6765\u81ea:317.95MHz \u6216 552.05MHz<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5df2\u77e5\uff1a<strong><em>f<sub>IF<\/sub><\/em><\/strong>= 58.525MHz\uff0c <strong><em>f<sub>RF<\/sub><\/em><\/strong> = 435.00MHz<\/li>\n\n\n\n<li>\u8ba1\u7b97\u672c\u632f\uff1a <strong><em>f<sub>LO<\/sub><\/em><\/strong>= 435.00 &#8211; 58.525 = 376.475MHz<\/li>\n\n\n\n<li>\u955c\u50cf\u9891\u7387\uff1a <strong><em>f<sub>IM<\/sub><\/em><\/strong> = 2 x376.475 &#8211; 435.00 = 317.95MHz<\/li>\n\n\n\n<li> \u7ed3\u8bba\uff1a435.00MHz\u63a5\u6536\u65f6\u7684\u955c\u50cf\u5e72\u6270\u6765\u81ea317.95MHz\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u56db\u3001\u6269\u5c55\uff1a\u82e5\u672c\u632f\u9ad8\u4e8e\u63a5\u6536\u9891\u7387\uff08 <strong><em>f<sub>LO<\/sub><\/em><\/strong>   = <strong><em>f<sub>RF<\/sub><\/em><\/strong> +<strong><em>f<sub>IF<\/sub><\/em><\/strong> \uff09<\/p>\n\n\n\n<p>\u6b64\u65f6\u955c\u50cf\u9891\u7387\u8ba1\u7b97\u4e3a\uff1a<strong><em>f<sub>IM<\/sub><\/em><\/strong> = 2(<strong><em>f<sub>RF<\/sub><\/em><\/strong> + <strong><em>f<sub>IF<\/sub><\/em><\/strong>) &#8211;  <strong><em>f<sub>RF<\/sub><\/em><\/strong>= <strong><em>f<sub>RF<\/sub><\/em><\/strong> + 2<strong><em>f<sub>IF<\/sub><\/em><\/strong><\/p>\n\n\n\n<p>\u4f8b\u5982\uff0c\u82e5HF\u63a5\u6536\u673a <strong><em>f<sub>IF<\/sub><\/em><\/strong> = 45.05MHz\uff0c<strong><em>f<sub>RF<\/sub><\/em><\/strong> = 145.00MHz \uff0c\u4e14 <strong><em>f<sub>LO<\/sub><\/em><\/strong>  = 145.00 + 45.05 = 190.05MHz \uff0c\u5219\uff1a <strong><em>f<sub>IM<\/sub><\/em><\/strong> = 145.00 + 2 x45.05 = 235.1MHz<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3<\/h3>\n\n\n\n<p>\u955c\u50cf\u5e72\u6270\u9891\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<strong><em>f<sub>IM<\/sub><\/em><\/strong>  = <strong><em>f<sub>RF<\/sub><\/em><\/strong> +-2<strong><em>f<sub>IF<\/sub><\/em><\/strong>\u5177\u4f53\u7b26\u53f7\u53d6\u51b3\u4e8e\u672c\u632f\u9891\u7387\u662f\u9ad8\u4e8e\u8fd8\u662f\u4f4e\u4e8e\u63a5\u6536\u9891\u7387\uff08\u901a\u5e38\u53d6\u8d1f\u53f7\uff0c\u5373 <strong><em>f<sub>IM<\/sub><\/em><\/strong>=( <strong><em>f<sub>RF<\/sub><\/em><\/strong> &#8211; 2<strong><em>f<sub>IF<\/sub><\/em><\/strong> \uff09\u3002\u901a\u8fc7\u6b64\u516c\u5f0f\u53ef\u5feb\u901f\u8ba1\u7b97\u4efb\u610f\u63a5\u6536\u9891\u7387\u4e0b\u7684\u955c\u50cf\u5e72\u6270\u6765\u6e90\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e1a\u4f59\u65e0\u7ebf\u7535\u53d1\u5c04\u673a\u7684\u6548\u7387<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e1a\u4f59\u65e0\u7ebf\u7535\u53d1\u5c04\u673a\u7684\u6548\u7387\u5b9a\u4e49<\/h3>\n\n\n\n<p>\u4e1a\u4f59\u65e0\u7ebf\u7535\u53d1\u5c04\u673a\u7684\u6548\u7387\u901a\u5e38\u6307\u5176\u8f93\u51fa\u7684\u5c04\u9891\u4fe1\u53f7\u529f\u7387\uff08\u6709\u7528\u529f\u7387\uff09\u4e0e\u8f93\u5165\u7684\u603b\u76f4\u6d41\u529f\u7387\uff08\u6216\u7535\u6e90\u63d0\u4f9b\u7684\u603b\u529f\u7387\uff09\u7684\u6bd4\u503c\uff0c\u5e38\u7528\u767e\u5206\u6bd4\u8868\u793a\u3002\u516c\u5f0f\u53ef\u8868\u793a\u4e3a\uff1a<strong><em>\u6548\u7387= \u5c04\u9891\u8f93\u51fa\u529f\u7387(P<sub>RF<\/sub>)\/\u76f4\u6d41\u8f93\u5165\u529f\u7387(P<sub>DC<\/sub>)x100%<\/em><\/strong>,\u4f8b\u5982\uff0c\u82e5\u53d1\u5c04\u673a\u6d88\u8017100W\u76f4\u6d41\u529f\u7387\uff0c\u8f93\u51fa50W\u5c04\u9891\u529f\u7387\uff0c\u5219\u6548\u7387\u4e3a50%\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u6548\u7387\u4f4e\u4e8e100%\u65f6\u7684\u80fd\u91cf\u635f\u8017\u53bb\u5411<\/h3>\n\n\n\n<p>\u53d1\u5c04\u673a\u6548\u7387\u65e0\u6cd5\u8fbe\u5230100%\uff0c\u4e3b\u8981\u662f\u56e0\u4e3a\u8f93\u5165\u7684\u76f4\u6d41\u529f\u7387\u4e2d\u5927\u90e8\u5206\u672a\u88ab\u8f6c\u5316\u4e3a\u6709\u7528\u7684\u5c04\u9891\u529f\u7387\uff0c\u800c\u662f\u4ee5\u5176\u4ed6\u5f62\u5f0f\u8017\u6563\u6216\u635f\u5931\u3002\u4e3b\u8981\u635f\u8017\u9014\u5f84\u5305\u62ec\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>. \u529f\u7387\u653e\u5927\u5668\uff08\u529f\u653e\uff09\u7684\u635f\u8017\n<ul 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class=\"wp-block-list\">\n<li>\u6765\u6e90\uff1a\u7535\u6c60\uff08\u4fbf\u643a\u5f0f\u7535\u53f0\uff09\u3001\u76f4\u6d41\u7535\u6e90\u9002\u914d\u5668\uff08\u53f0\u5f0f\u7535\u53f0\uff09\u3002<\/li>\n\n\n\n<li>\u4f18\u52bf\uff1a\u65e0\u9700\u53d8\u538b\u6574\u6d41\uff0c\u76f4\u63a5\u4f9b\u7ed9\u53d1\u5c04\u673a\uff1b\u9002\u5408\u79fb\u52a8\u573a\u666f\uff08\u5982\u8f66\u8f7d\u3001\u6237\u5916\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4ea4\u6d41\u4f9b\u7535\uff08\u5982220V\uff09\n<ul class=\"wp-block-list\">\n<li>\u6765\u6e90\uff1a\u5bb6\u7528\u5e02\u7535\u3002<\/li>\n\n\n\n<li>\u5185\u90e8\u8f6c\u6362\uff1a\u4ea4\u6d41\u7535\u6e90\u9700\u5148\u901a\u8fc7\u7535\u6e90\u6a21\u5757\u5904\u7406\uff1a\n<ol class=\"wp-block-list\">\n<li>\u53d8\u538b\uff1a\u7528\u53d8\u538b\u5668\u5c06220V\u964d\u4e3a\u4f4e\u538b\uff08\u598213.8V\u6216\u5176\u4ed6\u7535\u538b\uff09\uff1b<\/li>\n\n\n\n<li>\u6574\u6d41\u6ee4\u6ce2\uff1a\u5c06\u4ea4\u6d41\u7535\u8f6c\u4e3a\u8109\u52a8\u76f4\u6d41\uff0c\u518d\u6ee4\u9664\u7eb9\u6ce2\uff1b<\/li>\n\n\n\n<li>\u7a33\u538b\uff1a\u786e\u4fdd\u8f93\u51fa\u7a33\u5b9a\u76f4\u6d41\uff0c\u4f9b\u53d1\u5c04\u673a\u4f7f\u7528\u3002<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u672c\u8d28\uff1a\u80fd\u91cf\u5f62\u5f0f\u7684\u9002\u914d\n<ul class=\"wp-block-list\">\n<li>\u65e0\u8bba\u662f\u76f4\u6d41\u8fd8\u662f\u4ea4\u6d41\uff0c\u6700\u7ec8\u90fd\u8981\u8f6c\u5316\u4e3a\u53d1\u5c04\u673a\u7535\u8def\u6240\u9700\u7684\u4f4e\u538b\u76f4\u6d41\u529f\u7387\u3002\u4e0d\u540c\u7535\u538b\u53ea\u662f\u8f93\u5165\u5f62\u5f0f\u7684\u5dee\u5f02\uff0c\u7535\u6e90\u6a21\u5757\u89e3\u51b3\u4e86\u201c\u9002\u914d\u201d\u95ee\u9898\u2014\u2014\u5c31\u50cf\u624b\u673a\u65e2\u80fd\u63d2\u7535\u6e90\u9002\u914d\u5668\uff08\u4ea4\u6d41\u8f6c\u76f4\u6d41\uff09\uff0c\u4e5f\u80fd\u7528\u5145\u7535\u5b9d\uff08\u76f4\u6d41\u76f4\u4f9b\uff09\uff0c\u6838\u5fc3\u662f\u5185\u90e8\u7535\u8def\u80fd\u5904\u7406\u4e0d\u540c\u8f93\u5165\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u65e0\u7ebf\u7535\u5728\u65e0\u8c03\u5236\u60c5\u51b5\u4e0b\uff0c\u5728\u4e00\u4e2a\u5c04\u9891\u5468\u671f\u5185\u4f9b\u7ed9\u5929\u7ebf\u9988\u7ebf\u7684\u5e73\u5747\u529f\u7387\u79f0\u4e3a\u4ec0\u4e48\uff1f<\/h2>\n\n\n\n<p>\u5728\u65e0\u7ebf\u7535\u901a\u4fe1\u4e2d\uff0c\u5f53\u6ca1\u6709\u8c03\u5236\u65f6\uff08\u5373\u8f7d\u6ce2\u4fe1\u53f7\u672a\u88ab\u8c03\u5236\uff09\uff0c\u5728\u4e00\u4e2a\u5c04\u9891\u5468\u671f\u5185\u4f9b\u7ed9\u5929\u7ebf\u9988\u7ebf\u7684\u5e73\u5747\u529f\u7387\u79f0\u4e3a\u8f7d\u6ce2\u529f\u7387\uff08Carrier Power\uff09\u3002\u8f7d\u6ce2\u529f\u7387\u662f\u6307\u53d1\u5c04\u673a\u5728\u65e0\u8c03\u5236\u72b6\u6001\u4e0b\u8f93\u51fa\u7684\u8fde\u7eed\u6ce2\uff08CW\uff09\u529f\u7387\uff0c\u5b83\u4ee3\u8868\u4e86\u8f7d\u6ce2\u4fe1\u53f7\u672c\u8eab\u7684\u5e73\u5747\u529f\u7387\u3002\u5728\u5de5\u7a0b\u4e2d\uff0c\u8fd9\u901a\u5e38\u88ab\u7528\u4f5c\u53c2\u8003\u529f\u7387\u6c34\u5e73\uff0c\u7528\u4e8e\u8ba1\u7b97\u8c03\u5236\u540e\u7684\u529f\u7387\u53d8\u5316\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">MC1-0852<\/h2>\n\n\n\n<p>\u5982\u679c\u67d0\u8bdd\u97f3\u53d1\u5c04\u673a\u5728\u4e0d\u540c\u8c03\u5236\u65b9\u5f0f\u4e0b\u7684\u5cf0\u503c\u8f93\u51fa\u529f\u7387\u76f8\u540c\uff0c\u5219\u5728\u65e0\u8bed\u97f3\u8f93\u5165\u65f6\u5b9e\u9645\u5c04\u9891\u8f93\u51fa\u529f\u7387\u7684\u6392\u5e8f\u53ca\u539f\u56e0<\/p>\n\n\n\n<p>\u5047\u8bbeFM\uff08\u9891\u7387\u8c03\u5236\uff09\u3001AM\uff08\u5e45\u5ea6\u8c03\u5236\uff09\u548cSSB\uff08\u5355\u8fb9\u5e26\uff09\u7684\u5cf0\u503c\u8f93\u51fa\u529f\u7387\u76f8\u540c\uff08\u8bb0\u4e3aP<sub>peak<\/sub>),P_{\\text{peak}} \uff09\uff0c\u90a3\u4e48\u5728\u65e0\u8bed\u97f3\u8f93\u5165\uff08\u5373\u65e0\u8c03\u5236\uff09\u65f6\uff0c\u5b9e\u9645\u5c04\u9891\u8f93\u51fa\u529f\u7387\u7684\u5927\u5c0f\u6392\u5e8f\u4e3a\uff1aSSB &lt; AM &lt; FM\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u89e3\u91ca\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>FM\uff08\u9891\u7387\u8c03\u5236\uff09\uff1aFM\u662f\u4e00\u79cd\u6052\u5305\u7edc\u8c03\u5236\uff0c\u8f93\u51fa\u529f\u7387\u59cb\u7ec8\u4fdd\u6301\u6052\u5b9a\uff0c\u65e0\u8bba\u662f\u5426\u6709\u8c03\u5236\u4fe1\u53f7\u3002\u56e0\u6b64\uff0c\u5728\u65e0\u8bed\u97f3\u8f93\u5165\u65f6\uff0c\u5b9e\u9645\u5c04\u9891\u8f93\u51fa\u529f\u7387\u7b49\u4e8e\u5cf0\u503c\u8f93\u51fa\u529f\u7387\uff0c\u5373 <strong><em>P<sub>out<\/sub> = P<sub>peak<\/sub> <\/em><\/strong>\u3002<\/li>\n\n\n\n<li>AM\uff08\u5e45\u5ea6\u8c03\u5236\uff09\uff1aAM\u7684\u8f93\u51fa\u529f\u7387\u968f\u8c03\u5236\u4fe1\u53f7\u53d8\u5316\u3002\u5728100%\u8c03\u5236\uff08\u8c03\u5236\u6307\u6570 m = 1 ) \u65f6\uff0c\u5cf0\u503c\u8f93\u51fa\u529f\u7387 <em><strong>P<sub>peak<\/sub> <\/strong><\/em>\u662f\u8f7d\u6ce2\u529f\u7387 Pc \u76844\u500d\uff0c\u5373 <strong><em>P<sub>peak<\/sub>= P<sub>c<\/sub>x(1 + m)^2 = 4Pc<\/em><\/strong> \u3002\u56e0\u6b64\uff0c\u8f7d\u6ce2\u529f\u7387 <strong><em>Pc = P<sub>peak<\/sub> \/ 4 <\/em><\/strong>\u3002\u5728\u65e0\u8bed\u97f3\u8f93\u5165\u65f6\uff0cAM\u8f93\u51fa\u53ea\u6709\u8f7d\u6ce2\uff0c\u6240\u4ee5\u5b9e\u9645\u5c04\u9891\u8f93\u51fa\u529f\u7387\u4e3a<strong><em>P<sub>out<\/sub>  = Pc = P<sub>peak<\/sub> \/ 4 <\/em><\/strong>\u3002<\/li>\n\n\n\n<li>SSB\uff08\u5355\u8fb9\u5e26\uff09\uff1aSSB\u8c03\u5236\u6291\u5236\u4e86\u8f7d\u6ce2\u548c\u5176\u4e2d\u4e00\u4e2a\u8fb9\u5e26\uff0c\u53ea\u4f20\u8f93\u4e00\u4e2a\u8fb9\u5e26\u3002\u5728\u65e0\u8bed\u97f3\u8f93\u5165\u65f6\uff0c\u6ca1\u6709\u8c03\u5236\u4fe1\u53f7\uff0c\u53d1\u5c04\u673a\u901a\u5e38\u4e0d\u8f93\u51fa\u4efb\u4f55\u6709\u6548\u4fe1\u53f7\uff08\u8f93\u51fa\u529f\u7387\u63a5\u8fd1\u4e8e\u96f6\uff09\u3002\u56e0\u6b64\uff0c\u5b9e\u9645\u5c04\u9891\u8f93\u51fa\u529f\u7387 <strong><em>P<sub>out<\/sub> <\/em><\/strong> =0\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u57fa\u4e8e\u4ee5\u4e0a\u5206\u6790\uff0c\u5728\u65e0\u8bed\u97f3\u8f93\u5165\u65f6\uff0c\u5b9e\u9645\u5c04\u9891\u8f93\u51fa\u529f\u7387\u7684\u6392\u5e8f\u4e3a\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SSB\u6700\u5c0f\uff08\u63a5\u8fd1\u96f6\uff09\uff0c\u8f93\u51fa\u529f\u7387 \u2248 0<\/li>\n\n\n\n<li>AM\u6b21\u4e4b\uff08\u4e3a\u5cf0\u503c\u529f\u7387\u76841\/4\uff09\uff0c\u8f93\u51fa\u529f\u7387 = <strong><em>P<sub>peak<\/sub> <\/em><\/strong>\/ 4<\/li>\n\n\n\n<li>FM\u6700\u5927\uff08\u7b49\u4e8e\u5cf0\u503c\u529f\u7387\uff09\u3002\u8f93\u51fa\u529f\u7387 = <strong><em> P<sub>peak<\/sub> <\/em><\/strong><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u9009\u62e9\u6027\u548c\u7075\u654f\u5ea6<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e00\u90e8\u5206\uff1a\u63a5\u6536\u673a\u9009\u62e9\u6027\u6307\u6807<\/h3>\n\n\n\n<p>\u9009\u62e9\u6027\u63cf\u8ff0\u4e86\u63a5\u6536\u673a\u4ece\u4f17\u591a\u4fe1\u53f7\u4e2d\u9009\u51fa\u6709\u7528\u4fe1\u53f7\u5e76\u6291\u5236\u65e0\u7528\u5e72\u6270\u7684\u80fd\u529b\u3002\u6839\u636e\u5e72\u6270\u4fe1\u53f7\u4e0e\u5de5\u4f5c\u9891\u7387\u7684\u76f8\u5bf9\u4f4d\u7f6e\uff0c\u6709\u4e0d\u540c\u7684\u9009\u62e9\u6027\u6307\u6807\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u6297\u62d2\u4e34\u8fd1\u9891\u7387\u5e72\u6270\u7684\u80fd\u529b\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u4e3b\u8981\u7528\u4e24\u4e2a\u6307\u6807\u6765\u63cf\u8ff0\uff1a\n<ol class=\"wp-block-list\">\n<li>\u4fe1\u9053\u5e26\u5bbd\uff1a \u6307\u63a5\u6536\u673a\u4e2d\u9891\u6ee4\u6ce2\u5668\uff08\u901a\u5e38\u662f\u6676\u4f53\u6ee4\u6ce2\u5668\u6216\u9676\u74f7\u6ee4\u6ce2\u5668\uff09\u7684-3dB\uff08\u6216-6dB\uff09\u5e26\u5bbd\u3002\u5b83\u51b3\u5b9a\u4e86\u63a5\u6536\u673a\u5141\u8bb8\u901a\u8fc7\u7684\u4e3b\u4fe1\u53f7\u9891\u8c31\u5bbd\u5ea6\u3002\u5bf9\u4e8eSSB\u8bdd\u97f3\u4fe1\u53f7\uff0c\u8fd9\u4e2a\u5e26\u5bbd\u901a\u5e38\u57282.2kHz\u52302.7kHz\u4e4b\u95f4\u3002<\/li>\n\n\n\n<li>\u77e9\u5f62\u7cfb\u6570\uff1a \u63cf\u8ff0\u4e86\u6ee4\u6ce2\u5668\u4ece\u901a\u5e26\u5230\u963b\u5e26\u7684\u9661\u5ced\u7a0b\u5ea6\u3002\u5b83\u5b9a\u4e49\u4e3a\u6ee4\u6ce2\u5668-60dB\u5e26\u5bbd\u4e0e-3dB\u5e26\u5bbd\u7684\u6bd4\u503c\uff08\u4f8b\u5982 KR = B-60dB \/ B-3dB\uff09\u3002\u77e9\u5f62\u7cfb\u6570\u8d8a\u63a5\u8fd11\uff0c\u8bf4\u660e\u6ee4\u6ce2\u5668\u7684\u8fb9\u7f18\u8d8a\u9661\u5ced\uff0c\u5bf9\u7d27\u90bb\u4fe1\u9053\uff08\u76f8\u90bb\u9891\u9053\uff09\u7684\u5e72\u6270\u6291\u5236\u80fd\u529b\u5c31\u8d8a\u5f3a\u3002<\/li>\n<\/ol>\n<\/li>\n\n\n\n<li>\u5c0f\u7ed3\uff1a \u4e3a\u4e86\u6297\u62d2\u4e34\u8fd1\u5e72\u6270\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u5e26\u5bbd\u9002\u5f53\u4e14\u77e9\u5f62\u7cfb\u6570\u5c0f\u7684\u4fe1\u9053\u6ee4\u6ce2\u5668\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u63a5\u6536SSB\u8bdd\u97f3\u4fe1\u53f7\u65f6\u7684\u9891\u54cd\u5747\u5300\u7a0b\u5ea6\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u901a\u5e26\u5185\u662f\u5426\u88ab\u5e73\u7b49\u5730\u653e\u5927\u6216\u8870\u51cf\u3002<\/li>\n\n\n\n<li>\u5e26\u5185\u6ce2\u52a8\uff1a \u6307\u5728\u4fe1\u9053\u5e26\u5bbd\uff08\u901a\u5e26\uff09\u5185\uff0c\u589e\u76ca\u7684\u6700\u5927\u503c\u4e0e\u6700\u5c0f\u503c\u4e4b\u5dee\u3002\u5e26\u5185\u6ce2\u52a8\u8d8a\u5c0f\u8d8a\u597d\uff0c\u8868\u793a\u901a\u5e26\u5185\u9891\u7387\u54cd\u5e94\u5e73\u5766\uff0c\u4e0d\u4f1a\u9020\u6210\u4fe1\u53f7\u67d0\u4e9b\u9891\u7387\u6210\u5206\u88ab\u7a81\u51fa\u6216\u524a\u5f31\uff0c\u4ece\u800c\u4fdd\u8bc1\u8bdd\u97f3\u4fe1\u53f7\u7684\u771f\u5b9e\u6027\uff0c\u907f\u514d\u5931\u771f\u3002<\/li>\n\n\n\n<li>\u5c0f\u7ed3\uff1a \u5bf9\u4e8eSSB\u8bdd\u97f3\uff0c\u6211\u4eec\u5e0c\u671b\u5e26\u5185\u6ce2\u52a8\u5c3d\u53ef\u80fd\u5c0f\uff0c\u4ee5\u4fdd\u8bc1\u8bdd\u97f3\u4fdd\u771f\u5ea6<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6297\u62d2\u76f8\u8ddd\u5de5\u4f5c\u9891\u7387\u8f83\u8fdc\u7684\u5f3a\u5e72\u6270\u4fe1\u53f7\u80fd\u529b\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u7c7b\u5e72\u6270\uff08\u4e5f\u79f0\u4e3a\u201c\u963b\u585e\u5e72\u6270\u201d\uff09\u5c1a\u672a\u8fdb\u5165\u7a84\u5e26\u7684\u4e2d\u9891\u6ee4\u6ce2\u5668\uff0c\u9700\u8981\u5728\u63a5\u6536\u673a\u7684\u524d\u7aef\uff08\u9ad8\u9891\u653e\u5927\u5668\u548c\u6df7\u9891\u5668\uff09\u5c31\u88ab\u6291\u5236\u3002<\/li>\n\n\n\n<li>\u524d\u7aef\u5e26\u5bbd\uff1a \u6307\u63a5\u6536\u673a\u8f93\u5165\u7535\u8def\u548c\u9ad8\u9891\u653e\u5927\u5668\u7b49\u524d\u7aef\u7535\u8def\u7684\u9891\u7387\u54cd\u5e94\u8303\u56f4\u3002\u5982\u679c\u524d\u7aef\u5e26\u5bbd\u8fc7\u5bbd\uff0c\u8bb8\u591a\u8fdc\u79bb\u5de5\u4f5c\u9891\u7387\u7684\u5f3a\u4fe1\u53f7\u4e5f\u4f1a\u8fdb\u5165\u6df7\u9891\u5668\uff0c\u53ef\u80fd\u5bfc\u81f4\u6df7\u9891\u5668\u8fc7\u8f7d\uff08\u9971\u548c\uff09\uff0c\u4ea7\u751f\u201c\u963b\u585e\u201d\u6548\u5e94\uff0c\u4f7f\u6709\u7528\u4fe1\u53f7\u65e0\u6cd5\u88ab\u6b63\u5e38\u63a5\u6536\u3002\u4e00\u4e2a\u9009\u62e9\u6027\u597d\u7684\u524d\u7aef\uff08\u8f83\u7a84\u7684\u524d\u7aef\u5e26\u5bbd\uff09\u53ef\u4ee5\u6709\u6548\u6291\u5236\u8fd9\u4e9b\u8fdc\u7aef\u5f3a\u5e72\u6270\u3002<\/li>\n\n\n\n<li>\u5c0f\u7ed3\uff1a \u4e3a\u4e86\u6297\u62d2\u8fdc\u7aef\u5f3a\u5e72\u6270\uff0c\u6211\u4eec\u9700\u8981\u63a5\u6536\u673a\u5177\u6709\u9009\u62e9\u6027\u826f\u597d\u7684\u524d\u7aef\u7535\u8def\uff08\u7a84\u524d\u7aef\u5e26\u5bbd\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u6297\u62d2\u76f8\u805a\u5de5\u4f5c\u9891\u7387\u4e24\u500d\u4e8e\u4e2d\u9891\u7684\u5f3a\u5e72\u6270\u4fe1\u53f7\u7684\u80fd\u529b \u2014\u2014 \u955c\u50cf\u6291\u5236\u6bd4\n<ul class=\"wp-block-list\">\n<li>\u4e3a\u4ec0\u4e48\u662f\u955c\u50cf\u6291\u5236\u6bd4\uff1f\u8fd9\u662f\u7531\u63a5\u6536\u673a\u7684\u8d85\u5916\u5dee\u5de5\u4f5c\u539f\u7406\u51b3\u5b9a\u7684\u3002\n<ul class=\"wp-block-list\">\n<li>\u5de5\u4f5c\u539f\u7406\uff1a \u63a5\u6536\u673a\u901a\u8fc7\u672c\u632f\uff08LO\uff09\u5c06\u5c04\u9891\u4fe1\u53f7\u4e0b\u53d8\u9891\u5230\u56fa\u5b9a\u7684\u4e2d\u9891\uff08IF\uff09\u3002\u516c\u5f0f\u662f\uff1a|frf &#8211; flo| = fif\u3002<\/li>\n\n\n\n<li>\u955c\u50cf\u9891\u7387\u7684\u4ea7\u751f\uff1a \u5047\u8bbe\u63a5\u6536\u673a\u5de5\u4f5c\u9891\u7387\u662f frf\uff0c\u4e2d\u9891\u662f fif\uff0c\u90a3\u4e48\u672c\u632f\u9891\u7387 flo \u53ef\u4ee5\u662f frf + fif\uff08\u9ad8\u672c\u632f\uff09\u6216 frf &#8211; fif\uff08\u4f4e\u672c\u632f\uff09\u3002\u5bf9\u4e8e\u9ad8\u672c\u632f (flo = frf + fif)\uff1a\u6709\u7528\u4fe1\u53f7 frf \u4e0b\u53d8\u9891\u540e\u5f97\u5230 flo &#8211; frf = fif\u3002\u955c\u50cf\u9891\u7387 fimage \u51fa\u73b0\u5728 flo + fif = (frf + fif) + fif = frf + 2fif\u3002\u8fd9\u4e2a\u955c\u50cf\u4fe1\u53f7\u540c\u6837\u53ef\u4ee5\u4e0e\u672c\u632f\u6df7\u9891\u4ea7\u751f\u4e2d\u9891\uff1afimage &#8211; flo = (frf + 2fif) &#8211; (frf + fif) = fif\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u5982\u679c\u6709\u4e00\u4e2a\u5f3a\u4fe1\u53f7\u6070\u597d\u843d\u5728\u955c\u50cf\u9891\u7387 frf + 2fif \u4e0a\uff0c\u5b83\u5c31\u4f1a\u548c\u6709\u7528\u4fe1\u53f7\u4e00\u8d77\u8fdb\u5165\u4e2d\u9891\u901a\u9053\uff0c\u5f62\u6210\u5e72\u6270\u3002\u955c\u50cf\u6291\u5236\u6bd4 \u5c31\u662f\u8861\u91cf\u63a5\u6536\u673a\u6291\u5236\u8fd9\u4e2a\u7279\u5b9a\u9891\u7387\uff08\u5de5\u4f5c\u9891\u7387 \u00b1 2\u500d\u4e2d\u9891\uff09\u5e72\u6270\u4fe1\u53f7\u7684\u80fd\u529b\u3002\u5b83\u4e3b\u8981\u7531\u63a5\u6536\u673a\u5c04\u9891\u524d\u7aef\u6ee4\u6ce2\u5668\u7684\u6027\u80fd\u51b3\u5b9a\u3002\u955c\u50cf\u6291\u5236\u6bd4\u8d8a\u9ad8\uff0c\u63a5\u6536\u673a\u6297\u955c\u50cf\u5e72\u6270\u7684\u80fd\u529b\u5c31\u8d8a\u5f3a\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u7b2c\u4e8c\u90e8\u5206\uff1a\u63a5\u6536\u673a\u7075\u654f\u5ea6\u6307\u6807<\/h3>\n\n\n\n<p>\u7075\u654f\u5ea6\u8861\u91cf\u63a5\u6536\u673a\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u63a5\u6536\u673a\u7075\u654f\u5ea6\u7684\u6307\u6807\u7684\u6570\u503c\u5927\u5c0f\u5177\u6709\u4ec0\u4e48\u610f\u4e49\uff1f\n<ul class=\"wp-block-list\">\n<li>\u7075\u654f\u5ea6\u7684\u6570\u503c\uff08\u5728\u6ee1\u8db3\u4e00\u5b9a\u4fe1\u566a\u6bd4\u6216\u4fe1\u7eb3\u6bd4\u6761\u4ef6\u4e0b\u7684\u6700\u5c0f\u4fe1\u53f7\u5f3a\u5ea6\uff09\u8d8a\u5c0f\uff0c\u8bf4\u660e\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u8d8a\u9ad8\uff0c\u6027\u80fd\u8d8a\u597d\u3002<\/li>\n\n\n\n<li>\u7269\u7406\u610f\u4e49\uff1a \u4e00\u4e2a-120dBm\u7684\u7075\u654f\u5ea6\u4f18\u4e8e-110dBm\u7684\u7075\u654f\u5ea6\u3002\u8fd9\u610f\u5473\u7740\u524d\u8005\u80fd\u591f\u4ece\u66f4\u5fae\u5f31\u7684\u80cc\u666f\u566a\u58f0\u4e2d\u68c0\u6d4b\u5e76\u89e3\u8c03\u51fa\u4fe1\u53f7\uff0c\u56e0\u800c\u901a\u4fe1\u8ddd\u79bb\u66f4\u8fdc\uff0c\u6216\u5728\u4fe1\u53f7\u5fae\u5f31\u7684\u6761\u4ef6\u4e0b\u4ecd\u80fd\u4fdd\u6301\u901a\u4fe1\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7528\u529f\u7387\u7535\u5e73\u8868\u793a\u63a5\u6536\u673a\u7075\u654f\u5ea6\n<ul class=\"wp-block-list\">\n<li>\u610f\u4e49\uff1a \u8fd9\u662f\u6700\u5e38\u7528\u548c\u6700\u6839\u672c\u7684\u8868\u793a\u65b9\u6cd5\u3002\u5b83\u76f4\u63a5\u53cd\u6620\u4e86\u4f7f\u63a5\u6536\u673a\u6b63\u5e38\u5de5\u4f5c\u7684\u8f93\u5165\u4fe1\u53f7\u529f\u7387\u3002\u56e0\u4e3a\u63a5\u6536\u673a\u672c\u8d28\u4e0a\u5904\u7406\u7684\u662f\u4fe1\u53f7\u7684\u529f\u7387\u3002<\/li>\n\n\n\n<li>\u5e38\u7528\u5355\u4f4d\uff1a\n<ul class=\"wp-block-list\">\n<li>dBm\uff1a \u76f8\u5bf9\u4e8e1\u6beb\u74e6\u7684\u5206\u8d1d\u503c\u3002P(dBm) = 10 * log10(P\/1mW)\u3002\u8fd9\u662f\u6700\u901a\u7528\u7684\u5355\u4f4d\u3002<\/li>\n\n\n\n<li>dBW\uff1a \u76f8\u5bf9\u4e8e1\u74e6\u7684\u5206\u8d1d\u503c\uff0cP(dBW) = 10 * log10(P\/1W)\u3002\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\u8f83\u5c11\u7528\u4e8e\u8868\u793a\u7075\u654f\u5ea6\u3002<\/li>\n\n\n\n<li>\u4f8b\u5982\uff1a \u4e00\u4e2a\u7075\u654f\u5ea6\u4e3a0.15\u03bcV\u7684\u63a5\u6536\u673a\uff0c\u572850\u6b27\u59c6\u8f93\u5165\u963b\u6297\u4e0b\uff0c\u6362\u7b97\u6210\u529f\u7387\u662f P = V\u00b2\/R = (0.15e-6)\u00b2 \/ 50 = 4.5e-16 W\uff0c\u6362\u7b97\u6210dBm\u662f 10*log10(4.5e-16 \/ 0.001) \u2248 -123.5 dBm\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7528\u7535\u538b\u7535\u5e73\u8868\u793a\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\n<ul class=\"wp-block-list\">\n<li>\u610f\u4e49\uff1a \u5728\u5b9e\u9a8c\u5ba4\u6216\u4f7f\u7528\u9ad8\u9891\u7535\u538b\u8868\u8fdb\u884c\u6d4b\u91cf\u65f6\uff0c\u7528\u7535\u538b\u8868\u793a\u66f4\u4e3a\u76f4\u89c2\u3002\u5b83\u8868\u793a\u5728\u63a5\u6536\u673a\u8f93\u5165\u7aef\u4ea7\u751f\u6807\u51c6\u8f93\u51fa\uff08\u598212dB\u4fe1\u7eb3\u6bd4\uff09\u65f6\u6240\u9700\u7684\u7535\u52a8\u52bf\uff08EMF\uff09\u6216\u573a\u5f3a\u3002<\/li>\n\n\n\n<li>\u5e38\u7528\u5355\u4f4d\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5fae\u4f0f\uff08\u03bcV, microvolt\uff09\uff1a\u6700\u5e38\u7528\u3002<\/li>\n\n\n\n<li>\u5206\u8d1d\u5fae\u4f0f\uff08dB\u03bcV\uff09\uff1a\u76f8\u5bf9\u4e8e1\u5fae\u4f0f\u7684\u5206\u8d1d\u503c\u3002U(dB\u03bcV) = 20 * log10(U \/ 1\u03bcV)\u3002<\/li>\n\n\n\n<li>\u5b83\u4e0edBm\u53ef\u4ee5\u6362\u7b97\uff0c\u5173\u7cfb\u4e3a\uff1aP(dBm) = U(dB\u03bcV) &#8211; 10*log10(R) &#8211; 90\uff0c\u5176\u4e2dR\u4e3a\u7cfb\u7edf\u963b\u6297\uff08\u901a\u5e38\u4e3a50\u03a9\u621675\u03a9\uff09\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e50\u03a9\u7cfb\u7edf\uff0cP(dBm) \u2248 U(dB\u03bcV) &#8211; 107\u3002<\/li>\n\n\n\n<li>\u5bf9\u4e8e75\u03a9\u7cfb\u7edf\uff0cP(dBm) \u2248 U(dB\u03bcV) &#8211; 109\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u6307\u6807\u7c7b\u522b<\/th><th>\u5177\u4f53\u6307\u6807<\/th><th>\u5bf9\u6297\u7684\u5e72\u6270\/\u63cf\u8ff0\u7684\u7279\u6027<\/th><th>\u610f\u4e49<\/th><\/tr><\/thead><tbody><tr><td>\u9009\u62e9\u6027<\/td><td>\u4fe1\u9053\u5e26\u5bbd\u3001\u77e9\u5f62\u7cfb\u6570<\/td><td>\u4e34\u8fd1\u9891\u7387\u5e72\u6270<\/td><td>\u5e26\u5bbd\u51b3\u5b9a\u901a\u5e26\uff0c\u77e9\u5f62\u7cfb\u6570\u51b3\u5b9a\u8fb9\u7f18\u9661\u5ced\u5ea6<\/td><\/tr><tr><td><\/td><td>\u5e26\u5185\u6ce2\u52a8<\/td><td>\u5e26\u5185\u9891\u54cd\u5747\u5300\u5ea6<\/td><td>\u5f71\u54cd\u4fe1\u53f7\u4fdd\u771f\u5ea6\uff0c\u503c\u8d8a\u5c0f\u8d8a\u597d<\/td><\/tr><tr><td><\/td><td>\u524d\u7aef\u5e26\u5bbd<\/td><td>\u76f8\u8ddd\u8f83\u8fdc\u7684\u5f3a\u5e72\u6270\uff08\u963b\u585e\uff09<\/td><td>\u7a84\u5e26\u5bbd\u53ef\u63d0\u524d\u8870\u51cf\u8fdc\u7aef\u5f3a\u4fe1\u53f7<\/td><\/tr><tr><td><\/td><td>\u955c\u50cf\u6291\u5236\u6bd4<\/td><td>\u76f8\u805a2\u500d\u4e2d\u9891\u7684\u5e72\u6270<\/td><td>\u7531\u8d85\u5916\u5dee\u7ed3\u6784\u51b3\u5b9a\uff0c\u8861\u91cf\u6297\u955c\u50cf\u5e72\u6270\u80fd\u529b<\/td><\/tr><tr><td>\u7075\u654f\u5ea6<\/td><td>\u6570\u503c\u5927\u5c0f<\/td><td>\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b<\/td><td>\u6570\u503c\u8d8a\u5c0f\uff0c\u7075\u654f\u5ea6\u8d8a\u9ad8\uff0c\u6027\u80fd\u8d8a\u597d<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>MC1-0867<\/strong><\/h2>\n\n\n\n<p>\u4e1a\u4f59\u65e0\u7ebf\u7535\u63a5\u6536\u673a\u4eba\u591a\u5177\u5907\u4fe1\u53f7\u5f3a\u5ea6\u6307\u793a\u529f\u80fd,\u5728VHF\/UHF\u9891\u6bb5,\u4fe1\u53f7\u5f3a\u5ea6\u7684\u6700\u5c0f\u523b\u5ea6S1\u4e0e\u8f93\u4eba\u4fe1\u53f7\u529f\u7387\u7535\u5e73-141dBm(50Q\u4e0a\u7684\u7535\u538b\u7535\u5e730.02\u03bcV)\u76f8\u4e00\u81f4;\u800c\u5728HF\u9891\u6bb5,S1 \u5219\u4e0e-121dBm \u7684\u8f93\u4eba\u4fe1\u53f7(50Q\u4e0a\u76840.2uV)\u76f8\u5bf9\u5e94\uff0c\u8fd9\u662f\u56e0\u4e3a:<\/p>\n\n\n\n<p>[A]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]HF \u9891\u6bb5\u7684\u906d\u666f\u566a\u58f0\u8f83 VHF\/UHF \u9891\u6bb5\u4e3a\u9ad8\uff0c\u4f7f\u5f97\u53ef\u611f\u77e5\u6700\u5c0f\u4fe1\u53f7\u7535\u5e73\u76f8\u5e94\u9ad8\u51fa\u7ea6 20dB<\/li>\n\n\n\n<li>[B]\u7531\u4e8e\u6280\u672f\u539f\u56e0\uff0cHF \u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u90fd\u6bd4 VHF\/UHF \u9891\u6bb5\u7684\u4f4e\u5927\u7ea6 20dB<\/li>\n\n\n\n<li>[C]HF\u4e1a\u4f59\u7535\u53f0\u529f\u7387\u5927\u4e00\u4e9b\uff0c\u800c VHF\/UHF\u7684\u76f8\u5bf9\u8f83\u5c0f\uff0c\u8fd9\u5bfc\u81f4\u4fe1\u53f7\u5f3a\u5ea6\u7684\u523b\u5ea6\u6807\u51c6\u5dee\u5f02<\/li>\n\n\n\n<li>[D]HF \u4e1a\u4f59\u7535\u53f0\u4e3b\u8981\u7528\u4e8e DX \u901a\u4fe1\uff0c\u800c VHF\/UHF \u7684\u9762\u5411\u672c\u5730\u901a\u4fe1\uff0c\u523b\u5ea6\u53ef\u4ee5\u66f4\u968f\u610f\u4e00\u4e9b<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9898\u76ee\u590d\u8ff0\u4e0e\u6838\u5fc3\u95ee\u9898\n<ul class=\"wp-block-list\">\n<li>\u9898\u76ee\u6307\u51fa\uff0c\u5728\u4e1a\u4f59\u65e0\u7ebf\u7535\u4e2d\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u8868S1\u523b\u5ea6\u5bf9\u5e94\u7684\u8f93\u5165\u4fe1\u53f7\u529f\u7387\u5728VHF\/UHF\u9891\u6bb5\u662f-141dBm\uff0c\u800c\u5728HF\u9891\u6bb5\u662f-121dBm\u3002HF\u9891\u6bb5\u7684\u6807\u51c6\u6bd4VHF\/UHF\u9ad8\u4e8620dB\uff08\u5373\u9700\u8981\u5f3a100\u500d\u7684\u4fe1\u53f7\u529f\u7387\u624d\u80fd\u8fbe\u5230\u76f8\u540c\u7684S1\u8bfb\u6570\uff09\u3002<\/li>\n\n\n\n<li>\u95ee\uff1a\u4e3a\u4ec0\u4e48\u4f1a\u6709\u8fd9\u4e2a\u5dee\u5f02\uff1f<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u77e5\u8bc6\u70b9\u5206\u6790\n<ul class=\"wp-block-list\">\n<li>\u8fd9\u9053\u9898\u8003\u5bdf\u7684\u6838\u5fc3\u77e5\u8bc6\u70b9\u662f\uff1a\u63a5\u6536\u673a\u7684\u5b9e\u9645\u7075\u654f\u5ea6\uff08\u5373\u53ef\u8fa8\u8bc6\u7684\u6700\u5c0f\u4fe1\u53f7\uff09\u53d7\u9650\u4e8e\u5916\u90e8\u73af\u5883\u566a\u58f0\u548c\u63a5\u6536\u673a\u5185\u90e8\u566a\u58f0\uff0c\u800c\u4e0d\u4ec5\u4ec5\u662f\u63a5\u6536\u673a\u81ea\u8eab\u7684\u6027\u80fd\u3002<\/li>\n\n\n\n<li>\u7406\u8bba\u7075\u654f\u5ea6\uff1a \u4e00\u4e2a\u63a5\u6536\u673a\u5728\u7406\u60f3\u3001\u7edd\u5bf9\u5b89\u9759\u7684\u73af\u5883\u4e0b\uff0c\u80fd\u63a5\u6536\u5230\u591a\u5fae\u5f31\u7684\u4fe1\u53f7\uff0c\u8fd9\u7531\u5176\u5185\u90e8\u7535\u8def\u566a\u58f0\u51b3\u5b9a\u3002<\/li>\n\n\n\n<li>\u5b9e\u9645\u7075\u654f\u5ea6\uff1a \u5728\u771f\u5b9e\u4e16\u754c\u4e2d\uff0c\u63a5\u6536\u673a\u63a5\u6536\u5230\u7684\u603b\u80fd\u91cf\u5305\u62ec\u6709\u7528\u4fe1\u53f7\u548c\u65e0\u5904\u4e0d\u5728\u7684\u80cc\u666f\u566a\u58f0\u3002\u5f53\u80cc\u666f\u566a\u58f0\u7684\u5f3a\u5ea6\u8fdc\u9ad8\u4e8e\u63a5\u6536\u673a\u5185\u90e8\u566a\u58f0\u65f6\uff0c\u73af\u5883\u566a\u58f0\u5c31\u6210\u4e86\u51b3\u5b9a\u80fd\u5426\u542c\u5230\u4fe1\u53f7\u7684\u4e3b\u5bfc\u56e0\u7d20\u3002\u4fe1\u53f7\u5fc5\u987b\u5f3a\u5230\u80fd\u201c\u7a81\u51fa\u201d\u4e8e\u8fd9\u4e2a\u80cc\u666f\u566a\u58f0\u4e4b\u4e0a\uff0c\u624d\u80fd\u88ab\u8bc6\u522b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u9009\u9879\u9010\u4e00\u5206\u6790\n<ul class=\"wp-block-list\">\n<li>[A] HF\u9891\u6bb5\u7684\u80cc\u666f\u566a\u58f0\u8f83VHF\/UHF\u9891\u6bb5\u4e3a\u9ad8\uff0c\u4f7f\u5f97\u53ef\u611f\u77e5\u6700\u5c0f\u4fe1\u53f7\u7535\u5e73\u76f8\u5e94\u9ad8\u51fa\u7ea620dB\n<ul class=\"wp-block-list\">\n<li>\u6b63\u786e\u3002 \u8fd9\u6b63\u662f\u6839\u672c\u539f\u56e0\u3002HF\u9891\u6bb5\uff08\u77ed\u6ce2\uff09\u53d7\u5230\u6765\u81ea\u94f6\u6cb3\u7cfb\u3001\u5927\u6c14\uff08\u96f7\u7535\uff09\u4ee5\u53ca\u4eba\u9020\u8bbe\u5907\u7684\u566a\u58f0\u5f71\u54cd\u975e\u5e38\u663e\u8457\u3002\u8fd9\u4e9b\u80cc\u666f\u566a\u58f0\u7684\u5f3a\u5ea6\u672c\u8eab\u5c31\u5f88\u9ad8\uff0c\u50cf\u4e00\u4e2a\u201c\u566a\u58f0\u5730\u677f\u201d\u3002\u4e3a\u4e86\u80fd\u8ba9\u4fe1\u53f7\u5728\u8fd9\u4e2a\u5608\u6742\u7684\u201c\u5730\u677f\u201d\u4e0a\u88ab\u611f\u77e5\u5230\uff0c\u4fe1\u53f7\u672c\u8eab\u5fc5\u987b\u8db3\u591f\u5f3a\u3002\u56e0\u6b64\uff0c\u5728\u5b9a\u4e49S1\uff08\u521a\u80fd\u88ab\u611f\u77e5\u7684\u4fe1\u53f7\uff09\u65f6\uff0c\u6807\u51c6\u5c31\u5b9a\u5f97\u66f4\u9ad8\u3002\u800cVHF\/UHF\u9891\u6bb5\u7684\u73af\u5883\u566a\u58f0\u8981\u4f4e\u5f97\u591a\uff0c\u6240\u4ee5S1\u7684\u6807\u51c6\u53ef\u4ee5\u5b9a\u5f97\u66f4\u4f4e\uff0c\u66f4\u63a5\u8fd1\u63a5\u6536\u673a\u81ea\u8eab\u7684\u7406\u8bba\u7075\u654f\u5ea6\u6781\u9650\u3002\u8fd920dB\u7684\u5dee\u5f02\uff0c\u51c6\u786e\u5730\u53cd\u6620\u4e86\u4e24\u4e2a\u9891\u6bb5\u5178\u578b\u73af\u5883\u566a\u58f0\u6c34\u5e73\u7684\u5dee\u5f02\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[B] \u7531\u4e8e\u6280\u672f\u539f\u56e0\uff0cHF\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u90fd\u6bd4VHF\/UHF\u9891\u6bb5\u7684\u4f4e\u5927\u7ea620dB\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u3002 \u73b0\u4ee3\u63a5\u6536\u673a\u6280\u672f\u5df2\u7ecf\u975e\u5e38\u5148\u8fdb\uff0cHF\u63a5\u6536\u673a\u672c\u8eab\u53ef\u4ee5\u8fbe\u5230\u5f88\u9ad8\u7684\u7075\u654f\u5ea6\u3002\u95ee\u9898\u4e0d\u5728\u4e8e\u63a5\u6536\u673a\u201c\u505a\u4e0d\u5230\u201d\uff0c\u800c\u5728\u4e8e\u5373\u4f7f\u505a\u5230\u4e86\uff0c\u5728HF\u9891\u6bb5\u7684\u9ad8\u73af\u5883\u566a\u58f0\u4e0b\uff0c\u4f60\u4e5f\u65e0\u6cd5\u8bc6\u522b\u51fa\u6bd4\u566a\u58f0\u66f4\u5fae\u5f31\u7684\u4fe1\u53f7\u3002\u8fd9\u4e2a\u5dee\u5f02\u662f\u7531\u5916\u90e8\u73af\u5883\u51b3\u5b9a\u7684\u523b\u5ea6\u6807\u51c6\uff0c\u800c\u975e\u63a5\u6536\u673a\u56fa\u6709\u7684\u6280\u672f\u80fd\u529b\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[C] HF\u4e1a\u4f59\u7535\u53f0\u529f\u7387\u5927\u4e00\u4e9b\uff0c\u800cVHF\/UHF\u7684\u76f8\u5bf9\u8f83\u5c0f\uff0c\u8fd9\u5bfc\u81f4\u4fe1\u53f7\u5f3a\u5ea6\u7684\u523b\u5ea6\u6807\u51c6\u5dee\u5f02\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u3002 \u4fe1\u53f7\u5f3a\u5ea6\u8868\uff08S\u8868\uff09\u6821\u51c6\u7684\u662f\u63a5\u6536\u7aef\u7684\u8f93\u5165\u4fe1\u53f7\u5f3a\u5ea6\uff0c\u4e0e\u53d1\u5c04\u53f0\u7684\u529f\u7387\u5927\u5c0f\u65e0\u5173\u3002\u65e0\u8bba\u53d1\u5c04\u529f\u7387\u591a\u5927\uff0c\u5230\u8fbe\u63a5\u6536\u5929\u7ebf\u65f6\u4fe1\u53f7\u5fae\u5f31\uff0cS\u8868\u7684\u8bfb\u6570\u5c31\u662f\u4f4e\u7684\u3002\u523b\u5ea6\u6807\u51c6\u662f\u4e3a\u4e86\u7edf\u4e00\u6d4b\u91cf\u57fa\u51c6\uff0c\u4e0d\u4f1a\u56e0\u4e3a\u5927\u5bb6\u5e38\u7528\u5927\u529f\u7387\u53d1\u5c04\u5c31\u53bb\u4fee\u6539\u63a5\u6536\u673a\u7684\u5b9a\u4e49\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>[D] HF\u4e1a\u4f59\u7535\u53f0\u4e3b\u8981\u7528\u4e8eDX\u901a\u4fe1\uff0c\u800cVHF\/UHF\u7684\u9762\u5411\u672c\u5730\u901a\u4fe1\uff0c\u523b\u5ea6\u53ef\u4ee5\u66f4\u968f\u610f\u4e00\u4e9b\n<ul class=\"wp-block-list\">\n<li>\u9519\u8bef\u3002 \u8fd9\u662f\u4e00\u4e2a\u5bf9\u73b0\u8c61\u76ee\u7684\u6027\u7684\u9519\u8bef\u731c\u6d4b\u3002S\u8868\u7684\u523b\u5ea6\u662f\u56fd\u9645\u901a\u7528\u7684\u6280\u672f\u6807\u51c6\uff0c\u4e0d\u662f\u4e3a\u4e86\u9002\u5e94\u901a\u4fe1\u6a21\u5f0f\u800c\u201c\u968f\u610f\u201d\u8bbe\u5b9a\u7684\u3002\u5176\u6839\u672c\u539f\u56e0\u8fd8\u662f\u7269\u7406\u4e0a\u7684\u2014\u2014\u73af\u5883\u566a\u58f0\u6c34\u5e73\u7684\u5dee\u5f02\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u8fd9\u9053\u9898\u8003\u5bdf\u7684\u77e5\u8bc6\u70b9\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u63a5\u6536\u673a\u7075\u654f\u5ea6\u7684\u5b9e\u9645\u9650\u5236\u56e0\u7d20\uff1a \u7406\u89e3\u5b9e\u9645\u53ef\u7528\u7684\u7075\u654f\u5ea6\u4e0d\u4ec5\u53d6\u51b3\u4e8e\u63a5\u6536\u673a\u672c\u8eab\u7684\u566a\u58f0\u7cfb\u6570\uff0c\u66f4\u53d7\u5236\u4e8e\u5916\u90e8\u73af\u5883\u566a\u58f0\u6c34\u5e73\u3002<\/li>\n\n\n\n<li>\u7535\u78c1\u6ce2\u6bb5\u7684\u566a\u58f0\u7279\u6027\uff1a \u4e86\u89e3\u4e0d\u540c\u9891\u6bb5\uff08\u5982HF\u548cVHF\/UHF\uff09\u7684\u5178\u578b\u80cc\u666f\u566a\u58f0\u6765\u6e90\u548c\u5f3a\u5ea6\u5dee\u5f02\u3002<\/li>\n\n\n\n<li>S\u8868\u523b\u5ea6\u7684\u7269\u7406\u610f\u4e49\uff1a \u7406\u89e3S1\u4ee3\u8868\u7684\u662f\u201c\u5728\u5178\u578b\u6761\u4ef6\u4e0b\u521a\u53ef\u88ab\u8fa8\u8bc6\u7684\u4fe1\u53f7\u5f3a\u5ea6\u201d\uff0c\u5b83\u662f\u4e00\u4e2a\u517c\u987e\u4e86\u7406\u8bba\u4e0e\u5b9e\u9645\u4f7f\u7528\u573a\u666f\u7684\u5de5\u7a0b\u5b9a\u4e49\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e1a\u4f59\u65e0\u7ebf\u7535\u6536\u53d1\u4fe1\u673a\u7684\u63a5\u6536\u673a\u7075\u654f\u5ea6\u6307\u6807\u6bd4\u8f83<\/h2>\n\n\n\n<p>MC1-0868:\u7532\u4e59\u4e24\u79cd\u578b\u53f7\u7684\u4e1a\u4f59\u65e0\u7ebf\u7535\u6536\u53d1\u4fe1\u673a\u5728\u6280\u672f\u89c4\u683c\u4e2d\u7ed9\u51fa\u7684\u63a5\u6536\u673a\u7075\u654f\u5ea6\u6307\u6807\u5206\u522b\u4e3a0.1\u03bcV\u548c0.15\u03bcV.\u5173\u4e8e\u8be5\u6307\u6807\uff0c\u6b63\u786e\u7684\u63a8\u8bba\u662f:[T]A<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]\u65e0\u6cd5\u6bd4\u8f83\u4e8c\u8005\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\uff0c\u6d4b\u91cf\u7075\u654f\u5ea6\u65f6\u6240\u7528\u7684\u8f93\u51fa\u4fe1\u53f7\u8d28\u91cf\u6807\u51c6\u672a\u77e5<\/li>\n\n\n\n<li>[B]\u53ef\u4ee5\u63a8\u65ad\u7532\u673a\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\u6bd4\u4e59\u673a\u7684\u5dee\uff0c\u56e0\u4e3a\u7075\u654f\u5ea6\u6307\u6807\u7684\u6570\u503c\u8f83\u5c0f<\/li>\n\n\n\n<li>[C]\u53ef\u4ee5\u63a8\u65ad\u7532\u673a\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\u6bd4\u4e59\u673a\u7684\u9ad8\uff0c\u56e0\u4e3a\u53ef\u4ee5\u63a5\u6536\u7684\u4fe1\u53f7\u66f4\u5fae\u5f31<\/li>\n\n\n\n<li>[D]\u53ef\u4ee5\u63a8\u65ad\u7532\u673a\u627f\u53d7\u5f3a\u4fe1\u53f7\u7684\u80fd\u529b\u6bd4\u4e59\u673a\u7684\u4f4e\uff0c\u56e0\u4e3a\u5176\u7075\u654f\u5ea6\u6570\u503c\u6bd4\u8f83\u5c0f<\/li>\n<\/ul>\n\n\n\n<p>\u7075\u654f\u5ea6\u6307\u6807\u8868\u793a\u63a5\u6536\u673a\u80fd\u591f\u68c0\u6d4b\u5230\u7684\u6700\u5c0f\u4fe1\u53f7\u5f3a\u5ea6\uff0c\u6570\u503c\u8d8a\u5c0f\uff08\u59820.1\u03bcV\uff09\uff0c\u7075\u654f\u5ea6\u8d8a\u9ad8\uff0c\u610f\u5473\u7740\u63a5\u6536\u673a\u80fd\u591f\u63a5\u6536\u66f4\u5fae\u5f31\u7684\u4fe1\u53f7<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u9009\u9879A\u6b63\u786e\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7075\u654f\u5ea6\u6d4b\u91cf\u7684\u4f9d\u8d56\u6027\uff1a\u63a5\u6536\u673a\u7075\u654f\u5ea6\u6307\u6807\uff08\u59820.1\u03bcV\u62160.15\u03bcV\uff09\u901a\u5e38\u662f\u5728\u7279\u5b9a\u8f93\u51fa\u4fe1\u53f7\u8d28\u91cf\u6807\u51c6\u4e0b\u6d4b\u5f97\u7684\uff0c\u4f8b\u5982\u4fe1\u7eb3\u6bd4\uff08SINAD\uff09\u3001\u4fe1\u566a\u6bd4\uff08SNR\uff09\u6216\u5931\u771f\u5ea6\u3002\u8fd9\u4e9b\u6807\u51c6\u5b9a\u4e49\u4e86\u63a5\u6536\u673a\u8f93\u51fa\u4fe1\u53f7\u7684\u53ef\u63a5\u53d7\u8d28\u91cf\u6c34\u5e73\u3002\u5982\u679c\u7532\u673a\u548c\u4e59\u673a\u6d4b\u91cf\u7075\u654f\u5ea6\u65f6\u4f7f\u7528\u7684\u6807\u51c6\u4e0d\u540c\uff08\u4f8b\u5982\uff0c\u7532\u673a\u4f7f\u7528SINAD 12dB\uff0c\u800c\u4e59\u673a\u4f7f\u7528SINAD 6dB\uff09\uff0c\u90a3\u4e48\u76f4\u63a5\u6bd4\u8f83\u6570\u503c\uff080.1\u03bcV vs. 0.15\u03bcV\uff09\u5c31\u4f1a\u8bef\u5bfc\uff0c\u56e0\u4e3a\u6570\u503c\u8f83\u5c0f\u7684\u63a5\u6536\u673a\u4e0d\u4e00\u5b9a\u66f4\u7075\u654f\u3002<\/li>\n\n\n\n<li>\u9898\u76ee\u4e2d\u7f3a\u4e4f\u6d4b\u91cf\u6807\u51c6\uff1a\u9898\u76ee\u4e2d\u53ea\u63d0\u4f9b\u4e86\u7075\u654f\u5ea6\u6570\u503c\uff080.1\u03bcV\u548c0.15\u03bcV\uff09\uff0c\u4f46\u6ca1\u6709\u8bf4\u660e\u6d4b\u91cf\u65f6\u6240\u7528\u7684\u8f93\u51fa\u4fe1\u53f7\u8d28\u91cf\u6807\u51c6\uff08\u5982SINAD\u503c\uff09\u3002\u56e0\u6b64\uff0c\u6211\u4eec\u65e0\u6cd5\u786e\u5b9a\u8fd9\u4e24\u4e2a\u6570\u503c\u662f\u5426\u5728\u76f8\u540c\u6761\u4ef6\u4e0b\u6d4b\u5f97\uff0c\u4ece\u800c\u65e0\u6cd5\u53ef\u9760\u6bd4\u8f83\u5b83\u4eec\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\u3002<\/li>\n\n\n\n<li>\u4e1a\u4f59\u65e0\u7ebf\u7535\u5b9e\u8df5\uff1a\u5728\u4e1a\u4f59\u65e0\u7ebf\u7535\u6280\u672f\u89c4\u8303\u4e2d\uff0c\u7075\u654f\u5ea6\u6307\u6807\u901a\u5e38\u9700\u8981\u6ce8\u660e\u6d4b\u91cf\u6761\u4ef6\u3002\u5982\u679c\u6ca1\u6709\u8fd9\u4e9b\u4fe1\u606f\uff0c\u76f4\u63a5\u6bd4\u8f83\u5c31\u50cf\u6bd4\u8f83\u82f9\u679c\u548c\u6a58\u5b50\u2014\u2014\u53ef\u80fd\u5f97\u51fa\u9519\u8bef\u7ed3\u8bba\u3002\u9009\u9879A\u51c6\u786e\u5730\u6307\u51fa\u4e86\u8fd9\u4e00\u70b9\uff1a\u201c\u65e0\u6cd5\u6bd4\u8f83\u4e8c\u8005\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\uff0c\u6d4b\u91cf\u7075\u654f\u5ea6\u65f6\u6240\u7528\u7684\u8f93\u51fa\u4fe1\u53f7\u8d28\u91cf\u6807\u51c6\u672a\u77e5\u201d\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e3a\u4ec0\u4e48\u5176\u4ed6\u9009\u9879\u4e0d\u6b63\u786e\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[B] \u53ef\u4ee5\u63a8\u65ad\u7532\u673a\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\u6bd4\u4e59\u673a\u7684\u5dee\uff0c\u56e0\u4e3a\u7075\u654f\u5ea6\u6307\u6807\u7684\u6570\u503c\u8f83\u5c0f\u9519\u8bef\u3002\u5982\u679c\u6d4b\u91cf\u6807\u51c6\u76f8\u540c\uff0c\u7075\u654f\u5ea6\u6570\u503c\u8f83\u5c0f\uff08\u59820.1\u03bcV\uff09\u901a\u5e38\u8868\u793a\u63a5\u6536\u80fd\u529b\u66f4\u5f3a\uff08\u800c\u4e0d\u662f\u66f4\u5dee\uff09\uff0c\u4f46\u8fd9\u91cc\u6807\u51c6\u672a\u77e5\uff0c\u6240\u4ee5\u4e0d\u80fd\u63a8\u65ad\u3002<\/li>\n\n\n\n<li>[C] \u53ef\u4ee5\u63a8\u65ad\u7532\u673a\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\u6bd4\u4e59\u673a\u7684\u9ad8\uff0c\u56e0\u4e3a\u53ef\u4ee5\u63a5\u6536\u7684\u4fe1\u53f7\u66f4\u5fae\u5f31\u9519\u8bef\u3002\u540c\u6837\uff0c\u5982\u679c\u6d4b\u91cf\u6807\u51c6\u672a\u77e5\uff0c\u6211\u4eec\u4e0d\u80fd\u76f4\u63a5\u63a8\u65ad\u7532\u673a\u66f4\u7075\u654f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u7532\u673a\u76840.1\u03bcV\u662f\u5728\u8f83\u4f4e\u4fe1\u7eb3\u6bd4\u4e0b\u6d4b\u5f97\u7684\uff0c\u800c\u4e59\u673a\u76840.15\u03bcV\u662f\u5728\u8f83\u9ad8\u4fe1\u7eb3\u6bd4\u4e0b\u6d4b\u5f97\u7684\uff0c\u4e59\u673a\u53ef\u80fd\u5b9e\u9645\u4e0a\u66f4\u7075\u654f\u3002<\/li>\n\n\n\n<li>[D] \u53ef\u4ee5\u63a8\u65ad\u7532\u673a\u627f\u53d7\u5f3a\u4fe1\u53f7\u7684\u80fd\u529b\u6bd4\u4e59\u673a\u7684\u4f4e\uff0c\u56e0\u4e3a\u5176\u7075\u654f\u5ea6\u6570\u503c\u6bd4\u8f83\u5c0f\u9519\u8bef\u3002\u7075\u654f\u5ea6\u6307\u6807\u53ea\u6d89\u53ca\u63a5\u6536\u5fae\u5f31\u4fe1\u53f7\u7684\u80fd\u529b\uff0c\u4e0e\u627f\u53d7\u5f3a\u4fe1\u53f7\u7684\u80fd\u529b\uff08\u5982\u52a8\u6001\u8303\u56f4\u6216\u963b\u585e\u7279\u6027\uff09\u65e0\u5173\u3002\u540e\u8005\u7531\u5176\u4ed6\u53c2\u6570\uff08\u5982\u4e09\u9636\u62e6\u622a\u70b9IP3\uff09\u63cf\u8ff0\uff0c\u4e0d\u80fd\u4ece\u7075\u654f\u5ea6\u6570\u503c\u63a8\u65ad\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5173\u952e\u70b9\uff1a\u5728\u6bd4\u8f83\u63a5\u6536\u673a\u7075\u654f\u5ea6\u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u6d4b\u91cf\u6807\u51c6\u4e00\u81f4\u3002\u9898\u76ee\u4e2d\u672a\u63d0\u4f9b\u8fd9\u4e9b\u4fe1\u606f\uff0c\u56e0\u6b64\u9009\u9879A\u662f\u6700\u4e25\u8c28\u548c\u6b63\u786e\u7684\u3002<\/li>\n\n\n\n<li>\u5b66\u4e60\u5efa\u8bae\uff1a\u5728\u4e1a\u4f59\u65e0\u7ebf\u7535\u8003\u8bd5\u4e2d\uff0c\u9047\u5230\u7075\u654f\u5ea6\u6bd4\u8f83\u9898\u65f6\uff0c\u9996\u5148\u68c0\u67e5\u662f\u5426\u63d0\u5230\u4e86\u6d4b\u91cf\u6761\u4ef6\uff08\u5982SINAD\uff09\u3002\u5982\u679c\u6ca1\u6709\uff0c\u901a\u5e38\u5e94\u9009\u62e9\u201c\u65e0\u6cd5\u6bd4\u8f83\u201d\u7c7b\u9009\u9879\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u65e0\u7ebf\u7535\u63a5\u6536\u673a\u7075\u654f\u5ea6\u7684\u8868\u793a\u65b9\u5f0f<\/h2>\n\n\n\n<p><strong><em>\u4e3b\u8981\u901a\u8fc7\u6539\u53d8\u8f93\u5165\u7535\u538b\u503c\uff08\u59821\u03bcV\u30010.5\u03bcV\u30012\u03bcV\u7b49\uff09\u6765\u6d4b\u8bd5<\/em><\/strong><\/p>\n\n\n\n<p>\u7075\u654f\u5ea6\u7684\u5b9a\u4e49\uff1a\u63a5\u6536\u673a\u7075\u654f\u5ea6\u662f\u6307\u5728\u6ee1\u8db3\u8f93\u51fa\u4fe1\u53f7\u8d28\u91cf\u6807\u51c6\u65f6\uff0c\u5929\u7ebf\u8f93\u5165\u7aef\u53e3\u6240\u9700\u7684\u6700\u5c0f\u8f93\u5165\u7535\u538b\u6216\u529f\u7387\u3002\u901a\u5e38\u7528\u7535\u538b\uff08\u03bcV\uff09\u6216\u529f\u7387\uff08dBm\u3001dB\u03bcV\uff09\u8868\u793a\u3002\u7535\u538b\u4e0e\u529f\u7387\u7684\u8f6c\u6362\uff1a\u572850\u6b27\u59c6\u963b\u6297\u7cfb\u7edf\u4e2d\uff0c\u7535\u538b\u548c\u529f\u7387\u53ef\u4ee5\u901a\u8fc7\u516c\u5f0f\u76f8\u4e92\u8f6c\u6362\u3002\u8fd9\u662f\u9898\u76ee\u8003\u67e5\u7684\u6838\u5fc3\uff0c\u6d89\u53ca\u7ebf\u6027\u5355\u4f4d\uff08\u03bcV\uff09\u548c\u5bf9\u6570\u5355\u4f4d\uff08dBm\u3001dB\u03bcV\uff09\u4e4b\u95f4\u7684\u8ba1\u7b97\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8f6c\u6362\u516c\u5f0f\uff1a<\/h3>\n\n\n\n<p><strong><em>\u7535\u538b\u8f6c\u529f\u7387\uff08dBm\uff09<\/em><\/strong>\uff1a\u7ed9\u5b9a\u7535\u538b V\uff08\u5355\u4f4d\uff1a\u03bcV\uff09\uff0c\u529f\u7387 P\uff08\u5355\u4f4d\uff1adBm\uff09\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<strong><em>P<sub>dBm<\/sub>=20log<sub>10<\/sub>(V<sub>\u03bcV<\/sub>)- 107<\/em><\/strong>\uff0c\u8fd9\u4e2a\u516c\u5f0f\u6e90\u4e8e\u529f\u7387\u8ba1\u7b97 <strong><em>P = V<sup>2<\/sup>\/R<\/em><\/strong>\uff08\u5176\u4e2d R = 50Omega\uff09\uff0c\u5e76\u8f6c\u6362\u4e3a\u4ee51mW\u4e3a\u53c2\u8003\u7684dBm\u5355\u4f4d\uff0c<em><strong>\u7535\u538b\u8f6c\u7535\u538b\u7535\u5e73\uff08dB\u03bcV\uff09<\/strong><\/em>\uff1a\u7535\u538b V\uff08\u5355\u4f4d\uff1a\u03bcV\uff09\u8f6c\u6362\u4e3adB\u03bcV\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<strong><em>V<sub>dB\u03bcV<\/sub>= 20log<sub>10<\/sub>(V<sub>\u03bcV<\/sub>)<\/em><\/strong>\uff0cdB\u03bcV\u662f\u4ee51\u03bcV\u4e3a\u53c2\u8003\u7684\u7535\u538b\u5355\u4f4d\u3002<strong><em>\u5173\u7cfb<\/em><\/strong>\uff1a\u4ece\u4e0a\u8ff0\u516c\u5f0f\u53ef\u5f97\uff0c<strong><em>P<sub>dBm<\/sub>=20log<sub>10<\/sub>(V<sub>\u03bcV<\/sub>)- 107<\/em><\/strong>\u3002\u8fd9\u610f\u5473\u7740\u53ea\u8981\u77e5\u9053\u7535\u538b in dB\u03bcV\uff0c\u5c31\u80fd\u76f4\u63a5\u5f97\u5230\u529f\u7387 in dBm\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u8bbe\u8ba1\u6a21\u5f0f\uff1a\u6240\u6709\u9898\u76ee\u90fd\u57fa\u4e8e\u76f8\u540c\u7684\u7ed3\u6784\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7ed9\u5b9a\u8f93\u5165\u963b\u629750\u6b27\u59c6\u548c\u6700\u5c0f\u8f93\u5165\u7535\u538b\uff08\u59821\u03bcV\u62160.5\u03bcV\uff09\u3002<\/li>\n\n\n\n<li>\u8981\u6c42\u7528\u4e0d\u540c\u5355\u4f4d\u8868\u793a\u7075\u654f\u5ea6\uff1a\u7535\u538b\uff08\u03bcV\uff09\u3001\u529f\u7387\uff08dBm\uff09\u6216\u7535\u538b\u7535\u5e73\uff08dB\u03bcV\uff09\u3002<\/li>\n\n\n\n<li>\u901a\u8fc7\u6539\u53d8\u7535\u538b\u503c\uff0c\u6d4b\u8bd5\u8003\u751f\u662f\u5426\u638c\u63e1\u8f6c\u6362\u516c\u5f0f\u3002\u4f8b\u5982\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5f53\u7535\u538b\u4e3a1\u03bcV\u65f6\uff0c\u7075\u654f\u5ea6\u5728\u03bcV\u5355\u4f4d\u4e0b\u662f1\u03bcV\uff0c\u5728dB\u03bcV\u5355\u4f4d\u4e0b\u662f0 dB\u03bcV\uff0c\u5728dBm\u5355\u4f4d\u4e0b\u662f-107 dBm\u3002<\/li>\n\n\n\n<li>\u5f53\u7535\u538b\u4e3a0.5\u03bcV\u65f6\uff0c\u7075\u654f\u5ea6\u5728\u03bcV\u5355\u4f4d\u4e0b\u662f0.5\u03bcV\uff0c\u5728dB\u03bcV\u5355\u4f4d\u4e0b\u662f-6 dB\u03bcV\uff0c\u5728dBm\u5355\u4f4d\u4e0b\u662f-113 dBm\u3002<\/li>\n\n\n\n<li>\u5f53\u7535\u538b\u4e3a2\u03bcV\u65f6\uff0c\u7075\u654f\u5ea6\u5728\u03bcV\u5355\u4f4d\u4e0b\u662f2\u03bcV\uff0c\u5728dB\u03bcV\u5355\u4f4d\u4e0b\u662f6 dB\u03bcV\uff0c\u5728dBm\u5355\u4f4d\u4e0b\u662f-101 dBm\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u9898\u76ee\u4e3e\u4f8b\u5206\u6790<\/h3>\n\n\n\n<p>MC1-0869\u5f53\u8f93\u51fa\u4fe1\u53f7\u6ee1\u8db3\u89c4\u5b9a\u8d28\u91cf\u6807\u51c6\u65f6,\u5728\u8f93\u5165\u963b\u6297\u4e3a50\u6b27\u7684\u67d0\u63a5\u6536\u673a\u5929\u7ebf\u8f93\u4eba\u7aef\u53e3\u5904\u6d4b\u5f97\u7684\u8f93\u4eba\u4fe1\u53f7\u6700\u5c0f\u7535\u538b\u4e3a1\u03bcV.\u5982\u679c\u7528\u7535\u538b\u7535\u5e73uV\u8868\u793a\u8be5\u673a\u7684\u7075\u654f\u5ea6\uff0c\u5219\u4e3a:[A]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]2 \u03bc V<\/li>\n\n\n\n<li>[B]1 \u03bcV<\/li>\n\n\n\n<li>[C]50 \u03bc V<\/li>\n\n\n\n<li>[D]0.5 \u03bc V<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7406\u89e3\u7075\u654f\u5ea6\u7684\u5b9a\u4e49\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5728\u65e0\u7ebf\u7535\u63a5\u6536\u673a\u4e2d\uff0c\u7075\u654f\u5ea6\u901a\u5e38\u5b9a\u4e49\u4e3a\u5728\u8f93\u51fa\u4fe1\u53f7\u6ee1\u8db3\u4e00\u5b9a\u8d28\u91cf\u6807\u51c6\uff08\u5982\u4fe1\u566a\u6bd4\uff09\u65f6\uff0c\u5929\u7ebf\u8f93\u5165\u7aef\u6240\u9700\u7684\u6700\u5c0f\u8f93\u5165\u4fe1\u53f7\u7535\u5e73\u3002\u8fd9\u4e2a\u7535\u5e73\u53ef\u4ee5\u7528\u7535\u538b\uff08\u5982\u03bcV\uff09\u6216\u529f\u7387\uff08\u5982dBm\uff09\u8868\u793a\u3002<\/li>\n\n\n\n<li>\u672c\u9898\u6307\u5b9a\u7528\u201c\u7535\u538b\u7535\u5e73\u03bcV\u201d\u8868\u793a\u7075\u654f\u5ea6\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u5728\u5de5\u7a0b\u5b9e\u8df5\u4e2d\uff0c\u7075\u654f\u5ea6\u6709\u65f6\u7528\u6e90\u7535\u52a8\u52bf\uff08open-circuit voltage\uff09\u8868\u793a\uff0c\u800c\u4e0d\u662f\u7aef\u53e3\u7535\u538b\uff08terminal voltage\uff09\u3002\u5f53\u8f93\u5165\u963b\u6297\u5339\u914d\u65f6\uff0c\u6e90\u7535\u52a8\u52bf\u662f\u7aef\u53e3\u7535\u538b\u7684\u4e24\u500d\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5206\u6790\u7ed9\u5b9a\u6761\u4ef6\uff1a\n<ul class=\"wp-block-list\">\n<li>\u6d4b\u5f97\u7684\u6700\u5c0f\u8f93\u5165\u7535\u538b\u4e3a1\u03bcV\uff0c\u8fd9\u662f\u5728\u8f93\u5165\u7aef\u53e3\u5904\u6d4b\u91cf\u7684\u7535\u538b\uff0c\u5373\u7aef\u53e3\u7535\u538b\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u7075\u654f\u5ea6\u7528\u6e90\u7535\u52a8\u52bf\u8868\u793a\uff0c\u5219\u6e90\u7535\u52a8\u52bf = 2 \u00d7 \u7aef\u53e3\u7535\u538b = 2 \u00d7 1\u03bcV = 2\u03bcV\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u7528\u7535\u538b\u7535\u5e73\u03bcV\u8868\u793a\u7684\u7075\u654f\u5ea6\u5e94\u4e3a2\u03bcV\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5339\u914d\u9009\u9879\uff1a\n<ul class=\"wp-block-list\">\n<li>\u9009\u9879 [A] 2\u03bcV \u5bf9\u5e94\u6e90\u7535\u52a8\u52bf\u8868\u793a\u7684\u7075\u654f\u5ea6\u3002<\/li>\n\n\n\n<li>\u9009\u9879 [B] 1\u03bcV \u662f\u6d4b\u5f97\u7684\u7aef\u53e3\u7535\u538b\uff0c\u4f46\u4e0d\u7b26\u5408\u7075\u654f\u5ea6\u4f5c\u4e3a\u6e90\u7535\u52a8\u52bf\u7684\u5b9a\u4e49\u3002<\/li>\n\n\n\n<li>\u9009\u9879 [C] 50\u03bcV \u548c [D] 0.5\u03bcV \u4e0e\u8ba1\u7b97\u4e0d\u7b26\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>\u4e3a\u4ec0\u4e48\u4e0d\u662f1\u03bcV\uff1f\u56e0\u4e3a\u9898\u76ee\u4e2d\u201c\u6d4b\u5f97\u7684\u8f93\u5165\u4fe1\u53f7\u6700\u5c0f\u7535\u538b\u201d\u662f\u7aef\u53e3\u7535\u538b\uff0c\u800c\u201c\u7535\u538b\u7535\u5e73\u201d\u8868\u793a\u7075\u654f\u5ea6\u65f6\u901a\u5e38\u6307\u6e90\u7535\u52a8\u52bf\u3002<strong>\u5728\u963b\u6297\u5339\u914d\u6761\u4ef6\u4e0b\uff0c\u6e90\u7535\u52a8\u52bf\u662f\u7aef\u53e3\u7535\u538b\u7684\u4e24\u500d\u3002<\/strong><\/p>\n\n\n\n<p>MC1-0870\u5f53\u8f93\u51fa\u4fe1\u53f7\u6ee1\u8db3\u89c4\u5b9a\u8d28\u91cf\u6807\u51c6\u65f6,\u5728\u8f93\u4eba\u963b\u6297\u4e3a50\u6b27\u7684\u67d0\u63a5\u6536\u673a\u5929\u7ebf\u8f93\u4eba\u7aef\u53e3\u5904\u6d4b\u5f97\u7684\u8f93\u4eba\u4fe1\u53f7\u6700\u5c0f\u7535\u538b\u4e3a1\u03bcV\u3001\u5982\u679c\u7528\u529f\u7387\u7535\u5e73dBm\u8868\u793a\u8be5\u673a\u7684\u7075\u654f\u5ea6\uff0c\u5219\u4e3a:[T]A<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]-107dBm<\/li>\n\n\n\n<li>[B]-103dBm<\/li>\n\n\n\n<li>[C]-73dBm<\/li>\n\n\n\n<li>[D]-113dBm<\/li>\n<\/ul>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7ed9\u5b9a\u53c2\u6570\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8f93\u5165\u7535\u538b V = 1 \u03bcV= 1 x10^-6 V<\/li>\n\n\n\n<li>\u8f93\u5165\u963b\u6297 R = 50 Omega<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8ba1\u7b97\u529f\u7387\uff08\u5355\u4f4d\uff1a\u74e6\u7279 W\uff09\uff1a\n<ul class=\"wp-block-list\">\n<li>\u529f\u7387\u516c\u5f0f\uff1a P =V^2\/R<\/li>\n\n\n\n<li>\u4ee3\u5165\u503c\uff1a P = (1&#215;10<sup>-6<\/sup>)<sup>2<\/sup>\/50=1&#215;10<sup>-12<\/sup>\/50=2&#215;10<sup>-14<\/sup>w<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5c06\u529f\u7387\u8f6c\u6362\u4e3a\u6beb\u74e6\uff08mW\uff09\uff1a\n<ul class=\"wp-block-list\">\n<li>\u56e0\u4e3a 1 mW= 10^-3W}\uff0c\u6240\u4ee5\uff1aPmW = P\/10^-3= 2 x10^-14\/10^-3 = 2 x 10^-11mW<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u8ba1\u7b97\u529f\u7387\u7535\u5e73 dBm\uff1a\n<ul class=\"wp-block-list\">\n<li>dBm \u7684\u5b9a\u4e49\uff1a<strong><em> P<sub>dBm<\/sub>= 10 xlog<sub>10<\/sub>(P<sub>mW<\/sub>)<\/em><\/strong><\/li>\n\n\n\n<li>\u4ee3\u5165\u503c\uff1a<strong><em> P<sub>dBm<\/sub>= 10 xlog<sub>10<\/sub>(P<sub>mW<\/sub>)<\/em><\/strong>=10xlog<sub>10<\/sub>(2&#215;10<sup>-11<\/sup>)=-106.99dBm<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u4e3a -107 dBm\uff0c\u4e0e\u9009\u9879 A \u4e00\u81f4\u3002<\/li>\n\n\n\n<li>\u4e3a\u4ec0\u4e48\u5176\u4ed6\u9009\u9879\u4e0d\u6b63\u786e\uff1f\n<ul class=\"wp-block-list\">\n<li>[B] -103dBm\uff1a\u8ba1\u7b97\u7ed3\u679c\u504f\u9ad8\uff0c\u53ef\u80fd\u6e90\u4e8e\u963b\u6297\u6216\u7535\u538b\u8ba1\u7b97\u9519\u8bef\u3002<\/li>\n\n\n\n<li>[C] -73dBm\uff1a\u8fdc\u9ad8\u4e8e\u6b63\u786e\u503c\uff0c\u53ef\u80fd\u8bef\u7528\u4e86\u7535\u538b\u5355\u4f4d\uff08\u5982\u5c06 \u03bcV \u5f53\u4f5c mV\uff09\u3002<\/li>\n\n\n\n<li>[D] -113dBm\uff1a\u8ba1\u7b97\u7ed3\u679c\u504f\u4f4e\uff0c\u53ef\u80fd\u5ffd\u7565\u4e86\u963b\u6297\u6216\u8ba1\u7b97\u4e2d\u7684\u7cfb\u6570\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<p>MC1-0871\u5f53\u8f93\u51fa\u4fe1\u53f7\u6ee1\u8db3\u89c4\u5b9a\u8d28\u91cf\u6807\u51c6\u65f6,\u5728\u8f93\u4eba\u963b\u6297\u4e3a50\u6b27\u7684\u67d0\u63a5\u6536\u673a\u5929\u7ebf\u8f93\u5165\u7aef\u53e3\u5904\u6d4b\u5f97\u7684\u8f93\u4eba\u4fe1\u53f7\u6700\u5c0f\u7535\u538b\u4e3a1\u03bcV\u3002\u5982\u679c\u7528\u7535\u538b\u7535\u5e73 dBuV\u8868\u793a\u8be5\u673a\u7684\u7075\u654f\u5ea6\uff0c\u5219\u4e3a:[A]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]6dB \u03bc V<\/li>\n\n\n\n<li>[B]-2dB \u03bc V<\/li>\n\n\n\n<li>[C]3dB \u03bc V<\/li>\n\n\n\n<li>[D0dB \u03bc V<\/li>\n<\/ul>\n\n\n\n<p>\u5728\u4e8e\u63a5\u6536\u673a\u7075\u654f\u5ea6\u7684\u5b9a\u4e49\u548c\u6d4b\u91cf\u4e2d\uff0c\u7535\u538b\u7684\u53c2\u8003\u70b9\u53ef\u80fd\u4e0d\u540c\uff1a\u9898\u76ee\u4e2d\u201c\u5728\u5929\u7ebf\u8f93\u5165\u7aef\u53e3\u5904\u6d4b\u5f97\u7684\u8f93\u5165\u4fe1\u53f7\u6700\u5c0f\u7535\u538b\u4e3a1\u03bcV\u201d\u901a\u5e38\u6307\u7684\u662f\u7aef\u7535\u538b\uff08terminal voltage\uff09\uff0c\u4f46\u7075\u654f\u5ea6\u8ba1\u7b97\u4e2d\u4f7f\u7528\u7684\u7535\u538b\u53ef\u80fd\u662f\u4fe1\u53f7\u6e90\u7684\u7535\u52a8\u52bf\uff08EMF\uff0c\u5373\u5f00\u8def\u7535\u538b\uff09\uff0c\u800c\u4e0d\u662f\u7aef\u7535\u538b\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u5206\u6790\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7aef\u7535\u538b\u4e0e\u7535\u52a8\u52bf\u7684\u5173\u7cfb\n<ul class=\"wp-block-list\">\n<li>\u5728\u5c04\u9891\u5de5\u7a0b\u4e2d\uff0c\u5f53\u63a5\u6536\u673a\u5929\u7ebf\u8f93\u5165\u963b\u6297\u4e0e\u4fe1\u53f7\u6e90\u963b\u6297\u5339\u914d\u65f6\uff08\u5982\u5747\u4e3a50\u6b27\uff09\uff0c\u4fe1\u53f7\u6e90\u8fde\u63a5\u5230\u63a5\u6536\u673a\u540e\uff0c\u63a5\u6536\u673a\u8f93\u5165\u7aef\u53e3\u7684\u5b9e\u9645\u7535\u538b\uff08\u7aef\u7535\u538b\uff09\u662f\u4fe1\u53f7\u6e90\u7535\u52a8\u52bf\uff08EMF\uff09\u7684\u4e00\u534a\u3002<\/li>\n\n\n\n<li>\u5177\u4f53\u516c\u5f0f\uff1a\u5982\u679c\u4fe1\u53f7\u6e90\u7535\u52a8\u52bf\u4e3a <em><strong>V<sub>emf<\/sub><\/strong><\/em>\uff0c\u5219\u7aef\u7535\u538b <strong><em>V<sub>terminal <\/sub>= V<sub>emf<\/sub>\/2 <\/em><\/strong>\uff08\u5728\u963b\u6297\u5339\u914d\u6761\u4ef6\u4e0b\uff09\u3002<\/li>\n\n\n\n<li>\u9898\u76ee\u4e2d\u6d4b\u5f97\u7684\u6700\u5c0f\u7535\u538b\u4e3a1\u03bcV\u662f\u7aef\u7535\u538b\uff0c\u56e0\u6b64\u4fe1\u53f7\u6e90\u7684\u7535\u52a8\u52bf\u5e94\u4e3a\uff1a<em><strong>V<sub>emf<\/sub><\/strong><\/em> = 2 x <strong><em>V<sub>terminal <\/sub><\/em><\/strong>= 2 x1 \u03bcV = 2 \u03bcV <\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7075\u654f\u5ea6\u5728dB\u03bcV\u4e2d\u7684\u8ba1\u7b97\n<ul class=\"wp-block-list\">\n<li>\u7535\u538b\u7535\u5e73\uff08dB\u03bcV\uff09\u7684\u5b9a\u4e49\u4e3a\uff1a<strong><em>L<sub>dB\u03bcV<\/sub> = 20log<sub>10<\/sub>(V\/ 1\u03bcV )<\/em><\/strong>\u5176\u4e2d V \u662f\u4ee5\u5fae\u4f0f\u4e3a\u5355\u4f4d\u7684\u7535\u538b\u503c\u3002<\/li>\n\n\n\n<li>\u5728\u63a5\u6536\u673a\u7075\u654f\u5ea6\u6807\u51c6\u4e2d\uff0c\u6709\u65f6\u4f7f\u7528\u4fe1\u53f7\u6e90\u7684\u7535\u52a8\u52bf\u4f5c\u4e3a V \u6765\u8ba1\u7b97dB\u03bcV\uff0c\u800c\u4e0d\u662f\u7aef\u7535\u538b\u3002\u8fd9\u662f\u56e0\u4e3a\u7535\u52a8\u52bf\u66f4\u76f4\u63a5\u5730\u8868\u793a\u4fe1\u53f7\u6e90\u7684\u5f3a\u5ea6\uff0c\u907f\u514d\u4e86\u963b\u6297\u5339\u914d\u7684\u5f71\u54cd\u3002<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u5982\u679c\u4f7f\u7528\u7535\u52a8\u52bf <em><strong>V<sub>emf<\/sub><\/strong><\/em>= 2 \u03bcV  \u8ba1\u7b97\uff1a<strong><em>L<sub>dB\u03bcV<\/sub> = 20log<sub>10<\/sub>(V\/ 1\u03bcV )<\/em><\/strong>=20&#215;3.01dB\u03bcV,\u8fd9\u6b63\u597d\u5bf9\u5e94\u9009\u9879A<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u4e3a\u4ec0\u4e48\u516c\u5f0f\u4e2d\u7684V\u53ef\u80fd\u662f\u7535\u6e90\u7535\u538b\uff08\u7535\u52a8\u52bf\uff09\n<ul class=\"wp-block-list\">\n<li>\u5728\u63a5\u6536\u673a\u6d4b\u8bd5\u4e2d\uff0c\u4fe1\u53f7\u53d1\u751f\u5668\u901a\u5e38\u8bbe\u7f6e\u5176\u8f93\u51fa\u4e3a\u7535\u52a8\u52bf\uff08\u5f00\u8def\u7535\u538b\uff09\uff0c\u5f53\u8fde\u63a5\u5230\u5339\u914d\u8d1f\u8f7d\u65f6\uff0c\u7aef\u7535\u538b\u4f1a\u51cf\u534a\u3002\u4f46\u7075\u654f\u5ea6\u62a5\u544a\u53ef\u80fd\u57fa\u4e8e\u7535\u52a8\u52bf\uff0c\u4ee5\u786e\u4fdd\u4e00\u81f4\u6027 across different systems\u3002<\/li>\n\n\n\n<li>\u9898\u76ee\u4e2d\u867d\u7136\u63d0\u5230\u201c\u6d4b\u5f97\u7684\u8f93\u5165\u4fe1\u53f7\u6700\u5c0f\u7535\u538b\u4e3a1\u03bcV\u201d\uff0c\u4f46\u8fd9\u53ef\u80fd\u662f\u5728\u63cf\u8ff0\u6d4b\u8bd5\u6761\u4ef6\uff0c\u800c\u7075\u654f\u5ea6\u7684dB\u03bcV\u503c\u5b9e\u9645\u662f\u57fa\u4e8e\u7535\u52a8\u52bf\u8ba1\u7b97\u7684\u3002\u56e0\u6b64\uff0c\u5e26\u5165\u516c\u5f0f\u7684 V \u662f\u7535\u6e90\u7535\u538b\uff08\u5373\u7535\u52a8\u52bf\uff09\uff0c\u800c\u4e0d\u662f\u5929\u7ebf\u7aef\u53e3\u7684\u7aef\u7535\u538b\u3002<\/li>\n\n\n\n<li>\u8fd9\u79cd\u5904\u7406\u5728\u4e00\u4e9b\u8003\u9898\u6216\u6807\u51c6\u4e2d\u5e38\u89c1\uff0c\u4ee5\u907f\u514d\u6df7\u6dc6\u3002\u9009\u9879A\uff086dB\u03bcV\uff09\u662f\u6b63\u786e\u7b54\u6848\uff0c\u8868\u660e\u51fa\u9898\u8005\u610f\u56fe\u4f7f\u7528\u7535\u52a8\u52bf\u4f5c\u4e3a\u53c2\u8003\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u9009\u9879\u5206\u6790\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u76f4\u63a5\u4f7f\u7528\u7aef\u7535\u538b1\u03bcV\u8ba1\u7b97\uff0c\u5219 20 log<sub>10<\/sub>(1) = 0 dB\u03bcV\uff0c\u5bf9\u5e94\u9009\u9879D\uff0c\u4f46\u8fd9\u4e0d\u662f\u6b63\u786e\u7b54\u6848\u3002<\/li>\n\n\n\n<li>\u5176\u4ed6\u9009\u9879\uff1a\n<ul class=\"wp-block-list\">\n<li>B: -2 dB\u03bcV \u2248 0.79 \u03bcV\uff08\u4e0d\u7b26\u5408\uff09<\/li>\n\n\n\n<li>C: 3 dB\u03bcV \u2248 1.41 \u03bcV\uff08\u4e0d\u7b26\u5408\uff09<\/li>\n\n\n\n<li>D: 0 dB\u03bcV = 1 \u03bcV\uff08\u4ec5\u7b26\u5408\u7aef\u7535\u538b\uff0c\u4f46\u4e0d\u7b26\u5408\u7075\u654f\u5ea6\u5b9a\u4e49\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u53ea\u6709A\u9009\u9879\u5339\u914d\u7535\u52a8\u52bf\u4e3a2\u03bcV\u7684\u60c5\u51b5\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u7ed3\u8bba\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u9645\u539f\u7535\u538b\uff08\u5373\u4fe1\u53f7\u6e90\u7535\u52a8\u52bf\uff09\u4e3a2\u03bcV\uff0c\u800c\u516c\u5f0f\u4e2d\u7684 V \u662f\u90a3\u4e2a\u7535\u6e90\u7535\u538b\uff08\u7535\u52a8\u52bf\uff09\uff0c\u800c\u4e0d\u662f\u5929\u7ebf\u8f93\u5165\u7aef\u53e3\u7684\u7aef\u7535\u538b\u3002\u8fd9\u89e3\u91ca\u4e86\u4e3a\u4ec0\u4e48\u7075\u654f\u5ea6\u4e3a6dB\u03bcV\uff0c\u5c3d\u7ba1\u6d4b\u5f97\u7aef\u7535\u538b\u4e3a1\u03bcV\u3002<\/li>\n\n\n\n<li>\u5728\u5b9e\u9645\u5de5\u7a0b\u4e2d\uff0c\u6ce8\u610f\u7075\u654f\u5ea6\u5b9a\u4e49\u7684\u5177\u4f53\u4e0a\u4e0b\u6587\uff0c\u4ee5\u907f\u514d\u8bef\u89e3<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u5173\u4e8e\u63a5\u6536\u673a\u7075\u654f\u5ea6\uff08\u4ee5\u5fae\u4f0f\u4e3a\u5355\u4f4d\uff09\u4e0e\u529f\u7387\u7535\u5e73\uff08\u4ee5dBm\u4e3a\u5355\u4f4d\uff09\u7684\u8f6c\u6362<\/h3>\n\n\n\n<p>\u63a5\u6536\u673a\u7684\u5929\u7ebf\u8f93\u5165\u963b\u6297\u4e3a50\u03a9\u3002\u5728\u8ba1\u7b97\u529f\u7387\u7535\u5e73\u65f6\uff0c\u9700\u8981\u5047\u8bbe\u7075\u654f\u5ea6\u6307\u6807\u662f\u6307\u7535\u52a8\u52bf\uff08EMF\uff09\uff0c\u800c\u4e0d\u662f\u8d1f\u8f7d\u4e24\u7aef\u7684\u7535\u538b\u3002\u5bf9\u4e8e\u5339\u914d\u8d1f\u8f7d\uff0c\u8f93\u5165\u529f\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<strong><em>P=(V<sub>emf<\/sub>)<sup>2<\/sup>\/4R<\/em><\/strong>,\u5176\u4e2d\uff1aR \u662f\u8f93\u5165\u963b\u6297\uff0850\u03a9\uff09,V<sub>emf<\/sub> \u662f\u7075\u654f\u5ea6\u7535\u52a8\u52bf\uff08\u5355\u4f4d\uff1a\u4f0f\u7279\uff09\uff0c\u529f\u7387\u7535\u5e73\u4ee5 dBm \u8868\u793a\uff0c\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<strong><em>dBm=10log<sub>10<\/sub>(P\/1mW)<\/em><\/strong>,\u5c06 P \u4ee3\u5165\u516c\u5f0f\uff0c\u5e76\u7b80\u5316\u540e\uff0c\u5f97\u5230:<strong><em>dBm=20log<sub>10<\/sub>(V<sub>\u03bcV<\/sub>)-113<\/em><\/strong><\/p>\n\n\n\n<p>MC1-0875[Q]\u5df2\u77e5\u67d0\u63a5\u6536\u673a\u7684\u5929\u7ebf\u8f93\u4eba\u963b\u6297\u4e3a500\uff0c\u7075\u654f\u5ea6\u6307\u6807\u4e3a2\u03bcV\uff0c\u5219\u529f\u7387\u7535\u5e73\u76f8\u5e94\u4e3a:[T]A<br><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]-107dBm<\/li>\n\n\n\n<li>[B]0.02dBm<\/li>\n\n\n\n<li>[C]-103dBm<\/li>\n\n\n\n<li>[D]-113dBm<\/li>\n<\/ul>\n\n\n\n<p>\u7b2c\u4e00\u9898\uff1a\u7075\u654f\u5ea6\u4e3a 2\u03bcV<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>V<sub>\u03bcV<\/sub><\/em><\/strong> = 2<\/li>\n\n\n\n<li>\u8ba1\u7b97\uff1a <strong><em>20log<sub>10<\/sub>(2)=<\/em><\/strong> 20&#215;0.3010 = 6.02<\/li>\n\n\n\n<li>dBm = 6.02 &#8211; 113 = -106.98=-107dBm<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u529f\u7387\u7535\u5e73\u4e3a -107dBm\uff0c\u5bf9\u5e94\u9009\u9879 A\u3002<\/li>\n<\/ul>\n\n\n\n<p>MC1-0876<br>[Q]\u5df2\u77e5\u67d0\u63a5\u6536\u673a\u7684\u5929\u7ebf\u8f93\u4eba\u963b\u6297\u4e3a500\uff0c\u7075\u654f\u5ea6\u6307\u6807\u4e3a1uV\uff0c\u5219\u529f\u7387\u7535\u5e73\u76f8\u5e94\u4e3a:[T]A<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>[A]-113dBm<\/li>\n\n\n\n<li>[B]-107dBm<\/li>\n\n\n\n<li>[C]0.01dBm<\/li>\n\n\n\n<li>[D]-103dBm<\/li>\n<\/ul>\n\n\n\n<p>\u7b2c\u4e8c\u9898\uff1a\u7075\u654f\u5ea6\u4e3a 1\u03bcV<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong><em>V<sub>\u03bcV<\/sub><\/em><\/strong> = 1<\/li>\n\n\n\n<li>\u8ba1\u7b97\uff1a <strong><em>20log<sub>10<\/sub>(1)<\/em><\/strong>= 0<\/li>\n\n\n\n<li>dBm = 0 &#8211; 113 = -113=-113dBm<\/li>\n\n\n\n<li>\u56e0\u6b64\uff0c\u529f\u7387\u7535\u5e73\u4e3a -113dBm \uff0c\u5bf9\u5e94\u9009\u9879 A\u3002<\/li>\n<\/ul>\n\n\n\n<p><strong>\u56e0\u6b64\uff0c\u4e24\u9053\u9898\u7684\u6b63\u786e\u7b54\u6848\u90fd\u662f\u9009\u9879 A\u3002\u5728\u8ba1\u7b97\u4e2d\uff0c\u5173\u952e\u70b9\u662f\u7075\u654f\u5ea6\u88ab\u89c6\u4e3a\u7535\u52a8\u52bf\uff0c\u800c\u4e0d\u662f\u8d1f\u8f7d\u7535\u538b\uff0c\u8fd9\u7b26\u5408\u65e0\u7ebf\u7535\u5de5\u7a0b\u4e2d\u7684\u5e38\u89c1\u6807\u51c6\u3002<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u8865\u5145:<strong>\u5728\u963b\u6297\u5339\u914d\u6761\u4ef6\u4e0b\uff0c\u6e90\u7535\u52a8\u52bf\u662f\u7aef\u53e3\u7535\u538b\u7684\u4e24\u500d<\/strong><\/h3>\n\n\n\n<p>\u603b\u7684\u6765\u8bf4\uff0c\u8fd9\u53e5\u8bdd\u662f\u201c\u6709\u6761\u4ef6\u6b63\u786e\u7684\u201d\u3002\u5728\u7edd\u5927\u591a\u6570\u60c5\u51b5\u4e0b\uff0c\u5f53\u4eba\u4eec\u8bf4\u8fd9\u53e5\u8bdd\u65f6\uff0c\u5b83\u63cf\u8ff0\u7684\u662f\u4e00\u4e2a\u4e3a\u4e86\u5b9e\u73b0\u6700\u5927\u529f\u7387\u4f20\u8f93\u800c\u8fdb\u884c\u963b\u6297\u5339\u914d\u7684\u7406\u60f3\u72b6\u6001\u3002\u4e0b\u9762\u8fdb\u884c\u8be6\u7ec6\u89e3\u91ca\uff1a<\/p>\n\n\n\n<p>\u6838\u5fc3\u539f\u7406:\u4fe1\u53f7\u6e90\u6a21\u578b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4efb\u4f55\u4e00\u4e2a\u4fe1\u53f7\u6e90\uff08\u6bd4\u5982\u8fd9\u53f0\u673a\u5668\u7684\u8f93\u51fa\u7aef\u53e3\uff09\uff0c\u90fd\u53ef\u4ee5\u88ab\u7b49\u6548\u4e3a\u4e00\u4e2a\u7406\u60f3\u7684\u7535\u538b\u6e90\uff08\u5176\u7535\u538b\u5373\u4e3a\u7535\u6e90\u7535\u52a8\u52bf E\uff09\u548c\u4e00\u4e2a\u5185\u963b Rs \u4e32\u8054\u3002<\/li>\n\n\n\n<li>\u8d1f\u8f7d\uff1a\u6d4b\u91cf\u65f6\uff0c\u6211\u4eec\u4f1a\u5728\u8f93\u51fa\u7aef\u53e3\u63a5\u4e0a\u4e00\u4e2a\u8d1f\u8f7d\uff08\u901a\u5e38\u662f\u6d4b\u91cf\u4eea\u5668\u7684\u8f93\u5165\u963b\u6297\uff09\uff0c\u8bb0\u4e3a RL\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6574\u4e2a\u56de\u8def\u5c31\u6784\u6210\u4e86\u4e00\u4e2a\u7b80\u5355\u7684\u4e32\u8054\u7535\u8def\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u7aef\u53e3\u7535\u538b\u4f55\u65f6\u662f\u7535\u52a8\u52bf\u76841\/2\uff1f<\/h4>\n\n\n\n<p>\u6839\u636e\u6b27\u59c6\u5b9a\u5f8b\uff0c\u8d1f\u8f7d RL \u4e24\u7aef\u7684\u7535\u538b\uff08\u4e5f\u5c31\u662f\u6240\u8bf4\u7684\u201c\u7aef\u53e3\u7535\u538b\u201d Uo\uff09\u4e3a\uff1a<strong><em>Uo = E * [ RL \/ (Rs + RL) ]<\/em><\/strong>,\u4ece\u8fd9\u4e2a\u516c\u5f0f\u53ef\u4ee5\u770b\u51fa\uff0c\u53ea\u6709\u5f53 Rs = RL \u65f6\uff0c\u5373\u4fe1\u53f7\u6e90\u5185\u963b\u7b49\u4e8e\u8d1f\u8f7d\u7535\u963b\u65f6\uff0c\u7aef\u53e3\u7535\u538b\uff1a<em><strong>Uo = E * [ RL \/ (RL + RL) ] = E * (1\/2) = E \/ 2<\/strong><\/em>,<\/p>\n\n\n\n<p>\u7ed3\u8bba\u4e00\uff1a\u5728\u963b\u6297\u5339\u914d\uff08Rs = RL\uff09\u7684\u6761\u4ef6\u4e0b\uff0c\u7aef\u53e3\u7535\u538b\u6070\u597d\u7b49\u4e8e\u7535\u6e90\u7535\u52a8\u52bf\u7684\u4e00\u534a\u3002 \u8fd9\u662f\u5b9e\u73b0\u6700\u5927\u529f\u7387\u4f20\u8f93\u7684\u5fc5\u8981\u6761\u4ef6\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e0e\u201c\u7075\u654f\u5ea6\u201d\u6d4b\u91cf\u7684\u5173\u7cfb<\/h4>\n\n\n\n<p>\u5728\u6d4b\u91cf\u63a5\u6536\u673a\u3001\u9891\u8c31\u4eea\u3001\u7f51\u7edc\u5206\u6790\u4eea\u7b49\u8bbe\u5907\u7684\u7075\u654f\u5ea6\u65f6\uff0c\u6211\u4eec\u901a\u5e38\u9700\u8981\u4e00\u4e2a\u5df2\u77e5\u5e45\u5ea6\u975e\u5e38\u5c0f\u7684\u4fe1\u53f7\u6765\u6a21\u62df\u5fae\u5f31\u7684\u63a5\u6536\u4fe1\u53f7\u3002\u8fd9\u4e2a\u5fae\u5c0f\u4fe1\u53f7\u901a\u5e38\u7531\u4e00\u4e2a\u6807\u51c6\u4fe1\u53f7\u53d1\u751f\u5668\u63d0\u4f9b<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4fe1\u53f7\u53d1\u751f\u5668\u7684\u8f93\u51fa\u963b\u6297\u901a\u5e38\u662f\u6807\u51c6\u7684 50\u6b27\u59c6\uff08\u5c04\u9891\uff09\u6216 75\u6b27\u59c6\uff08\u89c6\u9891\uff09\u3002<\/li>\n\n\n\n<li>\u88ab\u6d4b\u8bbe\u5907\u7684\u8f93\u5165\u963b\u6297\u4e5f\u901a\u5e38\u88ab\u8bbe\u8ba1\u4e3a\u4e0e\u4e4b\u5339\u914d\u7684 50\u6b27\u59c6 \u6216 75\u6b27\u59c6\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u8fd9\u6837\u8bbe\u8ba1\u7684\u76ee\u7684\u5c31\u662f\u4e3a\u4e86\u5b9e\u73b0\u963b\u6297\u5339\u914d\uff0c\u786e\u4fdd\u4fe1\u53f7\u529f\u7387\u80fd\u6700\u6709\u6548\u3001\u65e0\u53cd\u5c04\u5730\u4f20\u8f93\u5230\u88ab\u6d4b\u8bbe\u5907\u3002\u56e0\u6b64\uff0c\u5728\u521a\u624d\u6240\u8bf4\u7684\u201c\u6d4b\u91cf\u8f93\u51fa\u4fe1\u53f7\u7684\u8be5\u673a\u7075\u654f\u5ea6\u201d\u7684\u573a\u666f\u4e2d\uff0c\u7cfb\u7edf\u5f88\u53ef\u80fd\u5c31\u5de5\u4f5c\u5728 Rs = RL \u7684\u963b\u6297\u5339\u914d\u72b6\u6001\u4e0b\u3002\u6b64\u65f6\uff0c\u4fe1\u53f7\u53d1\u751f\u5668\u8bbe\u7f6e\u7684\u6e90\u7535\u52a8\u52bf\uff08Source EMF\uff09 \u4e3a E\uff0c\u4f46\u5b9e\u9645\u52a0\u5230\u88ab\u6d4b\u8bbe\u5907\u8f93\u5165\u7aef\u53e3\u4e0a\u7684\u7535\u538b\u786e\u5b9e\u662f E\/2\u3002<\/p>\n\n\n\n<p>\u7ed3\u8bba\u4e8c\uff1a\u5728\u521a\u624d\u7684\u6d4b\u91cf\u573a\u666f\u4e0b\uff0c\u56e0\u4e3a\u901a\u5e38\u9ed8\u8ba4\u662f\u963b\u6297\u5339\u914d\u7684\uff0c\u6240\u4ee5\u201c\u7aef\u53e3\u7535\u538b\u662f\u7535\u6e90\u7535\u52a8\u52bf\u76841\/2\u201d\u8fd9\u4e2a\u8bf4\u6cd5\u662f\u6b63\u786e\u7684\uff0c\u5e76\u4e14\u662f\u4e00\u4e2a\u975e\u5e38\u91cd\u8981\u7684\u57fa\u672c\u6982\u5ff5\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5982\u679c\u6761\u4ef6\u4e0d\u6ee1\u8db3\u5462\uff1f<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u8d1f\u8f7d\u963b\u6297\u8fdc\u5927\u4e8e\u6e90\u963b\u6297\uff08RL &gt;&gt; Rs\uff09\uff0c\u4f8b\u5982\u7528\u9ad8\u963b\u6297\u7684\u7535\u538b\u8868\u6d4b\u91cf\u7535\u6c60\u7535\u538b\uff0c\u6b64\u65f6\u7aef\u53e3\u7535\u538b Uo \u2248 E\uff0c\u51e0\u4e4e\u7b49\u4e8e\u7535\u52a8\u52bf\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u8d1f\u8f7d\u963b\u6297\u8fdc\u5c0f\u4e8e\u6e90\u963b\u6297\uff08RL &lt;&lt; Rs\uff09\uff0c\u6b64\u65f6\u7aef\u53e3\u7535\u538b Uo \u2248 0\u3002<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u603b\u7ed3<\/h4>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u9519\uff1a\u5982\u679c\u4e0d\u8003\u8651\u524d\u63d0\u6761\u4ef6\uff0c\u7edd\u5bf9\u5730\u8bf4\u201c\u7aef\u53e3\u7535\u538b\u603b\u662f\u7535\u6e90\u7535\u52a8\u52bf\u7684\u4e00\u534a\u201d\uff0c\u90a3\u662f\u9519\u8bef\u7684\u3002<\/li>\n\n\n\n<li>\u5bf9\uff1a\u5728\u963b\u6297\u5339\u914d\uff08Rs = RL\uff09 \u8fd9\u4e00\u7279\u5b9a\u4e14\u5e38\u89c1\u7684\u6761\u4ef6\u4e0b\uff0c\u8fd9\u4e2a\u8bf4\u6cd5\u662f\u5b8c\u5168\u6b63\u786e\u7684\u3002\u800c\u8fd9\u6b63\u662f\u4f60\u8fdb\u884c\u5c04\u9891\u3001\u5fae\u6ce2\u7b49\u7075\u654f\u5ea6\u6d4b\u91cf\u65f6\u6700\u5178\u578b\u7684\u5de5\u4f5c\u72b6\u6001\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">dB\u5230\u5e95\u662f\u4ec0\u4e48\uff1f<\/h3>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e00\u3001dB\uff08\u5206\u8d1d\uff09\u7684\u672c\u8d28\uff1a\u4e00\u4e2a\u201c\u6bd4\u4f8b\u201d\u5c3a<\/h4>\n\n\n\n<p>\u9996\u5148\uff0c\u6700\u6838\u5fc3\u7684\u4e00\u70b9\uff1adB\u672c\u8eab\u4e0d\u662f\u4e00\u4e2a\u7edd\u5bf9\u7684\u6570\u503c\uff0c\u800c\u662f\u4e00\u4e2a\u8868\u793a\u201c\u6bd4\u4f8b\u201d\u6216\u201c\u500d\u6570\u5173\u7cfb\u201d\u7684\u5355\u4f4d\u3002\u5b83\u6765\u81ea\u4e8e\u8d1d\u5c14\uff08Bel\uff09\uff0c\u4e3a\u4e86\u7eaa\u5ff5\u7535\u8bdd\u7684\u53d1\u660e\u8005\u4e9a\u5386\u5c71\u5927\u00b7\u683c\u96f7\u5384\u59c6\u00b7\u8d1d\u5c14\u30021\u8d1d\u5c14\u8868\u793a\u529f\u7387\u589e\u592710\u500d\u3002\u4f46\u8d1d\u5c14\u8fd9\u4e2a\u5355\u4f4d\u592a\u5927\uff0c\u6240\u4ee5\u5e38\u7528\u5b83\u7684\u5341\u5206\u4e4b\u4e00\uff0c\u5373\u201c\u5206\u8d1d\u5c14\u201d\uff08deci-Bel\uff09\uff0c\u7b80\u79f0\u5206\u8d1d\uff08dB\uff09\u3002\u6240\u4ee5\uff1a1\u8d1d\u5c14 = 10\u5206\u8d1d\uff08dB\uff09<\/p>\n\n\n\n<p>\u6838\u5fc3\u5b9a\u4e49\uff1a\u5bf9\u4e8e\u529f\u7387\uff0c\u5206\u8d1d\u7684\u8ba1\u7b97\u516c\u5f0f\u662f\uff1a<strong><em>dB=10xlog<sub>10<\/sub>(P<sub>2<\/sub>\/P<sub>1<\/sub>)<\/em><\/strong>,\u8fd9\u91cc\u7684<strong><em>P<sub>1<\/sub><\/em><\/strong>\u548c <strong><em>P<sub>2<\/sub><\/em><\/strong>\u662f\u4e24\u4e2a\u9700\u8981\u6bd4\u8f83\u7684\u529f\u7387\u503c\u3002<\/p>\n\n\n\n<p><strong>\u5b83\u89e3\u51b3\u4e86\u4ec0\u4e48\u95ee\u9898\uff1f<\/strong>\u6211\u4eec\u7684\u611f\u5b98\uff08\u542c\u89c9\u3001\u89c6\u89c9\uff09\u548c\u5bf9\u4fe1\u53f7\u5f3a\u5f31\u7684\u611f\u77e5\uff0c\u5e76\u4e0d\u662f\u7ebf\u6027\u7684\uff0c\u800c\u662f\u5bf9\u6570\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u529f\u7387\u4ece1\u74e6\u589e\u52a0\u52302\u74e6\uff0c\u6211\u4eec\u611f\u89c9\u5230\u7684\u201c\u54cd\u5ea6\u201d\u53d8\u5316\u5f88\u5927\uff1b\u4f46\u4ece100\u74e6\u589e\u52a0\u5230101\u74e6\uff0c\u6211\u4eec\u51e0\u4e4e\u611f\u89c9\u4e0d\u5230\u53d8\u5316\u3002\u5206\u8d1d\u7528\u5bf9\u6570\u8ba1\u7b97\uff0c\u6b63\u597d\u7b26\u5408\u6211\u4eec\u7684\u611f\u77e5\u7279\u6027<\/p>\n\n\n\n<p>\u4e3e\u4e2a\u4f8b\u5b50\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u529f\u7387\u589e\u5927\u4e3a 2\u500d\uff1a <strong><em>10xlog<sub>10<\/sub>(2)<\/em><\/strong>=10&#215;0.3=3dB  \uff08\u6211\u4eec\u5e38\u8bf4\u201c\u529f\u7387\u589e\u52a0\u4e863\u4e2adB\u201d\uff09<\/li>\n\n\n\n<li>\u529f\u7387\u589e\u5927\u4e3a 10\u500d\uff1a<strong><em>10xlog<sub>10<\/sub>(10)<\/em><\/strong>=10&#215;1=10dB<\/li>\n\n\n\n<li>\u529f\u7387\u51cf\u5c0f\u4e3a \u4e00\u534a\uff1a <strong><em>10xlog<sub>10<\/sub>(1\/2)<\/em><\/strong>=10x-0.3=-3dB<\/li>\n<\/ul>\n\n\n\n<h4 class=\"wp-block-heading\">\u4e8c\u3001\u4ece\u201c\u6bd4\u4f8b\u201d\uff08dB\uff09\u5230\u201c\u7edd\u5bf9\u503c\u201d\uff08dBm, dBW\uff09<\/h4>\n\n\n\n<p>\u5149\u6709\u6bd4\u4f8b\u8fd8\u4e0d\u591f\uff0c\u5728\u5de5\u7a0b\u4e0a\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u7edd\u5bf9\u7684\u57fa\u51c6\u3002\u4e8e\u662f\uff0c\u4eba\u4eec\u5b9a\u4e49\u4e86\u4e00\u4e9b\u7edd\u5bf9\u529f\u7387\u5355\u4f4d\uff0c\u6700\u5e38\u89c1\u7684\u5c31\u662f dBm\u3002<strong><em>dBm\u7684\u5b9a\u4e49\uff1aP<sub>1<\/sub>= 1mW \uff081\u6beb\u74e6\uff09<\/em><\/strong>,<strong><em>dBm = 10 xlog10(P\/1mW)<\/em><\/strong>,\u6240\u4ee5\uff0cdBm\u8868\u793a\u7684\u662f\u529f\u7387\u76f8\u5bf9\u4e8e1\u6beb\u74e6\u7684\u6bd4\u503c\u3002\u7c7b\u4f3c\u5730\uff0c\u8fd8\u6709\u4ee51\u74e6\u4e3a\u57fa\u51c6\u7684dBW<\/p>\n\n\n\n<p>dB\u00b5V \u548cdBm \u662f\u5b8c\u5168\u540c\u6837\u7684\u9053\u7406\uff0c\u5b83\u4eec\u90fd\u5c5e\u4e8e\u201c\u5206\u8d1d\u5bb6\u65cf\u201d\uff0c\u6838\u5fc3\u601d\u60f3\u4e00\u6a21\u4e00\u6837\uff0c\u53ea\u662f\u9009\u62e9\u7684<em><strong>\u201c\u53c2\u8003\u57fa\u51c6\u201d<\/strong><\/em>\u4e0d\u540c\u3002<\/p>\n\n\n\n<p>\u6211\u4eec\u53ef\u4ee5\u628a\u5206\u8d1d\u503c\u7406\u89e3\u4e3a\u201c\u4e00\u4e2a\u6570\u503c\u76f8\u5bf9\u4e8e\u67d0\u4e2a\u6807\u51c6\u53c2\u8003\u503c\u7684\u5927\u5c0f\u5173\u7cfb\u201d\u3002\u9009\u62e9\u4e0d\u540c\u7684\u201c\u53c2\u8003\u503c\u201d\uff0c\u5c31\u4ea7\u751f\u4e86\u4e0d\u540c\u7684\u5206\u8d1d\u5355\u4f4d\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u4e09\u3001\u5206\u8d1d\u5355\u4f4d\u5bf9\u6bd4\u4e00\u89c8<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u5355\u4f4d<\/th><th>\u5168\u79f0\u4e0e\u4e2d\u6587\u540d<\/th><th>\u53c2\u8003\u57fa\u51c6<\/th><th>\u8ba1\u7b97\u516c\u5f0f<\/th><th>\u5e94\u7528\u573a\u666f\u4e0e\u8bf4\u660e<\/th><\/tr><\/thead><tbody><tr><td>dBm<\/td><td>dB relative to 1 milliwatt<br>\u5206\u8d1d\u6beb\u74e6<\/td><td>1 \u6beb\u74e6 (mW)<\/td><td>10*log<sub>10<\/sub>(P \/ 1mW)<\/td><td>\u6d4b\u91cf\u529f\u7387\u3002\u5728\u5c04\u9891\u5fae\u6ce2\u3001\u901a\u4fe1\u9886\u57df\u662f\u9ec4\u91d1\u6807\u51c6\u30020 dBm = 1\u6beb\u74e6<\/td><\/tr><tr><td>dB\u00b5V<\/td><td>dB relative to 1 microvolt<br>\u5206\u8d1d\u5fae\u4f0f<\/td><td>1 \u5fae\u4f0f (\u00b5V)<\/td><td>20*log10(V \/ 1\u00b5V)<\/td><td>\u6d4b\u91cf\u7535\u538b\u3002\u5728\u7535\u89c6\u3001\u5e7f\u64ad\u3001\u573a\u5f3a\u6d4b\u91cf\u4e2d\u6781\u4e3a\u5e38\u7528\u30020 dB\u00b5V = 1\u5fae\u4f0f<\/td><\/tr><tr><td>dBV<\/td><td>dB relative to 1 Volt<br>\u5206\u8d1d\u4f0f 1 \u4f0f\u7279 (V)<\/td><td>1 \u4f0f\u7279 (V)<\/td><td>20*log<sub>10<\/sub>(V \/ 1V)<\/td><td>\u6d4b\u91cf\u7535\u538b\u3002\u5728\u4e13\u4e1a\u97f3\u9891\u3001\u6d88\u8d39\u7535\u5b50\u9886\u57df\u5e38\u89c1\u30020 dBV = 1\u4f0f\u7279\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p><strong>\u6838\u5fc3\u539f\u7406\u8be6\u89e3<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u7edf\u4e00\u7684\u903b\u8f91\u6240\u6709\u8fd9\u4e9b\u5355\u4f4d\uff08dBm, dB\u00b5V, dBV\uff09\u7684\u672c\u8d28\uff0c\u90fd\u662f\u628a\u4e00\u4e2a\u9700\u8981\u8868\u8fbe\u7684\u7edd\u5bf9\u503c\uff08\u529f\u7387\u6216\u7535\u538b\uff09\u4e0e\u4e00\u4e2a\u56fa\u5b9a\u7684\u3001\u516c\u8ba4\u7684\u53c2\u8003\u503c\u8fdb\u884c\u6bd4\u8f83\uff0c\u7136\u540e\u7528\u5bf9\u6570\u7684\u5f62\u5f0f\uff08\u5206\u8d1d\uff09\u8868\u8fbe\u51fa\u8fd9\u4e2a\u6bd4\u503c\u3002\n<ul class=\"wp-block-list\">\n<li>dBm\uff1a\u56de\u7b54\u7684\u662f\u201c\u8fd9\u4e2a\u529f\u7387\u662f1\u6beb\u74e6\u7684\u591a\u5c11\u500d\uff1f\uff08\u7528\u5206\u8d1d\u8868\u793a\uff09\u201d<\/li>\n\n\n\n<li>dB\u00b5V\uff1a\u56de\u7b54\u7684\u662f\u201c\u8fd9\u4e2a\u7535\u538b\u662f1\u5fae\u4f0f\u7684\u591a\u5c11\u500d\uff1f\uff08\u7528\u5206\u8d1d\u8868\u793a\uff09\u201d<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>10log vs. 20log \u7684\u5173\u952e\u533a\u522b\n<ul class=\"wp-block-list\">\n<li>\u529f\u7387 \u4f7f\u7528&#8221;<strong><em>10*log<sub>10<\/sub>(\u6bd4\u503c)<\/em><\/strong>&#8220;\u3002\u56e0\u4e3a\u529f\u7387\u672c\u8eab\u5c31\u662f\u4e00\u4e2a\u4e0e\u80fd\u91cf\u76f4\u63a5\u76f8\u5173\u7684\u91cf\u3002<\/li>\n\n\n\n<li>\u7535\u538b \u4f7f\u7528&#8221;<em><strong>20*log<sub>10<\/sub>(\u6bd4\u503c)<\/strong><\/em>&#8220;\u3002\u8fd9\u662f\u56e0\u4e3a\u529f\u7387,<strong><em>&#8220;P \u221d V\u00b2&#8221;\uff08\u5728\u7535\u963b\u4e00\u5b9a\u65f6\uff09<\/em><\/strong>\u3002\u5f53\u6211\u4eec\u7528\u7535\u538b\u6bd4\u503c\u8ba1\u7b97\u5206\u8d1d\u65f6\uff0c\u5b9e\u9645\u4e0a\u662f\u5728\u8ba1\u7b97\u529f\u7387\u6bd4\u503c\uff1a&#8221;<em><strong>10log<sub>10<\/sub>(P2\/P1) = 10log<sub>10<\/sub>( (V2\u00b2\/R) \/ (V1\u00b2\/R) ) = 10log<sub>10<\/sub>( (V2\/V1)\u00b2 ) = 20log<sub>10<\/sub>(V2\/V1)<\/strong><\/em>&#8220;<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">\u603b\u7ed3:<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>dB\uff08\u5206\u8d1d\uff09\uff1a\u662f\u4e00\u4e2a\u8868\u793a\u6bd4\u4f8b\u7684\u5bf9\u6570\u5355\u4f4d\uff0c\u7528\u4e8e\u63cf\u8ff0\u589e\u76ca\u6216\u8870\u51cf\u3002<\/li>\n\n\n\n<li>dBm\uff1a\u662f\u4e00\u4e2a\u8868\u793a\u7edd\u5bf9\u529f\u7387\u7684\u5355\u4f4d\uff0c\u53c2\u8003\u57fa\u51c6\u662f1\u6beb\u74e6\u3002<\/li>\n\n\n\n<li>\u5728\u521a\u624d\u7684\u9898\u76ee\u4e2d\uff1a\u201c\u7075\u654f\u5ea6\u201d\u662f\u4e00\u4e2a\u7535\u538b\uff0c\u4f46\u201c\u529f\u7387\u7535\u5e73\u201d\u662f\u4e00\u4e2a\u529f\u7387\u3002\u901a\u8fc7\u7535\u8def\u6a21\u578b\uff08\u963b\u6297\u5339\u914d\uff09\uff0c\u6211\u4eec\u5c06\u7535\u538b\u8f6c\u6362\u6210\u4e86\u5929\u7ebf\u8f93\u5165\u7aef\u53e3\u63a5\u6536\u5230\u7684\u529f\u7387\uff0c\u7136\u540e\u7528dBm\u8fd9\u4e2a\u5355\u4f4d\u6765\u8868\u8fbe\u8fd9\u4e2a\u975e\u5e38\u5fae\u5c0f\u7684\u529f\u7387\uff0c\u56e0\u4e3a\u5b83\u6bd4\u7528\u201c\u74e6\u201d\u6765\u8868\u793a\uff08\u4f8b\u5982 1&#215;10^-13 \u74e6\uff09\u8981\u76f4\u89c2\u548c\u65b9\u4fbf\u5f97\u591a\u3002<\/li>\n\n\n\n<li>dB\u00b5V \u548c dBm \u786e\u5b9e\u662f\u540c\u6837\u7684\u9053\u7406\uff0c\u5b83\u4eec\u90fd\u662f\u7528\u5206\u8d1d\u6765\u8868\u793a\u4e00\u4e2a\u7edd\u5bf9\u503c\u3002<\/li>\n\n\n\n<li>\u5b83\u4eec\u4e4b\u95f4\u7684\u533a\u522b\u4ec5\u5728\u4e8e\u53c2\u8003\u57fa\u51c6\u4e0d\u540c\uff1a\u4e00\u4e2a\u53c2\u8003&#8221;1\u00b5V&#8221;\uff08\u7535\u538b\uff09\uff0c\u4e00\u4e2a\u53c2\u8003&#8221;1mW&#8221;\uff08\u529f\u7387\uff09\u3002<\/li>\n\n\n\n<li>\u5728&#8221;50\u03a9&#8221; \u7684\u6807\u51c6\u5c04\u9891\u7cfb\u7edf\u4e2d\uff0c\u5b83\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u56fa\u5b9a\u7684\u6570\u503c\uff08&#8221;-113&#8243;\uff09\u8fdb\u884c\u975e\u5e38\u4fbf\u6377\u7684\u6362\u7b97\u3002<\/li>\n<\/ul>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u591a\u5f84\u4f20\u64ad \u4ec0\u4e48\u662f\u591a\u5f84\u4f20\u64ad\uff1f\u7535\u6ce2\u5728\u4ece\u53d1\u5c04\u7aef\u5230\u63a5\u6536\u7aef\u7684\u4f20\u64ad\u8fc7\u7a0b\u4e2d\uff0c\u5e76\u975e\u53ea\u6cbf\u7740\u4e00\u6761\u76f4\u7ebf\u8def\u5f84\uff08\u76f4\u5c04\u6ce2\uff09\u4f20\u64ad\u3002\u5b83\u4f1a\u901a\u8fc7\u4e0d [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30,55],"tags":[],"class_list":["post-570","post","type-post","status-publish","format-standard","hentry","category-technology-horizon","category-technology"],"_links":{"self":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/570","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/comments?post=570"}],"version-history":[{"count":24,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/570\/revisions"}],"predecessor-version":[{"id":856,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/posts\/570\/revisions\/856"}],"wp:attachment":[{"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/media?parent=570"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/categories?post=570"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.preluna.xyz\/index.php\/wp-json\/wp\/v2\/tags?post=570"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}