{"id":98416,"date":"2024-10-22T17:42:41","date_gmt":"2024-10-22T09:42:41","guid":{"rendered":"\/\/www.viralrail.com\/?p=98416"},"modified":"2024-10-24T11:08:13","modified_gmt":"2024-10-24T03:08:13","slug":"cwcsjsjgzyl","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/98416.html","title":{"rendered":"\u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a\u5de5\u4f5c\u539f\u7406"},"content":{"rendered":"\n<p>\u3000\u3000<strong>\u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a<\/strong>\u7684\u5de5\u4f5c\u539f\u7406\u57fa\u4e8e\u5c06\u63a5\u6536\u5230\u7684\u5c04\u9891\u4fe1\u53f7\u4e0e\u672c\u5730\u632f\u8361\u5668\u4ea7\u751f\u7684\u56fa\u5b9a\u9891\u7387\u4fe1\u53f7\u8fdb\u884c\u6df7\u9891\uff0c\u4ece\u800c\u5c06\u5c04\u9891\u4fe1\u53f7\u8f6c\u6362\u4e3a\u4e2d\u9891\u4fe1\u53f7\u3002\u8fd9\u4e00\u8fc7\u7a0b\u7684\u6838\u5fc3\u5728\u4e8e\u5229\u7528\u6df7\u9891\u5668\u5b9e\u73b0\u9891\u7387\u7684\u8f6c\u6362\uff0c\u4f7f\u5f97\u540e\u7eed\u7684\u4fe1\u53f7\u5904\u7406\u53ef\u4ee5\u96c6\u4e2d\u5728\u56fa\u5b9a\u7684\u4e2d\u9891\u4e0a\uff0c\u4ece\u800c\u63d0\u9ad8\u63a5\u6536\u673a\u7684\u6027\u80fd\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5177\u4f53\u6765\u8bf4\uff0c\u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a\u7684\u5de5\u4f5c\u6d41\u7a0b\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul 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class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 \u5982\u4f55\u8bbe\u8ba1\u4e00\u4e2a\u9ad8\u6548\u7684\u4e2d\u9891\u653e\u5927\u5668\u4ee5\u63d0\u9ad8\u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6?<\/h2>\n\n\n\n<p>\u3000\u3000\u8bbe\u8ba1\u4e00\u4e2a\u9ad8\u6548\u7684\u4e2d\u9891\u653e\u5927\u5668\u4ee5\u63d0\u9ad8\u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\uff0c\u9700\u8981\u7efc\u5408\u8003\u8651\u591a\u4e2a\u56e0\u7d20\u548c\u6b65\u9aa4\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u8bbe\u8ba1\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u4e2d\u9891\u653e\u5927\u5668\u901a\u5e38\u5de5\u4f5c\u5728\u51e0\u767e\u5343\u8d6b\u5179\u5230\u51e0\u5146\u8d6b\u5179\u7684\u9891\u7387\u8303\u56f4\u5185\uff0c\u5e38\u89c1\u7684\u9891\u7387\u6709455\u5343\u8d6b\u5179\u548c10.7\u5146\u8d6b\u5179\u3002\u6839\u636e\u5177\u4f53\u5e94\u7528\u9700\u6c42\uff0c\u9009\u62e9\u5408\u9002\u7684\u4e2d\u9891\u9891\u7387\u8303\u56f4(\u4f8b\u59821MHz~10MHz)\u548c\u589e\u76ca(\u4f8b\u598220~30dB)\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u63d0\u51fa\u5177\u4f53\u7684\u8bbe\u8ba1\u65b9\u6848\u540e\uff0c\u642d\u5efa\u7535\u8def\u539f\u7406\u56fe\u662f\u5173\u952e\u6b65\u9aa4\u4e4b\u4e00\u3002\u8fd9\u5305\u62ec\u9ad8\u9891\u653e\u5927\u5668\u3001\u6df7\u9891\u5668\u3001\u672c\u5730\u632f\u8361\u5668\u3001\u4e2d\u9891\u6ee4\u6ce2\u5668\u548c\u68c0\u6ce2\u5668\u7b49\u5173\u952e\u7ec4\u4ef6\u7684\u96c6\u6210\u3002\u8fd9\u4e9b\u7ec4\u4ef6\u534f\u540c\u5de5\u4f5c\uff0c\u786e\u4fdd\u4fe1\u53f7\u7684\u6709\u6548\u653e\u5927\u548c\u5904\u7406\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f7f\u7528\u9ad8\u8d28\u91cf\u7684\u5143\u4ef6\u662f\u63d0\u9ad8\u4e2d\u9891\u653e\u5927\u5668\u6027\u80fd\u7684\u91cd\u8981\u56e0\u7d20\u3002\u4f8b\u5982\uff0c\u91c7\u7528\u5fae\u6ce2\u4e8c\u6781\u7ba1(\u5982PIN\u5fae\u6ce2\u4e8c\u6781\u7ba1)\u53ef\u4ee5\u63d0\u9ad8\u7535\u8def\u7cbe\u5ea6\uff0c\u5176\u53c2\u6570\u5305\u62ec\u53cd\u5411\u7535\u538b\u2265200V\u3001\u6b63\u5411\u5fae\u5206\u7535\u963b\u22641\u03a9\u3001\u7ed3\u7535\u5bb9\u22640.40pF\u3001\u8017\u6563\u529f\u7387\u22650.3W\u3002\u6b64\u5916\uff0c\u4e2d\u9891\u53d8\u538b\u5668\u5728\u7535\u8def\u4e2d\u8d77\u7740\u9009\u9891\u548c\u963b\u6297\u53d8\u6362\u7684\u4f5c\u7528\uff0c\u5229\u7528\u5e76\u8054\u8c10\u632f\u7684\u7279\u70b9\u5b8c\u6210\u9009\u9891\u4f5c\u7528\uff0c\u5bf9\u8c10\u632f\u9891\u7387\u4fe1\u53f7\u5448\u73b0\u7684\u963b\u6297\u5f88\u5927\uff0c\u5bf9\u975e\u8c10\u632f\u9891\u7387\u7684\u4fe1\u53f7\u5448\u73b0\u7684\u963b\u6297\u8f83\u5c0f\uff0c\u4ece\u800c\u4ea7\u751f\u5f88\u5927\u7684\u4e2d\u9891\u4fe1\u53f7\u538b\u964d\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8bbe\u8ba1\u5b8c\u6210\u540e\uff0c\u5bf9\u7535\u8def\u6a21\u5757\u4e2d\u7684\u5404\u4e2a\u53c2\u6570\u8fdb\u884c\u4eff\u771f\uff0c\u4ee5\u9a8c\u8bc1\u8bbe\u8ba1\u7684\u6709\u6548\u6027\u548c\u7a33\u5b9a\u6027\u3002\u901a\u8fc7\u4eff\u771f\u53ef\u4ee5\u53d1\u73b0\u6f5c\u5728\u7684\u95ee\u9898\u5e76\u8fdb\u884c\u4f18\u5316\uff0c\u786e\u4fdd\u589e\u76ca\u5e73\u5766\u5ea6\u8fbe\u5230\u8981\u6c42(\u4f8b\u5982-1dB)\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u8d85\u5916\u5dee\u63a5\u6536\u673a\u4e2d\u7684\u524d\u7f6e\u653e\u5927\u5668\u548c\u4e2d\u9891\u653e\u5927\u5668\u80fd\u591f\u5bf9\u4fe1\u53f7\u8fdb\u884c\u653e\u5927\uff0c\u63d0\u9ad8\u4e86\u63a5\u6536\u7075\u654f\u5ea6\u3002\u901a\u8fc7\u9009\u62e9\u5408\u9002\u7684\u4e2d\u9891\u9891\u7387\u548c\u955c\u50cf\u6291\u5236\u6ee4\u6ce2\u5668\uff0c\u53ef\u4ee5\u83b7\u5f97\u5f88\u597d\u7684\u4fe1\u9053\u9009\u62e9\u6548\u679c\uff0c\u540c\u65f6\u4e5f\u53ef\u4ee5\u83b7\u5f97\u5f88\u597d\u7684\u7075\u654f\u5ea6\u548c\u52a8\u6001\u8303\u56f4\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8bbe\u8ba1\u4e2d\u9891\u653e\u5927\u5668\u65f6\uff0c\u8fd8\u9700\u8003\u8651\u566a\u58f0\u5904\u7406\u548c\u63a5\u6536\u673a\u5e26\u5bbd\u9009\u62e9\u3002\u566a\u58f0\u5904\u7406\u6280\u672f\u5728\u6291\u5236\u566a\u58f0\u548c\u6742\u6ce2\u4e2d\u8d77\u7740\u5173\u952e\u4f5c\u7528\uff0c\u6709\u52a9\u4e8e\u63d0\u9ad8\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 \u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a\u4e2d\u7684\u6ee4\u6ce2\u5668\u662f\u5982\u4f55\u9009\u62e9\u548c\u8bbe\u8ba1\u7684\uff0c\u4ee5\u786e\u4fdd\u9ad8\u9009\u62e9\u6027\u548c\u4f4e\u566a\u58f0?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u8d85\u5916\u5dee\u5f0f\u63a5\u6536\u673a\u4e2d\uff0c\u6ee4\u6ce2\u5668\u7684\u9009\u62e9\u548c\u8bbe\u8ba1\u662f\u786e\u4fdd\u9ad8\u9009\u62e9\u6027\u548c\u4f4e\u566a\u58f0\u7684\u5173\u952e\u6b65\u9aa4\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u5206\u6790\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8d85\u5916\u5dee\u63a5\u6536\u673a\u4e2d\uff0c\u4fe1\u9053\u6ee4\u6ce2\u5668\u901a\u5e38\u653e\u7f6e\u5728\u4e2d\u9891(IF)\u7ea7\u4e2d\uff0c\u4ee5\u63d0\u4f9b\u9ad8\u9009\u62e9\u6027\u3002\u8fd9\u79cd\u8bbe\u8ba1\u4f7f\u5f97\u5728\u56fa\u5b9a\u7684\u4e2d\u9891\u9891\u7387\u5904\uff0c\u80fd\u591f\u83b7\u5f97\u9ad8\u4e14\u7a33\u5b9a\u7684\u589e\u76ca\uff0c\u5e76\u4e14\u5728\u76f8\u540c\u589e\u76ca\u4e0b\uff0c\u4e2d\u9891\u5b9e\u73b0\u6240\u9700\u7684\u529f\u8017\u8981\u4f4e\u4e8e\u5c04\u9891\u3002\u4f8b\u5982\uff0c\u5728AM\u63a5\u6536\u673a\u8bbe\u8ba1\u4e2d\uff0c\u4e2d\u9891\u9891\u70b9\u5904\u7684\u6709\u6e90\u5e26\u901a\u6ee4\u6ce2\u5668\u4f7f\u7528FilterPro\u8fdb\u884c\u8bbe\u8ba1\uff0c\u4e2d\u5fc3\u9891\u7387\u4e3a465kHz\uff0c\u589e\u76ca\u4e3a10dB\uff0c\u5e26\u5bbd\u4e3a8000Hz\uff0c\u6ee4\u6ce2\u5668\u9636\u6570\u4e3a\u4e8c\u9636\uff0c\u53cd\u9988\u7c7b\u578b\u4e3a\u5df4\u7279\u6c83\u5179\u578b\uff0c\u62d3\u6251\u7ed3\u6784\u4e3aSallen-Key\u7c7b\u578b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8d85\u5916\u5dee\u63a5\u6536\u673a\u4e2d\uff0c\u955c\u50cf\u6291\u5236\u6ee4\u6ce2\u5668\u662f\u5916\u7f6e\u7684\uff0c\u5176\u4e3b\u8981\u529f\u80fd\u662f\u9650\u5236\u8f93\u5165\u4fe1\u53f7\u7684\u5e26\u5bbd\u4ee5\u4f7f\u4e92\u8c03\u5931\u771f\u6700\u5c0f\uff0c\u524a\u5f31\u5bc4\u751f\u54cd\u5e94\uff0c\u4e3b\u8981\u662f\u955c\u8c61\u9891\u7387\u548c1\/2\u4e2d\u9891\u9891\u7387\u95ee\u9898\uff0c\u5e76\u6291\u5236\u672c\u632f\u80fd\u91cf\uff0c\u4ee5\u9632\u6b62\u5176\u5230\u8fbe\u6df7\u9891\u5668\u3002\u955c\u50cf\u4fe1\u53f7\u6291\u5236\u80fd\u529b\u901a\u5e38\u8981\u6c42\u8303\u56f4\u4ece40dB (DAB)\u523070dB (PMR\u7cfb\u7edf)\uff0c\u4ee5\u786e\u4fdd\u5bf9\u591a\u4e2a\u4fe1\u9053\u63d0\u4f9b\u8db3\u591f\u7684\u955c\u50cf\u6291\u5236\u80fd\u529b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6ee4\u6ce2\u5668\u7684\u9009\u62e9\u548c\u8bbe\u8ba1\u8fd8\u6d89\u53ca\u4e0d\u540c\u7c7b\u578b\u7684\u6ee4\u6ce2\u5668\u53ca\u5176\u53c2\u6570\u3002\u4f8b\u5982\uff0c\u673a\u68b0\u6ee4\u6ce2\u5668\u5728\u8d85\u5916\u5dee\u6536\u97f3\u673a\u4e2d\u7684\u5e94\u7528\uff0c\u5176\u9009\u62e9\u6027\u662f\u8861\u91cf\u6536\u97f3\u673a\u6392\u9664\u5e72\u6270\u4fe1\u53f7\u80fd\u529b\u7684\u91cd\u8981\u6307\u6807\u3002\u6b64\u5916\uff0c\u6676\u4f53\u6ee4\u6ce2\u5668\u548c\u673a\u68b0\u6ee4\u6ce2\u5668\u7b49\u53c2\u6570\u5bf9\u9009\u62e9\u6027\u7684\u5f71\u54cd\u4e5f\u88ab\u8003\u8651\u5728\u5185\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8d85\u5916\u5dee\u63a5\u6536\u673a\u4e2d\uff0cLNA\u5fc5\u987b\u9a71\u52a850\u03a9\u8d1f\u8f7d\uff0c\u8fd9\u4f1a\u5bfc\u81f4\u9762\u79ef\u548c\u653e\u5927\u5668\u566a\u58f0\u3001\u589e\u76ca\u3001\u7ebf\u6027\u5ea6\u3001\u529f\u8017\u7684\u5e73\u8861\u6027\u95ee\u9898\u3002\u56e0\u6b64\uff0c\u5728\u8bbe\u8ba1\u6ee4\u6ce2\u5668\u65f6\uff0c\u9700\u8981\u8003\u8651\u8fd9\u4e9b\u56e0\u7d20\u4ee5\u786e\u4fdd\u6574\u4f53\u7cfb\u7edf\u7684\u4f4e\u566a\u58f0\u6027\u80fd\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u67d0\u4e9b\u8bbe\u8ba1\u4e2d\uff0c\u5e26\u901a\u6ee4\u6ce2\u5668\u9700\u8981\u9650\u5236\u5df2\u8c03\u4fe1\u53f7AM\u7684\u5e26\u5bbd\uff0c\u4f8b\u5982\u8bbe\u8ba1\u4e00\u4e2a3dB\u5e26\u5bbd\u4e3a8KHz\u3001\u77e9\u5f62\u7cfb\u6570\u4e3a0.5\u7684\u6ee4\u6ce2\u5668\u6765\u6291\u5236\u9ad8\u9891\u6210\u5206\u3002Chebyshev\u578b\u6ee4\u6ce2\u5668\u56e0\u5176\u8f83\u597d\u7684\u9891\u54cd\u7279\u6027\u800c\u88ab\u9009\u7528\u3002<\/p>\n\n\n\n<h2 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