{"id":93002,"date":"2024-05-20T09:57:37","date_gmt":"2024-05-20T01:57:37","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=93002"},"modified":"2024-05-20T09:57:42","modified_gmt":"2024-05-20T01:57:42","slug":"dzsfdqdgzyl","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/93002.html","title":{"rendered":"\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u5de5\u4f5c\u539f\u7406"},"content":{"rendered":"\n<p>\u3000\u3000<strong><a href=\"https:\/\/baike.baidu.com\/item\/%E4%BD%8E%E5%99%AA%E5%A3%B0%E6%94%BE%E5%A4%A7%E5%99%A8\/3400107\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/baike.baidu.com\/item\/%E4%BD%8E%E5%99%AA%E5%A3%B0%E6%94%BE%E5%A4%A7%E5%99%A8\/3400107\" rel=\"noreferrer noopener nofollow\">\u4f4e\u566a\u58f0\u653e\u5927\u5668<\/a>(Low Noise Amplifier\uff0cLNA)\u7684\u5de5\u4f5c\u539f\u7406<\/strong>\u4e3b\u8981\u662f\u63a5\u6536\u5fae\u5f31\u7684\u8f93\u5165\u4fe1\u53f7\uff0c\u5e76\u901a\u8fc7\u653e\u5927\u8fd9\u4e9b\u4fe1\u53f7\u6765\u63d0\u9ad8\u7cfb\u7edf\u7684\u7075\u654f\u5ea6\u548c\u4fe1\u566a\u6bd4\u3002\u5177\u4f53\u6765\u8bf4\uff0c<strong><a href=\"https:\/\/baike.baidu.com\/item\/%E4%BD%8E%E5%99%AA%E5%A3%B0%E6%94%BE%E5%A4%A7%E5%99%A8\/3400107\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/baike.baidu.com\/item\/%E4%BD%8E%E5%99%AA%E5%A3%B0%E6%94%BE%E5%A4%A7%E5%99%A8\/3400107\" rel=\"noreferrer noopener nofollow\">LNA<\/a><\/strong>\u7684\u8bbe\u8ba1\u76ee\u6807\u662f\u5728\u589e\u52a0\u4fe1\u53f7\u529f\u7387\u7684\u540c\u65f6\uff0c\u5c3d\u53ef\u80fd\u51cf\u5c11\u566a\u58f0\u548c\u5931\u771f\uff0c\u4ece\u800c\u4fdd\u8bc1\u8f93\u51fa\u4fe1\u53f7\u7684\u8d28\u91cf\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u6280\u672f\u5b9e\u73b0\u4e0a\uff0cLNA\u901a\u5e38\u91c7\u7528\u5171\u6e90\u6781\u653e\u5927\u5668(Common Source Amplifier)\u6216\u573a\u6548\u5e94\u7ba1\u7b49\u534a\u5bfc\u4f53\u5668\u4ef6\u4f5c\u4e3a\u6838\u5fc3\u7ec4\u4ef6\u3002\u8fd9\u4e9b\u5668\u4ef6\u80fd\u591f\u6709\u6548\u5730\u63a7\u5236\u8f93\u51fa\u4fe1\u53f7\u7684\u5e45\u5ea6\uff0c\u540c\u65f6\u4fdd\u6301\u8f83\u4f4e\u7684\u566a\u58f0\u6c34\u5e73\u3002\u4f8b\u5982\uff0c\u573a\u6548\u5e94\u7ba1\u653e\u5927\u5668\u901a\u8fc7\u8c03\u6574\u6805\u6781\u7535\u538b\u6765\u63a7\u5236\u8f93\u51fa\u4fe1\u53f7\uff0c\u8fd9\u79cd\u65b9\u5f0f\u53ef\u4ee5\u5728\u4e0d\u589e\u52a0\u989d\u5916\u566a\u58f0\u7684\u60c5\u51b5\u4e0b\u5b9e\u73b0\u4fe1\u53f7\u7684\u653e\u5927\u3002<\/p>\n\n\n\n<p>\u3000\u3000LNA\u7684\u8bbe\u8ba1\u8fd8\u6d89\u53ca\u5230\u591a\u4e2a\u5173\u952e\u53c2\u6570\uff0c\u5982\u566a\u58f0\u7cfb\u6570(Noise Figure\uff0cNF)\u3001\u589e\u76ca\u3001\u7a33\u5b9a\u6027\u7b49\u3002\u566a\u58f0\u7cfb\u6570\u662f\u8861\u91cfLNA\u6027\u80fd\u7684\u4e00\u4e2a\u91cd\u8981\u6307\u6807\uff0c\u5b83\u76f4\u63a5\u5f71\u54cd\u5230\u6574\u4e2a\u901a\u4fe1\u7cfb\u7edf\u7684\u7075\u654f\u5ea6\u3002\u6b64\u5916\uff0cLNA\u7684\u8bbe\u8ba1\u8fd8\u9700\u8981\u8003\u8651\u7535\u8def\u7684\u7a33\u5b9a\u6027\uff0c\u786e\u4fdd\u5728\u6574\u4e2a\u6709\u7528\u9891\u7387\u8303\u56f4\u5185\u4e0d\u4f1a\u53d1\u751f\u632f\u8361\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0cLNA\u5e38\u7528\u4e8e\u5c04\u9891\u63a5\u6536\u7cfb\u7edf\u7684\u524d\u7aef\uff0c\u5982\u536b\u661f\u63a5\u6536\u3001\u96f7\u8fbe\u901a\u4fe1\u7b49\u9886\u57df\u3002\u5728\u8fd9\u4e9b\u5e94\u7528\u4e2d\uff0cLNA\u9700\u8981\u80fd\u591f\u653e\u5927\u4ece\u5929\u7ebf\u63a5\u6536\u5230\u7684\u5fae\u5f31\u4fe1\u53f7\uff0c\u540c\u65f6\u6700\u5c0f\u5316\u81ea\u8eab\u5f15\u5165\u7684\u566a\u58f0\uff0c\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u63a5\u6536\u7075\u654f\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u5de5\u4f5c\u539f\u7406\u662f\u901a\u8fc7\u7279\u5b9a\u7684\u7535\u8def\u8bbe\u8ba1\u548c\u534a\u5bfc\u4f53\u5668\u4ef6\u9009\u62e9\uff0c\u5b9e\u73b0\u5bf9\u5fae\u5f31\u8f93\u5165\u4fe1\u53f7\u7684\u6709\u6548\u653e\u5927\uff0c\u540c\u65f6\u63a7\u5236\u566a\u58f0\u548c\u5931\u771f\uff0c\u4ee5\u6ee1\u8db3\u9ad8\u7075\u654f\u5ea6\u548c\u9ad8\u8d28\u91cf\u7684\u901a\u4fe1\u9700\u6c42\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 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class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 \u5982\u4f55\u901a\u8fc7\u8c03\u6574\u6805\u6781\u7535\u538b\u6765\u63a7\u5236\u573a\u6548\u5e94\u7ba1\u653e\u5927\u5668\u7684\u8f93\u51fa\u4fe1\u53f7\u5e45\u5ea6\uff0c\u540c\u65f6\u4fdd\u6301\u4f4e\u566a\u58f0\u6c34\u5e73?<\/h2>\n\n\n\n<p>\u3000\u3000\u8981\u901a\u8fc7\u8c03\u6574\u6805\u6781\u7535\u538b\u6765\u63a7\u5236\u573a\u6548\u5e94\u7ba1\u653e\u5927\u5668\u7684\u8f93\u51fa\u4fe1\u53f7\u5e45\u5ea6\uff0c\u540c\u65f6\u4fdd\u6301\u4f4e\u566a\u58f0\u6c34\u5e73\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u7406\u89e3JFET\u7684\u5de5\u4f5c\u539f\u7406<\/strong>\uff1aJFET\u662f\u4e00\u79cd\u7ed3\u578b\u573a\u6548\u5e94\u6676\u4f53\u7ba1\uff0c\u5176\u5de5\u4f5c\u57fa\u4e8e\u7535\u573a\u5bf9\u6c9f\u9053\u533a\u5bfc\u7535\u6027\u80fd\u7684\u63a7\u5236\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f7f\u7528\u81ea\u52a8\u589e\u76ca\u63a7\u5236(AGC)\u6280\u672f<\/strong>\uff1aAGC\u53ef\u4ee5\u5229\u7528\u7ebf\u6027\u653e\u5927\u548c\u538b\u7f29\u653e\u5927\u7684\u6709\u6548\u7ec4\u5408\u5bf9\u8f93\u51fa\u4fe1\u53f7\u8fdb\u884c\u8c03\u6574\u3002\u5728\u8f93\u5165\u4fe1\u53f7\u5e45\u5ea6\u53d8\u5316\u8f83\u5927\u65f6\uff0cAGC\u80fd\u591f\u4f7f\u8f93\u51fa\u4fe1\u53f7\u5e45\u5ea6\u7a33\u5b9a\u4e0d\u53d8\u6216\u9650\u5236\u5728\u4e00\u4e2a\u5f88\u5c0f\u7684\u8303\u56f4\u5185\u3002\u8fd9\u79cd\u65b9\u6cd5\u53ef\u4ee5\u5e2e\u52a9\u7ef4\u6301\u8f93\u51fa\u4fe1\u53f7\u7684\u7a33\u5b9a\u6027\uff0c\u540c\u65f6\u51cf\u5c11\u56e0\u8f93\u5165\u4fe1\u53f7\u6ce2\u52a8\u5f15\u8d77\u7684\u566a\u58f0\u95ee\u9898\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f18\u5316\u7535\u8def\u8bbe\u8ba1<\/strong>\uff1a\u4e3a\u4e86\u5f97\u5230\u6700\u5c0f\u566a\u58f0\u7cfb\u6570\uff0c\u9700\u8981\u4ece\u5bf9JFET\u7684\u7b49\u6548\u8f93\u5165\u7535\u538b\u566a\u58f0eN\u53ca\u7b49\u6548\u8f93\u5165\u7535\u6d41\u566a\u58f0iN\u7684\u5206\u6790\u4e2d\u83b7\u53d6\u6700\u4f73\u6e90\u7535\u963b\u3002\u8fd9\u901a\u5e38\u610f\u5473\u7740\u9009\u62e9\u6bd4\u53cc\u6781\u578b\u6676\u4f53\u7ba1\u66f4\u9ad8\u7684\u7ed3\u578b\u573a\u6548\u5e94\u7ba1\u4f5c\u4e3a\u524d\u7f6e\u653e\u5927\u5668\uff0c\u4ee5\u5b9e\u73b0\u66f4\u4f4e\u7684\u566a\u58f0\u6c34\u5e73\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u8003\u8651\u529f\u8017\u548c\u566a\u58f0\u4e4b\u95f4\u7684\u6743\u8861<\/strong>\uff1a\u867d\u7136\u573a\u6548\u5e94\u7ba1\u63d0\u4f9b\u4e86\u4f4e\u566a\u58f0\u548c\u4f4e\u529f\u8017\u7684\u4f18\u52bf\uff0c\u4f46\u5728\u8bbe\u8ba1\u65f6\u4e5f\u9700\u8981\u8003\u8651\u5230\u8fd9\u4e9b\u7279\u6027\u53ef\u80fd\u4f1a\u5f71\u54cd\u653e\u5927\u5668\u7684\u8f93\u51fa\u529f\u7387\u548c\u6548\u7387\u3002\u56e0\u6b64\uff0c\u5728\u8c03\u6574\u6805\u6781\u7535\u538b\u4ee5\u63a7\u5236\u8f93\u51fa\u4fe1\u53f7\u5e45\u5ea6\u65f6\uff0c\u5e94\u786e\u4fdd\u4e0d\u4f1a\u56e0\u8fc7\u5ea6\u9650\u5236\u6805\u6781\u7535\u538b\u800c\u5bfc\u81f4\u529f\u8017\u589e\u52a0\u6216\u566a\u58f0\u6c34\u5e73\u63d0\u9ad8\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5e94\u7528\u5dee\u5206\u653e\u5927\u7535\u8def<\/strong>\uff1a\u5728\u8bbe\u8ba1\u4f4e\u566a\u58f0\u524d\u7f6e\u653e\u5927\u5668\u65f6\uff0c\u53ef\u4ee5\u91c7\u7528\u7531\u4e24\u7ea7\u653e\u5927\u7535\u8def\u6784\u6210\u7684\u4e3b\u4f53\u7535\u8def\uff0c\u5176\u4e2d\u7b2c\u4e00\u7ea7\u662f\u5229\u7528\u573a\u6548\u5e94\u7ba1\u7ec4\u6210\u7684\u5dee\u5206\u653e\u5927\u7535\u8def\uff0c\u5bf9\u8f93\u5165\u4fe1\u53f7\u8fdb\u884c\u5904\u7406\uff0c\u5305\u62ec\u6ee4\u9664\u566a\u58f0\u548c\u653e\u5927\u4fe1\u53f7\u3002\u8fd9\u79cd\u8bbe\u8ba1\u53ef\u4ee5\u8fdb\u4e00\u6b65\u964d\u4f4e\u566a\u58f0\u6c34\u5e73\uff0c\u540c\u65f6\u63d0\u9ad8\u4fe1\u53f7\u7684\u6e05\u6670\u5ea6\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u901a\u8fc7\u4e0a\u8ff0\u6b65\u9aa4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u901a\u8fc7\u8c03\u6574\u6805\u6781\u7535\u538b\u6765\u63a7\u5236\u573a\u6548\u5e94\u7ba1\u653e\u5927\u5668\u7684\u8f93\u51fa\u4fe1\u53f7\u5e45\u5ea6\uff0c\u540c\u65f6\u4fdd\u6301\u4f4e\u566a\u58f0\u6c34\u5e73\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 \u5728\u5c04\u9891\u63a5\u6536\u7cfb\u7edf\u4e2d\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u7a33\u5b9a\u6027\u5982\u4f55\u786e\u4fdd\u4e0d\u53d1\u751f\u632f\u8361?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u5c04\u9891\u63a5\u6536\u7cfb\u7edf\u4e2d\uff0c\u786e\u4fdd\u4f4e\u566a\u58f0\u653e\u5927\u5668(LNA)\u7684\u7a33\u5b9a\u6027\u4ee5\u9632\u6b62\u632f\u8361\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u51e0\u79cd\u63aa\u65bd\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u8d1f\u53cd\u9988\u7535\u611f\u7684\u4f7f\u7528<\/strong>\uff1a\u901a\u8fc7\u5728\u67d4\u6027TFT\u6e90\u6781\u6dfb\u52a0\u8d1f\u53cd\u9988\u7535\u611f\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u7a33\u5b9a\u6027\u3002\u8fd9\u79cd\u65b9\u6cd5\u80fd\u591f\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u5f71\u54cd\u589e\u76ca\u6027\u80fd\uff0c\u4ece\u800c\u4fdd\u8bc1\u653e\u5927\u5668\u5728\u5168\u9891\u6bb5\u5185\u7684\u7a33\u5b9a\u5de5\u4f5c\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5408\u7406\u7684\u7535\u8def\u8bbe\u8ba1<\/strong>\uff1a\u907f\u514d\u4e0d\u826f\u7684\u63a5\u5730\u65b9\u6848\uff0c\u8fd9\u4e9b\u63a5\u5730\u65b9\u6848\u53ef\u80fd\u5bfc\u81f4\u591a\u7ea7\u653e\u5927\u5668\u4e0d\u540c\u7ea7\u4e4b\u95f4\u7684\u8026\u5408\uff0c\u5e76\u5f15\u8d77\u4e0d\u7a33\u5b9a\u3002\u6b64\u5916\uff0c\u786e\u4fddrf\u4fe1\u53f7\u94fe\u4e2d\u7684\u67d0\u4e9b\u7535\u8def\u5177\u6709\u660e\u786e\u5b9a\u4e49\u7684\u6e90\u963b\u6297\u6216\u8d1f\u8f7d\u963b\u6297\uff0c\u4ee5\u51cf\u5c11\u5bc4\u751f\u6548\u5e94\u548c\u907f\u514d\u632f\u8361\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9009\u7528\u4f4e\u566a\u58f0\u7684\u5143\u5668\u4ef6<\/strong>\uff1a\u5728\u8bbe\u8ba1\u4f4e\u566a\u58f0\u653e\u5927\u5668\u65f6\uff0c\u9009\u62e9\u4f4e\u566a\u58f0\u7684\u5143\u5668\u4ef6\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u8fd9\u6709\u52a9\u4e8e\u9650\u5236\u566a\u58f0\u7535\u538b\u5728\u4e00\u5b9a\u8303\u56f4\u5185\uff0c\u4ece\u800c\u63d0\u9ad8\u653e\u5927\u5668\u7684\u6574\u4f53\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6ee4\u6ce2\u6280\u672f<\/strong>\uff1a\u91c7\u7528\u6ee4\u6ce2\u6280\u672f\u53ef\u4ee5\u6709\u6548\u5730\u6d88\u9664\u81ea\u6fc0\u632f\u8361\uff0c\u540c\u65f6\u4e5f\u6709\u52a9\u4e8e\u566a\u58f0\u6291\u5236\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7535\u78c1\u5c4f\u853d\u6280\u672f<\/strong>\uff1a\u5728\u7535\u8def\u8bbe\u8ba1\u4e2d\u91c7\u7528\u7535\u78c1\u5c4f\u853d\u6280\u672f\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u51cf\u5c11\u5916\u754c\u7535\u78c1\u5e72\u6270\uff0c\u4ece\u800c\u63d0\u9ad8\u653e\u5927\u5668\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5dee\u5206\u7ed3\u6784\u4f20\u8f93\u6a21\u62df\u4fe1\u53f7<\/strong>\uff1a\u91c7\u7528\u5dee\u5206\u7ed3\u6784\u4f20\u8f93\u6a21\u62df\u4fe1\u53f7\u53ef\u4ee5\u51cf\u5c11\u566a\u58f0\u548c\u5e72\u6270\uff0c\u6709\u52a9\u4e8e\u63d0\u9ad8\u653e\u5927\u5668\u7684\u7a33\u5b9a\u6027\u548c\u4fe1\u53f7\u8d28\u91cf\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u53bb\u8026\u7535\u5bb9\u7684\u4f7f\u7528<\/strong>\uff1a\u5728\u7535\u8def\u7684\u7535\u6e90\u8f93\u51fa\u7aef\u52a0\u53bb\u8026\u7535\u5bb9\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u9694\u79bb\u7535\u6e90\u566a\u58f0\uff0c\u8fdb\u4e00\u6b65\u63d0\u9ad8\u653e\u5927\u5668\u7684\u7a33\u5b9a\u6027\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 \u4f4e\u566a\u58f0\u653e\u5927\u5668\u5728\u536b\u661f\u63a5\u6536\u548c\u96f7\u8fbe\u901a\u4fe1\u7b49\u9886\u57df\u7684\u5e94\u7528\u6848\u4f8b\u6709\u54ea\u4e9b?<\/h2>\n\n\n\n<p>\u3000\u3000\u4f4e\u566a\u58f0\u653e\u5927\u5668(LNA)\u5728\u536b\u661f\u63a5\u6536\u548c\u96f7\u8fbe\u901a\u4fe1\u7b49\u9886\u57df\u7684\u5e94\u7528\u6848\u4f8b\u4e3b\u8981\u4f53\u73b0\u5728\u5176\u5bf9\u4fe1\u53f7\u653e\u5927\u7684\u80fd\u529b\u4ee5\u53ca\u5bf9\u566a\u58f0\u5e72\u6270\u7684\u6291\u5236\u6548\u679c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5177\u4f53\u7684\u5e94\u7528\u6848\u4f8b\uff1a<\/p>\n\n\n\n<ul 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