{"id":33693,"date":"2023-09-14T17:18:00","date_gmt":"2023-09-14T09:18:00","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=33693"},"modified":"2023-09-14T17:18:04","modified_gmt":"2023-09-14T09:18:04","slug":"dzfdzyjszb","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/33693.html","title":{"rendered":"\u4f4e\u566a\u653e\u7684\u4e3b\u8981\u6280\u672f\u6307\u6807"},"content":{"rendered":"\n<p>\u3000\u3000<strong>\u4f4e\u566a\u58f0\u653e\u5927\u5668\u662f\u73b0\u4ee3\u7535\u5b50\u8bbe\u5907\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u7ec4\u6210\u90e8\u5206\u3002\u65e0\u8bba\u662f\u5728\u901a\u4fe1\u7cfb\u7edf\u8fd8\u662f\u5728\u79d1\u5b66\u7814\u7a76\u4e2d\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u90fd\u626e\u6f14\u7740\u5173\u952e\u89d2\u8272\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u4e3b\u8981\u6280\u672f\u6307\u6807<\/strong>\uff0c\u5e2e\u52a9\u60a8\u4e86\u89e3\u5982\u4f55\u9009\u62e9\u6700\u4f73\u6027\u80fd\u7684\u653e\u5927\u5668\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001\u566a\u58f0\u6307\u6807\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u4e3b\u8981\u76ee\u6807\u662f\u5728\u653e\u5927\u4fe1\u53f7\u65f6\u5c3d\u53ef\u80fd\u5730\u51cf\u5c0f\u566a\u58f0\u3002\u566a\u58f0\u6307\u6807\u662f\u8bc4\u4f30\u653e\u5927\u5668\u6027\u80fd\u7684\u5173\u952e\u53c2\u6570\u4e4b\u4e00\u3002\u5e38\u7528\u7684\u566a\u58f0\u6307\u6807\u5305\u62ec\u566a\u58f0\u7cfb\u6570(Noise Figure\uff0cNF)\u548c\u7b49\u6548\u8f93\u5165\u566a\u58f0\u5bc6\u5ea6(Equivalent Input Noise Density\uff0cEIND)\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001. \u566a\u58f0\u7cfb\u6570(Noise Figure\uff0cNF)\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u566a\u58f0\u7cfb\u6570\u662f\u7528\u6765\u8861\u91cf\u653e\u5927\u5668\u5f15\u5165\u7684\u566a\u58f0\u76f8\u5bf9\u4e8e\u4fe1\u53f7\u7684\u589e\u76ca\u3002\u566a\u58f0\u7cfb\u6570\u8d8a\u4f4e\uff0c\u8868\u793a\u653e\u5927\u5668\u7684\u6027\u80fd\u8d8a\u597d\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u566a\u58f0\u7cfb\u6570\u5e94\u8be5\u5c0f\u4e8e3dB\uff0c\u800c\u4f18\u79c0\u7684\u4f4e\u566a\u58f0\u653e\u5927\u5668\u53ef\u4ee5\u8fbe\u52300.5dB\u4ee5\u4e0b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002. \u7b49\u6548\u8f93\u5165\u566a\u58f0\u5bc6\u5ea6(Equivalent Input Noise Density\uff0cEIND)\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u7b49\u6548\u8f93\u5165\u566a\u58f0\u5bc6\u5ea6\u662f\u6307\u653e\u5927\u5668\u8f93\u5165\u7aef\u7684\u566a\u58f0\u529f\u7387\u5bc6\u5ea6\u3002\u5b83\u662f\u7528\u6765\u8861\u91cf\u653e\u5927\u5668\u8f93\u5165\u7aef\u5f15\u5165\u7684\u566a\u58f0\u6c34\u5e73\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u7b49\u6548\u8f93\u5165\u566a\u58f0\u5bc6\u5ea6\u8d8a\u4f4e\uff0c\u8868\u793a\u653e\u5927\u5668\u7684\u6027\u80fd\u8d8a\u597d\u3002\u5e38\u7528\u7684\u5355\u4f4d\u662fnV\/\u221aHz\uff0c\u4f18\u79c0\u7684\u4f4e\u566a\u58f0\u653e\u5927\u5668\u53ef\u4ee5\u8fbe\u5230\u51e0nV\/\u221aHz\u7684\u6c34\u5e73\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001\u9891\u7387\u54cd\u5e94\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000\u9891\u7387\u54cd\u5e94\u662f\u6307\u653e\u5927\u5668\u5bf9\u4e0d\u540c\u9891\u7387\u4fe1\u53f7\u7684\u589e\u76ca\u53d8\u5316\u60c5\u51b5\u3002\u5728\u9009\u62e9\u4f4e\u566a\u58f0\u653e\u5927\u5668\u65f6\uff0c\u9700\u8981\u8003\u8651\u5176\u9891\u7387\u54cd\u5e94\u7279\u6027\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u5e94\u8be5\u5177\u6709\u5e73\u5766\u7684\u9891\u7387\u54cd\u5e94\uff0c\u5373\u5728\u6574\u4e2a\u9891\u7387\u8303\u56f4\u5185\u4fe1\u53f7\u7684\u589e\u76ca\u53d8\u5316\u5e94\u8be5\u5c3d\u53ef\u80fd\u5c0f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001\u5e26\u5bbd\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000\u5e26\u5bbd\u662f\u6307\u653e\u5927\u5668\u80fd\u591f\u653e\u5927\u4fe1\u53f7\u7684\u9891\u7387\u8303\u56f4\u3002\u5728\u9009\u62e9\u4f4e\u566a\u58f0\u653e\u5927\u5668\u65f6\uff0c\u9700\u8981\u8003\u8651\u6240\u9700\u653e\u5927\u4fe1\u53f7\u7684\u9891\u7387\u8303\u56f4\u662f\u5426\u5728\u653e\u5927\u5668\u7684\u5e26\u5bbd\u8303\u56f4\u4e4b\u5185\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u5e26\u5bbd\u5e94\u8be5\u5c3d\u53ef\u80fd\u5bbd\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u5e94\u7528\u7684\u9700\u6c42\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001\u7ebf\u6027\u5ea6\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000\u7ebf\u6027\u5ea6\u662f\u6307\u653e\u5927\u5668\u5bf9\u8f93\u5165\u4fe1\u53f7\u7684\u975e\u7ebf\u6027\u5931\u771f\u7a0b\u5ea6\u3002\u4f4e\u566a\u58f0\u653e\u5927\u5668\u5e94\u5177\u6709\u826f\u597d\u7684\u7ebf\u6027\u5ea6\uff0c\u4ee5\u4fdd\u8bc1\u653e\u5927\u4fe1\u53f7\u7684\u51c6\u786e\u6027\u548c\u53ef\u9760\u6027\u3002\u5e38\u7528\u7684\u7ebf\u6027\u5ea6\u6307\u6807\u5305\u62ec\u7b2c\u4e09\u6b21\u8c10\u6ce2\u5931\u771f(Third Order Harmonic Distortion\uff0cTHD)\u548c\u622a\u81f3\u70b9(Clipping Point)\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e94\u3001\u529f\u8017\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000\u529f\u8017\u662f\u6307\u653e\u5927\u5668\u5728\u5de5\u4f5c\u8fc7\u7a0b\u4e2d\u6d88\u8017\u7684\u7535\u529b\u3002\u5728\u9009\u62e9\u4f4e\u566a\u58f0\u653e\u5927\u5668\u65f6\uff0c\u9700\u8981\u8003\u8651\u5176\u529f\u8017\u6c34\u5e73\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u529f\u8017\u5e94\u5c3d\u53ef\u80fd\u4f4e\uff0c\u4ee5\u51cf\u5c11\u80fd\u6e90\u6d88\u8017\u548c\u70ed\u91cf\u4ea7\u751f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000<strong>\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u4e3b\u8981\u6280\u672f\u6307\u6807\u5305\u62ec\u566a\u58f0\u7cfb\u6570\u3001\u7b49\u6548\u8f93\u5165\u566a\u58f0\u5bc6\u5ea6\u3001\u9891\u7387\u54cd\u5e94\u3001\u5e26\u5bbd\u3001\u7ebf\u6027\u5ea6\u548c\u529f\u8017\u3002\u5728\u9009\u62e9\u4f4e\u566a\u58f0\u653e\u5927\u5668\u65f6\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u5e94\u7528\u9700\u6c42\u7efc\u5408\u8003\u8651\u8fd9\u4e9b\u6307\u6807\u3002<\/strong>\u901a\u8fc7\u9009\u62e9\u5177\u6709\u4f18\u79c0\u6027\u80fd\u7684\u4f4e\u566a\u58f0\u653e\u5927\u5668\uff0c\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u4fe1\u566a\u6bd4\uff0c\u63d0\u5347\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4f4e\u566a\u58f0\u653e\u5927\u5668\u662f\u73b0\u4ee3\u7535\u5b50\u8bbe\u5907\u4e2d\u4e0d\u53ef\u6216\u7f3a\u7684\u7ec4\u6210\u90e8\u5206\u3002\u65e0\u8bba\u662f\u5728\u901a\u4fe1\u7cfb\u7edf\u8fd8\u662f\u5728\u79d1\u5b66\u7814\u7a76\u4e2d\uff0c\u4f4e\u566a\u58f0\u653e\u5927\u5668\u90fd\u626e\u6f14\u7740\u5173\u952e\u89d2\u8272\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecd\u4f4e\u566a\u58f0\u653e\u5927\u5668\u7684\u4e3b\u8981\u6280\u672f\u6307\u6807<\/p>\n","protected":false},"author":1,"featured_media":1028,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[117],"class_list":["post-33693","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzsfdq"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/33693","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=33693"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/33693\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/1028"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=33693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=33693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=33693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}