{"id":29966,"date":"2026-05-11T09:01:20","date_gmt":"2026-05-11T01:01:20","guid":{"rendered":"https:\/\/techclass.wfjydl.com\/?p=29966"},"modified":"2026-05-11T09:52:37","modified_gmt":"2026-05-11T01:52:37","slug":"%e4%bb%80%e4%b9%88%e6%98%af%e9%98%bb%e6%8a%97%e5%8c%b9%e9%85%8d%ef%bc%9f%e5%8a%9f%e7%8e%87%e4%bc%a0%e8%be%93%e5%92%8c%e9%98%b2%e6%ad%a2%e4%bf%a1%e5%8f%b7%e5%8f%8d%e5%b0%84%e7%9a%84%e7%90%86%e7%94%b1","status":"publish","type":"post","link":"https:\/\/techclass.wfjydl.com\/knowledge\/circuit-design\/circuit-design-basic\/27443","title":{"rendered":"\u4ec0\u4e48\u662f\u963b\u6297\u5339\u914d\uff1f\u529f\u7387\u4f20\u8f93\u548c\u9632\u6b62\u4fe1\u53f7\u53cd\u5c04\u7684\u7406\u7531\u53ca\u539f\u7406"},"content":{"rendered":"<p>\u963b\u6297\u5339\u914d\u662f\u4f7f\u7535\u8def\u95f4\u7684\u4fe1\u53f7\u548c\u529f\u7387\u5b9e\u73b0\u9ad8\u6548\u4f20\u8f93\u7684\u57fa\u672c\u6280\u672f\u3002\u4ece\u76f4\u6d41\u7684\u6700\u5927\u529f\u7387\u4f20\u8f93\u5230\u4ea4\u6d41\u7684\u53cd\u5c04\u548c\u5339\u914d\uff0c\u5982\u679c\u963b\u6297\u4e0d\u5339\u914d\uff0c\u5c31\u4f1a\u5bfc\u81f4\u5929\u7ebf\u65e0\u6cd5\u5145\u5206\u53d1\u5c04\u7535\u6ce2\u3001\u6570\u5b57\u4fe1\u53f7\u7d0a\u4e71\u4ee5\u53ca\u97f3\u9891\u8bbe\u5907\u97f3\u8d28\u4e0b\u964d\u7b49\u5404\u79cd\u95ee\u9898\u3002\u963b\u6297\u5339\u914d\u5bf9\u4e8eRF\u7535\u8def\uff08\u9ad8\u9891\u7535\u8def\uff09\u3001\u9ad8\u901f\u6570\u5b57\u7535\u8def\u548c\u97f3\u9891\u8bbe\u5907\u7b49\u5404\u7c7b\u7535\u5b50\u8bbe\u5907\u7684\u7a33\u5b9a\u8fd0\u884c\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u8fd0\u7528\u8ba1\u7b97\u65b9\u6cd5\uff0c\u5e76\u7ed3\u5408\u8eab\u8fb9\u7684\u5b9e\u4f8b\uff0c\u901a\u4fd7\u6613\u61c2\u5730\u4ecb\u7ecd\u963b\u6297\u5339\u914d\u7684\u76ee\u7684\u53ca\u5176\u610f\u4e49\u3001\u57fa\u672c\u539f\u7406\u548c\u5b9e\u9645\u5e94\u7528\u6848\u4f8b\u3002<\/p>\n<h2 id=\"toc1\">\u963b\u6297\u5339\u914d\u7684\u5b9a\u4e49\u548c\u6982\u8ff0<\/h2>\n<p>\u963b\u6297\u5339\u914d\u7684\u6838\u5fc3\u5728\u4e8e\u7535\u8def\u4e4b\u95f4\u7684\u5339\u914d\u3002\u901a\u8fc7\u8c03\u6574\u4fe1\u53f7\u6e90\u548c\u8d1f\u8f7d\u7684\u7279\u6027\uff0c\u53ef\u4ee5\u63d0\u5347\u529f\u7387\u4f20\u8f93\u6548\u7387\uff0c\u51cf\u5c11\u4fe1\u53f7\u53cd\u5c04\u3002\u5c31\u50cf\u6c34\u9f99\u5934\u548c\u6c34\u7ba1\u7684\u5c3a\u5bf8\u9700\u8981\u5339\u914d\u4e00\u6837\uff0c\u5728\u7535\u8def\u4e2d\u4e5f\u9700\u8981\u5339\u914d\u201c\u5c3a\u5bf8\u201d\u3002<\/p>\n<p><!-- \u753b\u50cf --><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/techclass.wfjydl.com\/wp-content\/uploads\/2026\/05\/01-concept-of-impedance-matching.png\" alt=\"\u901a\u8fc7\u6c34\u9f99\u5934\u4e0e\u6c34\u7ba1\u8fde\u63a5\u5c55\u793a\u7684\u963b\u6297\u5339\u914d\u6982\u5ff5\u56fe\" width=\"700\" height=\"394\" \/><\/p>\n<h3 id=\"toc2\">\u4ec0\u4e48\u662f\u963b\u6297\u5339\u914d\uff1f<\/h3>\n<p>\u963b\u6297\u5339\u914d\u662f\u4e00\u79cd\u5c06\u4fe1\u53f7\u6e90\u548c\u8d1f\u8f7d\u7684\u963b\u6297\u8fdb\u884c\u9002\u5f53\u8c03\u6574\u7684\u6280\u672f\u3002\u5728\u7535\u8def\u4e2d\uff0c\u5f53\u4e0d\u540c\u963b\u6297\u7684\u5668\u4ef6\u76f8\u4e92\u8fde\u63a5\u65f6\uff0c\u4f1a\u5bfc\u81f4\u90e8\u5206\u529f\u7387\u88ab\u53cd\u5c04\u56de\u6765\uff0c\u6216\u65e0\u6cd5\u5b9e\u73b0\u9ad8\u6548\u4f20\u8f93\u3002<\/p>\n<p>\u4f8b\u5982\uff0c\u5c0675\u03a9\u7684\u5668\u4ef6\u76f4\u63a5\u8fde\u63a5\u523050\u03a9\u7684\u540c\u8f74\u7535\u7f06\u4e0a\u65f6\uff0c\u7531\u4e8e\u963b\u6297\u4e0d\u540c\uff0c\u90e8\u5206\u4fe1\u53f7\u4f1a\u53d1\u751f\u53cd\u5c04\uff0c\u4ece\u800c\u65e0\u6cd5\u53d1\u6325\u5176\u5e94\u6709\u7684\u6027\u80fd\u3002\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\u7684\u6b63\u662f\u5339\u914d\u6280\u672f\uff0c\u5b83\u80fd\u591f\u5b9e\u73b0\u66f4\u4f18\u7684\u529f\u7387\u4f20\u8f93\u548c\u4fe1\u53f7\u8d28\u91cf\u3002<\/p>\n<h3 id=\"toc3\">\u4e3a\u4ec0\u4e48\u9700\u8981\u963b\u6297\u5339\u914d\uff08\u529f\u7387\u4f20\u8f93\u548c\u4fe1\u53f7\u53cd\u5c04\u4e24\u5927\u539f\u56e0\uff09<\/h3>\n<p>\u5339\u914d\u4e4b\u6240\u4ee5\u91cd\u8981\uff0c\u539f\u56e0\u6709\u4e24\u4e2a\u3002\u7b2c\u4e00\uff0c\u63d0\u9ad8\u529f\u7387\u4f20\u8f93\u6548\u7387\u3002\u5982\u679c\u4e0d\u5339\u914d\uff0c\u5927\u90e8\u5206\u529f\u7387\u4f1a\u5728\u4fe1\u53f7\u6e90\u5185\u90e8\u88ab\u6d88\u8017\u6389\u3002\u7b2c\u4e8c\uff0c\u9632\u6b62\u4fe1\u53f7\u53cd\u5c04\u3002\u53cd\u5c04\u4fe1\u53f7\u4f1a\u4e0e\u539f\u59cb\u4fe1\u53f7\u6df7\u5408\uff0c\u5bfc\u81f4\u6ce2\u5f62\u5931\u771f\u3002<\/p>\n<p><strong>\u529f\u7387\u4f20\u8f93\u6548\u7387<\/strong><\/p>\n<p>\u4ece\u4fe1\u53f7\u6e90\u5230\u8d1f\u8f7d\u7684\u529f\u7387\u4f20\u8f93\u4e2d\uff0c\u5b58\u5728\u4e24\u4e2a\u5e38\u88ab\u6df7\u6dc6\u7684\u5b9a\u4e49\u3002\u9996\u5148\u662f\u529f\u7387\u4f20\u8f93\u6bd4\\(\u03b7\\)\uff08\u901a\u5e38\u79f0\u4e3a\u201cpower delivery ratio\u201d\uff09\uff0c\u5b83\u7684\u5b9a\u4e49\u662f\u5b9e\u9645\u8d1f\u8f7d\u53ef\u83b7\u5f97\u7684\u529f\u7387\u4e0e\u6234\u7ef4\u5357\u7b49\u6548\u7535\u6e90\u5728\u4f18\u5316\u83b7\u53d6\u6761\u4ef6\u540e\u6240\u80fd\u63d0\u4f9b\u7684\u53ef\u7528\u529f\u7387\u4e4b\u6bd4\u3002\u5f53\u5c06\u4fe1\u53f7\u6e90\u963b\u6297\u548c\u8d1f\u8f7d\u963b\u6297\u89c6\u4e3a\u7eaf\u7535\u963b\\(R_S\\)\u548c\\(R_L\\)\u65f6\uff0c\u8be5\\(\u03b7\\)\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u03b7=\\displaystyle\\frac{4R_s R_L}{(R_s+R_L)^2}\\)<\/span><\/p>\n<p>\u5176\u4e2d\uff0c<\\(R_S\\)\u662f\u4fe1\u53f7\u6e90\u7684\u7535\u963b\u5206\u91cf\uff0c\\(R_L\\)\u662f\u8d1f\u8f7d\u7684\u7535\u963b\u5206\u91cf\u3002\u7531\u8be5\u516c\u5f0f\u53ef\u77e5\uff0c\u5f53\\(R_S\\)=\\(R_L\\)\u65f6\uff0c\\(\u03b7\\)=1\uff0c\u6b64\u65f6\u76f8\u5bf9\u4e8e\u53ef\u7528\u529f\u7387\u7684\u529f\u7387\u4f20\u8f93\u6bd4\u8fbe\u5230\u6700\u5927\uff08100%\uff09\u3002\u5728\u8fd9\u4e2a\u610f\u4e49\u4e0a\uff0c\\(R_S\\)=\\(R_L\\)\u5c31\u662f\u76f8\u5bf9\u4e8e\u53ef\u7528\u529f\u7387\u7684\u6700\u5927\u529f\u7387\u83b7\u53d6\u6761\u4ef6\u3002\n\n\u53e6\u4e00\u65b9\u9762\uff0c\u8fd8\u6709\u4e00\u4e2a\u662f\u5b9e\u9645\u6548\u7387\\(\u03b7\\)\uff0c\u5b83\u7684\u5b9a\u4e49\u662f\u8d1f\u8f7d\u6240\u6d88\u8017\u7684\u529f\u7387\u5360\u4fe1\u53f7\u6e90\u5b9e\u9645\u63d0\u4f9b\u7684\u603b\u529f\u7387\u7684\u6bd4\u4f8b\u3002\u540c\u6837\u89c6\u4e3a\u7eaf\u7535\u963b\\(R_S\\)\u548c\\(R_L\\)\u65f6\uff0c\\(\u03b7\\)\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1a\n\n<!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u03b7^\\ {\u2018}=\\displaystyle\\frac{R_L}{R_s+R_L}\\)<\/span><\/p>\n<p>\u7531\u4e0a\u5f0f\u5173\u7cfb\u53ef\u77e5\uff0c\u5f53\\(R_S\\)=\\(R_L\\)\u65f6\uff0c\\(\u03b7\\)&#8217;=0.5\uff0c\u5373\u4f9b\u7535\u529f\u7387\u768450%\u5728\u8d1f\u8f7d\u4e2d\u88ab\u6d88\u8017\uff0c\u5269\u4f5950%\u5219\u635f\u8017\u5728\u4fe1\u53f7\u6e90\u5185\u90e8\u3002\u56e0\u6b64\uff0c\u4ee5\u53ef\u7528\u529f\u7387\u4e3a\u57fa\u51c6\u7684\u529f\u7387\u4f20\u8f93\u6bd4\\(\u03b7\\)\u548c\u4ee5\u4f9b\u7535\u529f\u7387\u4e3a\u57fa\u51c6\u7684\u5b9e\u9645\u6548\u7387\\(\u03b7\\)\u2018\uff0c\u4e24\u8005\u7684\u5b9a\u4e49\u548c\u6570\u503c\u5747\u4e0d\u76f8\u540c\uff0c\u6ce8\u610f\u4e0d\u8981\u6df7\u6dc6\u3002<\/p>\n<p>\u5728\u5b9e\u9645\u7684\u9ad8\u9891\u7535\u8def\u6216\u5305\u542b\u4f20\u8f93\u7ebf\u7684\u7cfb\u7edf\u4e2d\uff0c\u4fe1\u53f7\u6e90\u963b\u6297\\(Z_S\\)\u548c\u8d1f\u8f7d\u963b\u6297\\(Z_L\\)\u901a\u5e38\u662f\u590d\u963b\u6297\uff0c\u4e0d\u4ec5\u9700\u8981\u8003\u8651\u7535\u963b\u5206\u91cf\uff0c\u8fd8\u9700\u8981\u8003\u8651\u7535\u6297\u5206\u91cf\u3002\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u201c\u8d1f\u8f7d\u4e2d\u53ef\u83b7\u53d6\u7684\u529f\u7387\u8fbe\u5230\u6700\u5927\u7684\u6761\u4ef6\u201d\u662f\u7531\u8d1f\u8f7d\u963b\u6297\u548c\u4fe1\u53f7\u6e90\u963b\u6297\u5448\u5171\u8f6d\u5173\u7cfb\u7684\u5171\u8f6d\u5339\u914d\u6761\u4ef6\u7ed9\u51fa\u7684\u3002<\/p>\n<p><!-- 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class=\"mathjax-text\">\\(Z_L=Z_s^*\\)<\/span><\/p>\n<p>\u8be5\u6761\u4ef6\u5c31\u662f\u542b\u6709\u590d\u963b\u6297\u7684\u4e00\u822c\u7cfb\u7edf\u4e2d\u5b9e\u73b0\u6700\u5927\u529f\u7387\u4f20\u8f93\u7684\u6761\u4ef6\u3002\u4f46\u662f\uff0c\u6b64\u65f6\u7684\\(\u03b7\\)\u548c\\(\u03b7\\)\u2018\u4f1a\u53d8\u6210\u4f7f\u7528\\(Z_S\\)\u548c\\(Z_L\\)\u7684\u5b9e\u90e8\u6216\u7edd\u5bf9\u503c\u7684\u53e6\u4e00\u79cd\u8868\u8fbe\u5f0f\uff0c\u4e0d\u80fd\u5c06\u4e0a\u8ff0\u201c\u5047\u8bbe\u4e3a\u7eaf\u7535\u963b\\(R_S\\)\u548c\\(R_L\\)\u63a8\u5bfc\u51fa\u7684\u7b80\u5316\u516c\u5f0f\u201d\u76f4\u63a5\u66ff\u6362\u6210\\(Z_S\\)\u3001\\(Z_L\\)\u6765\u5e94\u7528\u3002\u590d\u963b\u6297\u7cfb\u7edf\u4e2d\u7684\u7cbe\u786e\u6548\u7387\u516c\u5f0f\u66f4\u4e3a\u590d\u6742\uff0c\u6b64\u5904\u4e0d\u4f5c\u5c55\u5f00\uff0c\u4ec5\u5f3a\u8c03\u901a\u8fc7\u7eaf\u7535\u963b\u8fd1\u4f3c\u5f97\u5230\u7684\u516c\u5f0f\uff0c\u5176\u9002\u7528\u8303\u56f4\u662f\u6709\u9650\u7684\u3002<\/p>\n<p>\u6b64\u5916\uff0c\u5f53\u5728\u7ebf\u8def\u4e2d\u95f4\u63d2\u5165\u4f20\u8f93\u7ebf\u65f6\uff0c\u57fa\u672c\u7684\u8bbe\u8ba1\u539f\u5219\u662f\u5c06\u8d1f\u8f7d\u4fa7\u7684\u5339\u914d\u6761\u4ef6\u8bbe\u5b9a\u4e3a\u4e0e\u4f20\u8f93\u7ebf\u7684\u7279\u6027\u963b\u6297\\(Z_0\\)\u76f8\u5339\u914d\uff0c\u5373\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_L=Z_0\\)<\/span><\/p>\n<p>\u5982\u679c\u5c06\u4fe1\u53f7\u6e90\u4fa7\u7684\u963b\u6297\u4e5f\u8bbe\u7f6e\u4e3a\u4ee5\u4e0b\u6761\u4ef6\uff0c\u90a3\u4e48\u56e0\u7ebf\u8def\u4e2d\u9014\u4e0d\u5339\u914d\u7b49\u539f\u56e0\u800c\u4ea7\u751f\u8fc7\u7684\u53cd\u5c04\u6ce2\u4e0d\u4f1a\u5728\u4fe1\u53f7\u6e90\u7aef\u53d1\u751f\u4e8c\u6b21\u53cd\u5c04\u800c\u662f\u88ab\u5438\u6536\u6389\uff0c\u4ece\u800c\u4f7f\u5305\u542b\u5f80\u8fd4\u5728\u5185\u7684\u6574\u4e2a\u7cfb\u7edf\u83b7\u5f97\u826f\u597d\u7684\u5339\u914d\u3002\u6362\u53e5\u8bdd\u8bf4\uff0c\u5305\u62ec\u4f20\u8f93\u7ebf\u5728\u5185\u7684\u6574\u4e2a\u7cfb\u7edf\u5c06\u5904\u4e8e\u201c\u4e0e\u7279\u6027\u963b\u6297\\(Z_0\\)\u76f8\u5339\u914d\u201d\u7684\u72b6\u6001\uff0c\u8fdb\u800c\u786e\u4fdd\u80fd\u591f\u517c\u987e\u529f\u7387\u4f20\u8f93\u6548\u7387\u548c\u6ce2\u5f62\u7684\u4fdd\u771f\u5ea6\u3002<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_s=Z_0\\)<\/span><\/p>\n<p><strong>\u4fe1\u53f7\u53cd\u5c04\u673a\u5236<\/strong><\/p>\n<p>\u5728\u963b\u6297\u4e0d\u8fde\u7eed\u70b9\u5904\uff0c\u4f1a\u53d1\u751f\u53cd\u5c04\uff0c\u7528\u53cd\u5c04\u7cfb\u6570\\(\u0393\\)\u8868\u793a\u3002<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0393=\\displaystyle\\frac{Z_L-Z_0}{Z_L+Z_0}\\)<\/span><\/p>\n<p>\u5b8c\u5168\u5339\u914d\u65f6\uff08\\(Z_L\\)=\\(Z_0\\)\uff09\uff0c|\\(\u0393\\)|=0\uff0c\u65e0\u53cd\u5c04\uff1b\u5b8c\u5168\u4e0d\u5339\u914d\u65f6\uff08\\(Z_L\\)=\u221e\u62160\uff09\uff0c|\\(\u0393\\)|=1\uff0c\u53d1\u751f\u5168\u53cd\u5c04\u3002\u8fd9\u79cd\u53cd\u5c04\u53ef\u80fd\u5bfc\u81f4\u4fe1\u53f7\u8d28\u91cf\u4e0b\u964d\u3001\u529f\u7387\u6548\u7387\u964d\u4f4e\uff0c\u4e25\u91cd\u65f6\u751a\u81f3\u8fd8\u53ef\u80fd\u635f\u574f\u53d1\u5c04\u673a\u3002\u867d\u7136\u6709\u4e9b\u9ad8\u7aef\u97f3\u9891\u7ebf\u7f06\u4e2d\uff0c\u6709\u4e9b\u4ea7\u54c1\u58f0\u79f0\u80fd\u964d\u4f4e\u53cd\u5c04\uff0c\u4f46\u5373\u4f7f\u662f\u6602\u8d35\u7684\u4ea7\u54c1\uff0c\u97f3\u8d28\u5dee\u5f02\u7684\u4e3b\u56e0\u4e5f\u672a\u5fc5\u603b\u662f\u963b\u6297\u5339\u914d\uff08\u8fd8\u6d89\u53ca\u7ebf\u6750\u3001\u7ed3\u6784\u3001\u63a5\u89e6\u53ca\u6d4b\u91cf\u6761\u4ef6\u7b49\u7efc\u5408\u56e0\u7d20\uff09\u3002<\/p>\n<p>\u5728\u9ad8\u901f\u6570\u5b57\u7535\u8def\u4e2d\uff0c\u53cd\u5c04\u5bfc\u81f4\u7684\u518d\u9a71\u52a8\u5de5\u4f5c\u53ef\u80fd\u4f1a\u9020\u6210\u989d\u5916\u635f\u8017\uff0c\u4f46IC\u7684\u4e3b\u8981\u53d1\u70ed\u539f\u56e0\u662f\u5f00\u5173\u635f\u8017\uff0c\u5982\u4e0b\u5f0f\u6240\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(P=\u03b1CV^2 f\\)<\/span><\/p>\n<p>\\(\u03b1\\)\u4e3a\u7ffb\u8f6c\u7387\uff0c\u4e0e\u4e4b\u76f8\u6bd4\uff0c\u53cd\u5c04\u635f\u8017\u901a\u5e38\u5c5e\u4e8e\u6b21\u8981\u56e0\u7d20\u3002<\/p>\n<h2 id=\"toc4\">\u963b\u6297\u4e0d\u5339\u914d\u5f15\u53d1\u7684\u95ee\u9898<\/h2>\n<p>\u963b\u6297\u4e0d\u5339\u914d\u4f1a\u964d\u4f4e\u7535\u8def\u6027\u80fd\uff0c\u5bfc\u81f4\u529f\u7387\u88ab\u767d\u767d\u6d88\u8017\u3001\u4fe1\u53f7\u5931\u771f\u3001\u8bbe\u5907\u6545\u969c\u3002\u8fd9\u4e9b\u95ee\u9898\u90fd\u53ef\u80fd\u7531\u963b\u6297\u4e0d\u5339\u914d\u6240\u5f15\u8d77\u3002\u624b\u673a\u7535\u6c60\u8017\u7535\u5feb\u3001\u97f3\u9891\u97f3\u8d28\u4e0b\u964d\u7b49\u90fd\u662f\u751f\u6d3b\u4e2d\u5e38\u89c1\u7684\u4f8b\u5b50\u3002<\/p>\n<h3 id=\"toc5\">\u529f\u7387\u635f\u8017\u4e0e\u4f20\u8f93\u6548\u7387\u4e0b\u964d<\/h3>\n<p>\u963b\u6297\u4e0d\u5339\u914d\u4f1a\u589e\u52a0\u529f\u7387\u635f\u8017\uff0c\u5bfc\u81f4\u4f20\u8f93\u6548\u7387\u4e0b\u964d\u3002\u5728\u5b8c\u5168\u4e0d\u5339\u914d\u7684\u60c5\u51b5\u4e0b\uff0c\u751a\u81f3\u53ef\u80fd\u51fa\u73b0\u529f\u7387\u5b8c\u5168\u65e0\u6cd5\u4f20\u8f93\u7684\u60c5\u51b5\u3002\u56e0\u4e3a\u53d1\u9001\u51fa\u53bb\u7684\u5927\u90e8\u5206\u529f\u7387\u8981\u4e48\u5728\u4fe1\u53f7\u6e90\u5185\u90e8\u4ee5\u70ed\u91cf\u5f62\u5f0f\u88ab\u6d88\u8017\uff0c\u8981\u4e48\u56e0\u53cd\u5c04\u800c\u8fd4\u56de\u3002\u5728RF\u653e\u5927\u5668\u4e2d\uff0c\u4e0d\u5339\u914d\u4f1a\u5bfc\u81f4\u53d1\u70ed\u589e\u52a0\uff0c\u7f29\u77ed\u5668\u4ef6\u5bff\u547d\u3002<\/p>\n<p><strong>\u529f\u7387\u635f\u8017\u7684\u5b9a\u91cf\u8bc4\u4f30<\/strong><\/p>\n<p>\u4f20\u8f93\u529f\u7387\u548c\u53cd\u5c04\u529f\u7387\u4e4b\u95f4\u7684\u5173\u7cfb\u53ef\u4ee5\u7528\u53cd\u5c04\u7cfb\u6570|\\(\u0393\\)|\u6765\u8868\u793a\u3002<\/p>\n<p>\u53cd\u5c04\u529f\u7387\u53ef\u7531\u4e0b\u5f0f\u6c42\u5f97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u53cd\u5c04\u529f\u7387=|\u0393|^2\u00d7\u5165\u5c04\u529f\u7387\\)<\/span><\/p>\n<p>\u4f20\u8f93\u529f\u7387\u53ef\u7531\u4e0b\u5f0f\u6c42\u5f97\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u4f20\u8f93\u529f\u7387=(1-|\u0393|^2 )\u00d7\u5165\u5c04\u529f\u7387\\)<\/span><\/p>\n<p>\u4f8b\u5982\uff0c\u572850\u03a9\u7cfb\u7edf\u4e2d\u8fde\u63a525\u03a9\u8d1f\u8f7d\u65f6\u7684\u8ba1\u7b97\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0393=\\displaystyle\\frac{25-50}{25+50}=\\displaystyle\\frac{-25}{75}=-\\displaystyle\\frac{1}{3}\\)<\/span><\/p>\n<p><span class=\"mathjax-text\">\\(|\u0393|^2=\\displaystyle\\frac{1}{9}\u22480.11\\)<\/span><\/p>\n<p>\u4e5f\u5c31\u662f\u8bf4\uff0c\u5165\u5c04\u529f\u7387\u4e2d\u7ea6\u670911%\u88ab\u53cd\u5c04\uff0c\u53ea\u6709\u7ea689%\u4f20\u8f93\u5230\u8d1f\u8f7d\u3002<\/p>\n<p><strong>\u5728\u5b9e\u9645\u7535\u8def\u4e2d\u7684\u5f71\u54cd<\/strong><\/p>\n<p>\u5728\u624b\u673a\u53d1\u5c04\u7535\u8def\u4e2d\uff0c\u5929\u7ebf\u4e0d\u5339\u914d\u4f1a\u5f15\u53d1\u4ee5\u4e0b\u95ee\u9898\uff1a<\/p>\n<ul class=\"unordered-list\">\n<li>\u7535\u6c60\u8017\u7535\u53d8\u5feb\uff08\u53cd\u5c04\u529f\u7387\u5728\u53d1\u5c04\u673a\u4e2d\u4ee5\u70ed\u91cf\u5f62\u5f0f\u88ab\u6d88\u8017\uff09<\/li>\n<li>\u53d1\u5c04\u8f93\u51fa\u964d\u4f4e\uff08\u6709\u6548\u8f90\u5c04\u529f\u7387\u51cf\u5c11\uff09<\/li>\n<li>PA\uff08\u529f\u7387\u653e\u5927\u5668\uff09\u8fc7\u70ed\u5bfc\u81f4\u4fdd\u62a4\u7535\u8def\u5de5\u4f5c<\/li>\n<\/ul>\n<p>\u7279\u522b\u662f\u5f53VSWR\uff08\u7535\u538b\u9a7b\u6ce2\u6bd4\uff09=3\uff1a1\uff08|\\(\u0393<\\)|=0.5\uff09\u65f6\uff0c\u5165\u5c04\u89d225%\u7684\u529f\u7387\u4f1a\u88ab\u53cd\u5c04\uff0c\u4f20\u8f93\u5230\u8d1f\u8f7d\u7684\u529f\u7387\u5219\u964d\u81f375%\u3002\u6b64\u5916\uff0c\u5982\u679c\u53d1\u5c04\u673a\u7aef\u542f\u52a8\u4fdd\u62a4\u52a8\u4f5c\u6216\u8f93\u51fa\u63a7\u5236\uff0c\u6709\u6548\u8f90\u5c04\u529f\u7387\u53ef\u80fd\u4f1a\u8fdb\u4e00\u6b65\u4e0b\u964d\uff0c \u8fd9\u5c31\u662f\u5929\u7ebf\u5339\u914d\u5907\u53d7\u91cd\u89c6\u7684\u539f\u56e0\u3002\n\n\n<h3 id=\"toc6\">\u4ec0\u4e48\u662f\u4fe1\u53f7\u53cd\u5c04\u548cVSWR\uff08\u7535\u538b\u9a7b\u6ce2\u6bd4\uff09<\/h3>\n<p>\u4fe1\u53f7\u53cd\u5c04\u662f\u6307\u5728\u963b\u6297\u8fb9\u754c\u5904\uff0c\u90e8\u5206\u4fe1\u53f7\u53d1\u751f\u53cd\u5411\u56de\u5f39\u7684\u73b0\u8c61\u3002\u53cd\u5c04\u4fe1\u53f7\u4e0e\u539f\u59cb\u4fe1\u53f7\u76f8\u4e92\u53e0\u52a0\u5f62\u6210\u9a7b\u6ce2\uff0c\u5bfc\u81f4\u4fe1\u53f7\u7684\u632f\u5e45\u968f\u4f4d\u7f6e\u53d1\u751f\u53d8\u5316\u3002<\/p>\n<p>VSWR\u662f\u5c06\u53cd\u5c04\u7a0b\u5ea6\u8fdb\u884c\u91cf\u5316\u7684\u6307\u6807\uff0c\u5176\u503c\u8d8a\u63a5\u8fd11.0\u8d8a\u597d\u3002\u5728\u9ad8\u901f\u6570\u5b57\u7535\u8def\u4e2d\uff0c\u8fd9\u79cd\u53cd\u5c04\u6709\u65f6\u8fd8\u4f1a\u5bfc\u81f4\u6570\u636e\u9519\u8bef\u3002<\/p>\n<p><strong>VSWR\u548c\u53cd\u5c04\u7cfb\u6570\u7684\u5173\u7cfb<\/strong><\/p>\n<p>VSWR\u7684\u5b9a\u4e49\u5f0f\u5982\u4e0b\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(VSWR=\\displaystyle\\frac{1+|\u0393|}{1-|\u0393|}\\)<\/span><\/p>\n<p>\u53cd\u4e4b\uff0c\u4e5f\u53ef\u4ee5\u6839\u636eVSWR\u6c42\u51fa\u53cd\u5c04\u7cfb\u6570\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(|\u0393|=\\displaystyle\\frac{VSWR-1}{VSWR+1}\\)<\/span><\/p>\n<p><strong>\u5b9e\u7528\u6307\u6807<\/strong><\/p>\n<ul class=\"unordered-list\">\n<li>VSWR=1.0\uff1a\u5b8c\u5168\u5339\u914d\uff08|\\(\u0393<\\)|=0\u3001\u53cd\u5c04\u529f\u7387=0%\uff09<\/li>\n<li>VSWR=1.5\uff1a\u826f\u597d\uff08|\\(\u0393<\\)|=0.2\u3001\u53cd\u5c04\u529f\u7387=4%\uff09<\/li>\n<li>VSWR=2.0\uff1a\u7565\u5dee\uff08|\\(\u0393<\\)|=0.33\u3001\u53cd\u5c04\u529f\u7387=11%\uff09<\/li>\n<li>VSWR=3.0\uff1a\u5dee\uff08|\\(\u0393<\\)|=0.5\u3001\u53cd\u5c04\u529f\u7387=25%\uff09<\/li>\n<\/ul>\n<p><strong>\u5bf9\u9ad8\u901f\u6570\u5b57\u7535\u8def\u7684\u5f71\u54cd<\/strong><\/p>\n<p>PCB\u8d70\u7ebf\u4e2d\u5b58\u5728\u963b\u6297\u4e0d\u5339\u914d\u65f6\uff0c\u4f1a\u5bfc\u81f4\u65f6\u949f\u8fb9\u7f18\u53d8\u7f13\u548c\u773c\u56fe\u52a3\u5316\u3002\u7279\u522b\u662f\u5728DDR4\u5b58\u50a8\u5668\u8fd9\u7c7b\u9ad8\u901f\u4fe1\u53f7\u4e2d\uff0c\u5373\u4f7f\u662f\u5fae\u5c0f\u7684\u53cd\u5c04\u4e5f\u53ef\u80fd\u5f15\u53d1\u5efa\u7acb\u548c\u4fdd\u6301\u65f6\u95f4\u8fdd\u89c4\uff0c\u4ece\u800c\u9020\u6210\u6570\u636e\u9519\u8bef\u3002<\/p>\n<h2 id=\"toc7\">\u963b\u6297\u5339\u914d\u7684\u5178\u578b\u5e94\u7528\u6848\u4f8b<\/h2>\n<p>\u963b\u6297\u5339\u914d\u5e76\u975e\u662f\u4ec0\u4e48\u7279\u522b\u7684\u6280\u672f\uff0c\u5b83\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u667a\u80fd\u624b\u673a\u901a\u4fe1\u3001\u7535\u8111\u5904\u7406\u901f\u5ea6\u548c\u97f3\u4e50\u64ad\u653e\u8d28\u91cf\u7b49\u65e5\u5e38\u7535\u5b50\u8bbe\u5907\u4e2d\u3002\u4ece\u65e0\u7ebf\u901a\u4fe1\u768450\u03a9\u6807\u51c6\uff0c\u5230\u6570\u5b57\u7535\u8def\u7684\u7aef\u63a5\u5904\u7406\u4ee5\u53ca\u97f3\u9891\u7684\u97f3\u8d28\u63d0\u5347\uff0c\u8ba9\u6211\u4eec\u901a\u8fc7\u5177\u4f53\u4e8b\u4f8b\u6765\u7406\u89e3\u5176\u5e94\u7528\u3002<\/p>\n<h3 id=\"toc8\">RF\u7535\u8def\u548c\u5929\u7ebf\uff0850\u03a9\u7cfb\u7edf\uff09<\/h3>\n<p>RF\u7535\u8def\u662f\u5904\u7406\u9ad8\u9891\u4fe1\u53f7\u7684\u7535\u8def\uff0c\u7531\u653e\u5927\u5668\u3001\u6ee4\u6ce2\u5668\u548c\u6df7\u9891\u5668\u7b49\u5668\u4ef6\u7ec4\u6210\u3002\u5728\u8fd9\u4e9bRF\u7535\u8def\u4e2d\uff0c50\u03a9\u5df2\u88ab\u786e\u7acb\u4e3a\u6807\u51c6\u963b\u6297\u3002\u8fd9\u662f\u4f5c\u4e3a\u63d0\u5347\u540c\u8f74\u7535\u7f06\u635f\u8017\u4e0e\u529f\u7387\u5904\u7406\u80fd\u529b\u4e24\u8005\u4e4b\u95f4\u5e73\u8861\u7684\u7ed3\u679c\u800c\u88ab\u9009\u5b9a\u7684\u3002\u901a\u8fc7\u5c06RF\u653e\u5927\u5668\u7684\u8f93\u5165\u8f93\u51fa\u3001\u5929\u7ebf\u548c\u7535\u7f06\u5168\u90e8\u7edf\u4e00\u4e3a50\u03a9\uff0c\u53ef\u4ee5\u63d0\u5347\u6574\u4e2a\u7cfb\u7edf\u7684\u6548\u7387\u3002<\/p>\n<p><strong>RF\u653e\u5927\u5668\u7684\u8bbe\u8ba1\u793a\u4f8b<\/strong><\/p>\n<p>\u5728900MHz\u9891\u6bb5\u7684RF\u653e\u5927\u5668\u8bbe\u8ba1\u4e2d\uff0c\u53ef\u6309\u4ee5\u4e0b\u6b65\u9aa4\u8fdb\u884c\uff1a<\/p>\n<ol class=\"ordered-list\">\n<li>\u8f93\u5165\u5339\u914d\uff1a\u5c06\u6765\u81ea\u5929\u7ebf\u768450\u03a9\u4fe1\u53f7\u4e0e\u653e\u5927\u5668\u7684\u8f93\u5165\u963b\u6297\u5339\u914d<\/li>\n<li>\u8f93\u51fa\u5339\u914d\uff1a\u5c06\u653e\u5927\u5668\u8f93\u51fa\u4e0e50\u03a9\u8d1f\u8f7d\u5339\u914d<\/li>\n<li>\u786e\u4fdd\u7a33\u5b9a\u6027\uff1a\u8fdb\u884c\u963b\u6297\u8c03\u6574\u4ee5\u9632\u6b62\u632f\u8361<\/li>\n<\/ol>\n<p>\u6d4b\u91cf\u653e\u5927\u5668\u7684S\u53c2\u6570\uff08S11\u3001S21\u3001S12\u3001S22\uff09\uff0c\u5e76\u4f7f\u7528\u53f2\u5bc6\u65af\u5706\u56fe\u6765\u8bbe\u8ba1\u5339\u914d\u7535\u8def\u3002\u4e00\u822c\u901a\u8fc7LC\u7ec4\u5408\u6216\u5fae\u5e26\u7ebf\u7684\u77ed\u622a\u7ebf\u6765\u5b9e\u73b0\u3002<\/p>\n<p><strong>\u5929\u7ebf\u5339\u914d<\/strong><\/p>\n<p>\u534a\u6ce2\u5076\u6781\u5929\u7ebf\u7684\u7406\u8bba\u8f90\u5c04\u7535\u963b\u7ea6\u4e3a73\u03a9\uff0c\u4f46\u5728\u5b9e\u9645\u8bbe\u8ba1\u4e2d\uff0c\u4f1a\u901a\u8fc7\u9988\u7535\u70b9\u8c03\u6574\u6216\u5339\u914d\u7535\u8def\u5c06\u5176\u8c03\u6574\u523050\u03a9\u3002\u5728\u624b\u673a\u7b49\u8bbe\u5907\u4e2d\uff0c\u4e00\u822c\u662f\u901a\u8fc7\u82af\u7247\u5929\u7ebf\u548c\u5339\u914d\u7535\u8def\u7684\u7ec4\u5408\u6765\u5b9e\u73b050\u03a9\u5339\u914d\u7684\u3002<\/p>\n<h3 id=\"toc9\">\u9ad8\u901f\u6570\u5b57\u4fe1\u53f7\uff08\u7aef\u63a5\u7535\u963b\uff09<\/h3>\n<p>\u5728\u73b0\u4ee3\u6570\u5b57\u8bbe\u5907\u4e2d\uff0c\u6570GHz\u7684\u9ad8\u901f\u4fe1\u53f7\u5728\u7535\u8def\u677f\u4e0a\u5feb\u901f\u4f20\u8f93\u3002\u4e3a\u4e86\u51c6\u786e\u4f20\u8f93\u8fd9\u4e9b\u4fe1\u53f7\uff0c\u9700\u8981\u5bf9\u5370\u5237\u7535\u8def\u677f\u7684\u8d70\u7ebf\u963b\u6297\u548c\u7aef\u63a5\u7535\u963b\u8fdb\u884c\u8bbe\u8ba1\u3002\u5373\u4f7f\u662f\u5fae\u5c0f\u7684\u53cd\u5c04\u4e5f\u53ef\u80fd\u5f15\u53d1\u6570\u636e\u9519\u8bef\uff0c\u56e0\u6b64\u9700\u8981\u901a\u8fc7\u7aef\u63a5\u7535\u963b\u6765\u6291\u5236\u4fe1\u53f7\u53cd\u5c04\u3002<\/p>\n<p><strong>\u7aef\u63a5\u65b9\u5f0f\u7684\u79cd\u7c7b<\/strong><\/p>\n<ol class=\"ordered-list\">\n<li><strong>\u5e76\u8054\u7aef\u63a5<\/strong>\uff1a\u5728\u4fe1\u53f7\u7ebf\u672b\u7aef\u8fde\u63a550\u03a9\u7535\u963b\n<ul class=\"unordered-list\">\n<li>\u4f18\u70b9\uff1a\u7b80\u5355\u53ef\u9760<\/li>\n<li>\u7f3a\u70b9\uff1a\u6709DC\u7535\u6d41\u6d41\u8fc7\uff0c\u529f\u8017\u8f83\u5927<\/li>\n<\/ul>\n<\/li>\n<li><strong>\u6234\u7ef4\u5357\u7aef\u63a5<\/strong>\uff1a\u91c7\u7528VCC-R1-\u4fe1\u53f7\u7ebf-R2-GND\u7684\u5206\u538b\u7535\u8def\n<ul class=\"unordered-list\">\n<li>\u4f18\u70b9\uff1a\u53ef\u6291\u5236DC\u7535\u6d41<\/li>\n<li>\u7f3a\u70b9\uff1a\u9700\u89812\u4e2a\u7535\u963b<\/li>\n<\/ul>\n<\/li>\n<li><strong>AC\u7d42\u7aef<\/strong>\uff1a\u7535\u963b\u4e0e\u7535\u5bb9\u7684\u4e32\u8054\u7535\u8def\n<ul class=\"unordered-list\">\n<li>\u4f18\u70b9\uff1a\u65e0DC\u7535\u6d41<\/li>\n<li>\u7f3a\u70b9\uff1a\u5177\u6709\u9891\u7387\u4f9d\u8d56\u6027<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p><strong>DDR4\u5b58\u50a8\u5668\u793a\u4f8b<\/strong><\/p>\n<p>DDR4\u7684\u8d70\u7ebf\u963b\u6297\u548c\u7aef\u63a5\uff08ODT\uff09\u4f1a\u6839\u636e\u4fe1\u53f7\u7c7b\u578b\uff08DQ\/DQS\/CA\/CLK\uff09\u3001\u5dee\u5206\u548c\u5355\u7aef\u3001\u5b89\u88c5\u6761\u4ef6\uff0c\u5728\u8bbe\u8ba1\u8d44\u6599\u4e2d\u89c4\u5b9a\u5176\u76ee\u6807\u503c\u53ca\u5bb9\u8bb8\u8303\u56f4\u3002\u4f8b\u5982\uff0c\u4f5c\u4e3a\u8bbe\u8ba1\u76ee\u6807\u7684\u4e00\u4e2a\u793a\u4f8b\uff0c\u4f1a\u5c06\u5355\u7aef\u8d70\u7ebf\u63a7\u5236\u572840\u03a9\u7ea7\u522b\uff0c\u5e76\u4ece\u591a\u4e2aODT\u9009\u9879\uff08\u4f8b\u598260\u03a9\/120\u03a9\/240\u03a9\u7b49\uff09\u4e2d\u9009\u62e9\u7aef\u63a5\u4ee5\u6291\u5236\u53cd\u5c04\u3002\u901a\u8fc7\u5728CPU\u4fa7\u548c\u5b58\u50a8\u5668\u4fa7\u540c\u65f6\u8c03\u6574\u7aef\u63a5\u6761\u4ef6\uff0c\u5c06\u5f80\u8fd4\u53cd\u5c04\u964d\u81f3\u66f4\u4f4e\u3002<\/p>\n<h3 id=\"toc10\">\u97f3\u9891\u8bbe\u5907\uff08\u4f4e\u963b\u6297\u8f93\u51fa\uff0c\u9ad8\u963b\u6297\u8f93\u5165\uff09<\/h3>\n<p>\u5728\u97f3\u9891\u9886\u57df\uff0c\u201c\u4f4e\u963b\u6297\u8f93\u51fa\uff0c\u9ad8\u963b\u6297\u8f93\u5165\u201d\u662f\u57fa\u672c\u539f\u5219\u3002\u901a\u8fc7\u5c06\u8f93\u51fa\u4fa7\u7684\u963b\u6297\u8bbe\u7f6e\u5f97\u8f83\u4f4e\uff0c\u8f93\u5165\u4fa7\u7684\u963b\u6297\u8bbe\u7f6e\u5f97\u8f83\u9ad8\uff0c\u53ef\u4ee5\u6291\u5236\u4fe1\u53f7\u7684\u6076\u5316\u3002\u901a\u5e38\u9700\u4fdd\u630110\u500d\u4ee5\u4e0a\u7684\u6bd4\u4f8b\uff0c\u4f8b\u5982\u9ea6\u514b\u98ce\u7684\u8f93\u51fa\u963b\u6297\u4e3a\u6570\u767e\u03a9\uff0c\u800c\u653e\u5927\u5668\u7684\u8f93\u5165\u963b\u6297\u5219\u4e3a\u6570\u5341k\u03a9\u3002<\/p>\n<p><strong>\u4f4e\u963b\u6297\u8f93\u51fa\uff0c\u9ad8\u963b\u6297\u8f93\u5165\u7406\u8bba<\/strong><\/p>\n<p>\u8bbe\u4fe1\u53f7\u6e90\u7684\u8f93\u51fa\u963b\u6297\u4e3a\\(R_o\\)\uff0c\u8d1f\u8f7d\u7684\u8f93\u5165\u963b\u6297\u4e3a\\(R_i\\)\uff0c\u5219\u7535\u538b\u5206\u538b\u6bd4\u53ef\u7531\u4e0b\u5f0f\u8868\u793a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\\displaystyle\\frac{V_{out}}{V_{in}} = \\displaystyle\\frac{R_i}{R_o+R_i}\\)<\/span><\/p>\n<p>\u5728\\(R_i\\) &gt;&gt; \\(R_o\\)\u7684\u6761\u4ef6\u4e0b\uff0c\\(V_{out}\\)\u2248\\(V_{in}\\)\uff0c\u53ef\u4ee5\u5c06\u4fe1\u53f7\u8870\u51cf\u964d\u81f3\u8d85\u4f4e\u3002\u6b64\u5916\uff0c\u5373\u4f7f\u5e76\u8054\u8fde\u63a5\u591a\u4e2a\u8d1f\u8f7d\uff0c\u4e5f\u80fd\u6291\u5236\u5bf9\u5404\u4e2a\u8d1f\u8f7d\u7684\u5f71\u54cd\u3002<\/p>\n<p><strong>\u97f3\u9891\u8bbe\u5907\u7684\u5b9e\u4f8b<\/strong><\/p>\n<ul class=\"unordered-list\">\n<li>\u52a8\u5708\u9ea6\u514b\u98ce\uff1a\u8f93\u51fa\u963b\u6297 200-600\u03a9<\/li>\n<li>\u7535\u5bb9\u9ea6\u514b\u98ce\uff1a\u8f93\u51fa\u963b\u6297 50-200\u03a9\uff08\u5185\u7f6e\u524d\u7f6e\u653e\u5927\u5668\uff09<\/li>\n<li>\u8c03\u97f3\u53f0\u8f93\u5165\uff1a\u8f93\u5165\u963b\u6297 1-10k\u03a9<\/li>\n<li>\u7ebf\u8def\u7535\u5e73\u8f93\u51fa\uff1a\u8f93\u51fa\u963b\u6297 50-600\u03a9<\/li>\n<li>\u653e\u5927\u5668\u8f93\u5165\uff1a\u8f93\u5165\u963b\u6297 10-100k\u03a9<\/li>\n<\/ul>\n<p><strong>\u8033\u673a\u4e2d\u7684\u5e94\u7528<\/strong><\/p>\n<p>\u5bf9\u4e8e\u8033\u673a\uff0c\u91cd\u8981\u7684\u662f\u786e\u4fdd\u7535\u538b\u9a71\u52a8\uff08\u4f4e\u963b\u6297\u8f93\u51fa\uff0c\u9ad8\u963b\u6297\u8f93\u5165\uff09\uff0c\u800c\u4e0d\u4f1a\u4e3a\u4e86\u83b7\u5f97\u6700\u5927\u529f\u7387\u8fdb\u884c\u963b\u6297\u5339\u914d\uff08\u529f\u7387\u5339\u914d\uff09\u3002<\/p>\n<ul class=\"unordered-list\">\n<li>\u8033\u673a\u963b\u6297\uff1a16\u03a9\u300132\u03a9\u3001250\u03a9\u3001600\u03a9\u7b49<\/li>\n<li>\u653e\u5927\u5668\u8f93\u51fa\u963b\u6297\uff1a\u901a\u5e38\u4e3a\u8033\u673a\u963b\u6297\u76841\/8\u4ee5\u4e0b<\/li>\n<\/ul>\n<p>\u4f8b\u5982\uff0c\u5bf9\u4e8e32\u03a9\u8033\u673a\uff0c\u9002\u5408\u4f7f\u7528\u8f93\u51fa\u963b\u6297\u57284\u03a9\u4ee5\u4e0b\u7684\u653e\u5927\u5668\u3002\u8fd9\u6837\u963b\u5c3c\u7cfb\u6570\uff08\u8d1f\u8f7d\u963b\u6297\/\u8f93\u51fa\u963b\u6297\uff09\u53ef\u8fbe\u52308\u4ee5\u4e0a\uff0c\u4ece\u800c\u83b7\u5f97\u826f\u597d\u7684\u63a7\u5236\u7279\u6027\u3002<\/p>\n<p><strong>\u5e73\u8861\u8fde\u63a5<\/strong><\/p>\n<p>\u5728\u4e13\u4e1a\u97f3\u9891\u9886\u57df\uff0c\u4e3a\u4e86\u6d88\u9664\u566a\u58f0\uff0c\u901a\u5e38\u4f7f\u7528\u5e73\u8861\u8fde\u63a5\uff08XLR\u3001TRS\uff09\u3002\u8fc7\u53bb600\u03a9\u662f\u6807\u51c6\u963b\u6297\uff0c\u4f46\u73b0\u5728\u7684\u4e13\u4e1a\u8bbe\u5907\u666e\u904d\u91c7\u7528\u201c\u4f4e\u963b\u6297\u8f93\u51fa\uff0c\u9ad8\u963b\u6297\u8f93\u5165\u201d\uff08\u4f8b\u598250\u03a9\u8f93\u51fa\/10k\u03a9\u8f93\u5165\uff09\u7684\u65b9\u5f0f\u3002600\u03a9\u7aef\u63a5\u4ec5\u7528\u4e8e\u7279\u6b8a\u7528\u9014\uff0c\u5373\u4f7f\u5728\u957f\u8ddd\u79bb\u7535\u7f06\u4e2d\u4e5f\u80fd\u4fdd\u6301\u4fe1\u53f7\u8d28\u91cf\u3002<\/p>\n<h2 id=\"toc11\">\u963b\u6297\u5339\u914d\u7684\u57fa\u672c\u65b9\u6cd5<\/h2>\n<p>\u5b9e\u73b0\u963b\u6297\u5339\u914d\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u6bcf\u79cd\u65b9\u6cd5\u5404\u6709\u5176\u4f18\u7f3a\u70b9\u3002\u4ece\u7b80\u5355\u7684\u7535\u963b\u7aef\u63a5\uff0c\u5230LC\u7535\u8def\u548c\u53d8\u538b\u5668\uff0c\u53ef\u4ee5\u6839\u636e\u5e94\u7528\u573a\u666f\u548c\u8981\u6c42\u89c4\u683c\u9009\u62e9\u76f8\u5e94\u7684\u65b9\u6cd5\u3002<\/p>\n<h3 id=\"toc12\">\u7535\u963b\u7aef\u63a5<\/h3>\n<p>\u7535\u963b\u7aef\u63a5\u662f\u4e00\u79cd\u57fa\u672c\u7684\u5339\u914d\u65b9\u6cd5\u3002\u572850\u03a9\u7cfb\u7edf\u4e2d\u53ea\u9700\u5728\u8d1f\u8f7d\u7aef\u8fde\u63a550\u03a9\u7535\u963b\u3001\u572875\u03a9\u7cfb\u7edf\u4e2d\u5219\u53ea\u9700\u8fde\u63a575\u03a9\u7535\u963b\uff0c\u5c31\u80fd\u51cf\u5c11\u53cd\u5c04\u3002\u8fd9\u79cd\u65b9\u6cd5\u867d\u7136\u7b80\u5355\u53ef\u9760\uff0c\u4f46\u4fe1\u53f7\u529f\u7387\u7684\u4e00\u534a\u4f1a\u88ab\u7aef\u63a5\u7535\u963b\u6d88\u8017\uff0c\u56e0\u6b64\u529f\u7387\u6548\u7387\u4e0d\u4f73\u3002<\/p>\n<p><strong>\u7aef\u63a5\u7535\u963b\u7684\u8bbe\u8ba1\u7406\u8bba<\/strong><\/p>\n<p>\u7406\u60f3\u7684\u7aef\u63a5\u662f\u8ba9\u8d1f\u8f7d\u963b\u6297\\(Z_L\\)\u7b49\u4e8e\u4f20\u8f93\u7ebf\u7684\u7279\u6027\u963b\u6297\\(Z_0\\)\u3002<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(Z_L=Z_0\\)<\/span><\/p>\n<p>\u5728\u6b64\u6761\u4ef6\u4e0b\uff0c\u53cd\u5c04\u7cfb\u6570|\\(\u0393\\)|=0\uff0c\u5b9e\u73b0\u5b8c\u5168\u5339\u914d\u3002<\/p>\n<p><strong>\u529f\u7387\u6548\u7387\u7684\u5206\u6790<\/strong><\/p>\n<p>\u5728\\(R_S\\)=\\(Z_0\\)\u3001\\(R_L\\)=\\(Z_0\\)\u7684\u5b8c\u5168\u5339\u914d\u72b6\u6001\u4e0b\uff0c\u4fe1\u53f7\u6e90\u4f9b\u7ed9\u529f\u7387\u768450%\u5728\u8d1f\u8f7d\uff08\u7aef\u63a5\u7535\u963b\uff09\u4e2d\u6d88\u8017\uff0c\u5269\u4f5950%\u5728\u4fe1\u53f7\u6e90\u5185\u963b\u4e0a\u88ab\u635f\u8017\uff08\u5982\u679c\u8d1f\u8f7d\u662f\u7535\u963b\u6027\u7684\uff0c\u5219\u4ee5\u70ed\u91cf\u5f62\u5f0f\u6d88\u8017\u6389\uff09\u3002<\/p>\n<p><strong>\u5b9e\u7528\u7684\u7aef\u63a5\u65b9\u5f0f<\/strong><\/p>\n<ol class=\"ordered-list\">\n<li>\u4e32\u8054\u7aef\u63a5\uff1a\u5728\u4fe1\u53f7\u6e90\u7aef\u4e32\u8054\u63d2\u5165\\(R_{series}\\)\u2248\\(Z_0\\)\u2212\\(Z_{out}\\)\u7684\u7535\u963b\uff0c\u4ee5\u6291\u5236\u521d\u59cb\u53cd\u5c04\u7684\u65b9\u5f0f\u3002\u5728DDR4\u4e2d\uff0c\u901a\u5e38\u91c7\u7528\u7684\u505a\u6cd5\u662f\u5728\u63a5\u6536\u7aef\u5207\u6362ODT\uff08\u4f8b\u598260\/120\/240\u03a9\uff09\u6765\u6291\u5236\u53cd\u5c04\uff0c\u800c\u5728\u53d1\u5c04\u7aef\u5bf9\u9a71\u52a8\u5668\u7684\u8f93\u51fa\u963b\u6297\\(Z_{out}\\)\u8fdb\u884c\u6821\u51c6\uff08\u4f8b\u5982\u224834\u03a9\uff09\u3002<\/li>\n<li>\u5e76\u8054\u7aef\u63a5\uff1a\u5728\u63a5\u6536\u7aef\u8fde\u63a5\\(Z_0\\)\u7684\u7535\u963b\u3002\u5728\u5dee\u5206\u4f20\u8f93\uff08\u4f8b\u5982LVDS\uff09\u4e2d\uff0c\u4e3a\u4e86\u5b9e\u73b0\u4e0e100\u03a9\u5dee\u5206\u963b\u6297\u7684\u5339\u914d\uff0c\u57fa\u672c\u505a\u6cd5\u662f\u5728\u63a5\u6536\u7aef\u5bf9\u6b63\u8d1f\u7ebf\u5bf9\u4e4b\u95f4\u5e76\u8054\u4e00\u4e2a100\u03a9\u7684\u7aef\u63a5\u7535\u963b\u3002<\/li>\n<li>\u5dee\u5206\u7aef\u63a5\uff1a\u5728\u5dee\u5206\u4fe1\u53f7\u4e2d\uff0c\u6bcf\u6761\u4fe1\u53f7\u7ebf\u4e0a\u8fde\u63a5\\(Z_0\\)\/2\u7684\u7535\u963b\uff0c\u5e76\u5c06\u4e2d\u70b9\u8fde\u63a5\u5230\u57fa\u51c6\u7535\u4f4d\u3002<\/li>\n<\/ol>\n<p><strong>\u7535\u963b\u503c\u7684\u5bb9\u5dee<\/strong><\/p>\n<p>\u7aef\u63a5\u7535\u963b\u7684\u7cbe\u5ea6\u4f1a\u76f4\u63a5\u5f71\u54cdVSWR\u3002\u5bf9\u4e8e\u7aef\u63a5\u7535\u963b\uff08\\(R_t\\)\uff09\uff0c\u6709<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(\u0393=\\displaystyle\\frac{R_t-Z_0}{R_t+Z_0},\\ VSWR=\\displaystyle\\frac{1+|\u0393|}{1-|\u0393|}\\)<\/span><\/p>\n<p>\u5f53\u5b58\u5728\u00b1\u03b5\u7684\u5bb9\u5dee\u65f6\uff0c\u4f1a\u5bfc\u81f4\u4e0a\u4e0b\u7565\u5fae\u4e0d\u5bf9\u79f0\uff08\\(R_t\\)\u504f\u5c0f\u7684\u4e00\u4fa7\u66f4\u5bb9\u6613\u51fa\u73b0\u8f83\u5dee\u7684\u6570\u503c\uff09\u3002\u8f83\u5dee\u4e00\u4fa7\u7684\u4f30\u7b97\u503c\u4e3a\uff1a<\/p>\n<p><!-- \u6570\u5f0f --><\/p>\n<p><span class=\"mathjax-text\">\\(VSWR_{worst}\u2248\\displaystyle\\frac{1}{1-\u03b5}\\)<\/span><\/p>\n<p>\u56e0\u6b64\uff0c\u00b11\/\u00b15\/\u00b110\u5927\u81f4\u5206\u522b\u5bf9\u5e94VSWR\u2272 1.01\/1.05\/1.10\u7684\u53c2\u8003\u503c\u3002\u5728\u9ad8\u9891\u5e94\u7528\u4e2d\uff0c \u63a8\u8350\u4f7f\u75281%\u7cbe\u5ea6\u7684\u7535\u963b\u3002\u6b64\u5916\uff0c\u8003\u8651\u5230\u9891\u7387\u7279\u6027\uff0c\u9009\u62e9\u5bc4\u751f\u7535\u611f\u8f83\u5c0f\u7684\u8d34\u7247\u7535\u963b\u975e\u5e38\u91cd\u8981\u3002<\/p>\n<h3 id=\"toc13\">LC\u5339\u914d\u7535\u8def<\/h3>\n<p>\u7531\u7535\u611f\u548c\u7535\u5bb9\u7ec4\u5408\u800c\u6210\u7684LC\u5339\u914d\u7535\u8def\uff0c\u53ef\u4ee5\u6291\u5236\u529f\u7387\u635f\u8017\uff0c\u5b9e\u73b0\u963b\u6297\u53d8\u6362\u3002\u8fd9\u662fRF\u7535\u8def\u548c\u5929\u7ebf\u5339\u914d\u4e2d\u7684\u4e3b\u6d41\u65b9\u6cd5\u3002\u4f46\u7531\u4e8e\u5176\u9891\u7387\u4f9d\u8d56\u6027\u8f83\u5f3a\uff0c\u5728\u5bbd\u5e26\u5e94\u7528\u4e2d\u5b58\u5728\u4e00\u5b9a\u9650\u5236\u3002<\/p>\n<p><strong>\u57fa\u672c\u7684\u5339\u914d\u7535\u8def\u5f62\u5f0f<\/strong><\/p>\n<ol class=\"ordered-list\">\n<li>1.\tL\u578b\u5339\u914d\u7535\u8def\uff1a\u6700\u7b80\u5355\u7684\u5f62\u5f0f\uff0c\u7531\u4e00\u4e2a\u7535\u611f\u548c\u4e00\u4e2a\u7535\u5bb9\u7ec4\u6210\u3002\u5728\u57fa\u672c\u8bbe\u8ba1\u516c\u5f0f\uff08\u5f53\\(R_2\\)&gt;\\(R_1\\)\u65f6\uff1a\u4f4e\u2192\u9ad8\u8f6c\u6362\uff09\u4e2d\uff0c\u8bbe\u9891\u7387\u4e3a\\(f_0\\)\uff0c\u4f4e\u7535\u963b\u4fa7\u4e3a\\(R_1\\)\uff0c\u9ad8\u7535\u963b\u4fa7\u4e3a\\(R_2\\)\uff0c\u5219\u53ef\u4f9d\u6b21\u6c42\u51fa\\(Q\\)=\u221a((\\(R_2\\)\/\\(R_1\\))-1)\u3001\u4e32\u8054\u7535\u6297\\(X_S\\)\uff1d\\(QR_1\\)\u3001\u5e76\u8054\u7535\u6297\\(X_p\\)\uff1d\\(R_2\\)\/\\(Q\\)\uff0c\\(L\\)=\\(X_S\\)\/(2\\(\u03c0f_0\\))\u3001C\uff1d1\/(2\\(\u03c0f_0\\)\\(X_p\\))\u3002\u53cd\u4e4b\uff0c\u5f53\\(R_1\\)&gt;\\(R_2\\)\u65f6\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u8bbe\u8ba1\u516c\u5f0f\uff0c\u5c06\u9ad8\u963b\u6297\u4fa7\u89c6\u4e3a\\(R_1\\)\uff0c\u4f4e\u963b\u6297\u4fa7\u89c6\u4e3a\\(R_2\\)\uff0c\u5e76\u901a\u8fc7\u8c03\u6362\\(L\\)\u548c\\(C\\)\u7684\u63d2\u5165\u4f4d\u7f6e\u6765\u8fdb\u884c\u8bbe\u8ba1\u3002<\/li>\n<li> \u03c0\u578b\u5339\u914d\u7535\u8def\uff1a\u91c7\u7528C-L-C\u7684\u7ed3\u6784\uff0c\u53ef\u5e94\u5bf9\u66f4\u5bbd\u8303\u56f4\u7684\u963b\u6297\u53d8\u6362\u6bd4\u3002\u8fd9\u79cd\u7535\u8def\u53ef\u4ee5\u901a\u8fc7\u8bbe\u5b9a\u4e2d\u95f4\u7684\\(Q\\)\u56e0\u5b50\\(Q_m\\)\u6765\u8fdb\u884c\u8bbe\u8ba1\u3002<\/li>\n<\/ol>\n<p><strong>\u4f7f\u7528\u53f2\u5bc6\u65af\u5706\u56fe\u7684\u8bbe\u8ba1<\/strong><\/p>\n<p>\u5bf9\u4e8e\u590d\u963b\u6297\u7684\u60c5\u51b5\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u6b65\u9aa4\u5728\u53f2\u5bc6\u65af\u5706\u56fe\u4e0a\u8fdb\u884c\u8bbe\u8ba1\uff1a<\/p>\n<ol class=\"ordered-list\">\n<li>\u5c06\u8d1f\u8f7d\u963b\u6297\u5f52\u4e00\u5316\uff0c\u5e76\u7ed8\u5236\u5728\u53f2\u5bc6\u65af\u5706\u56fe\u4e0a<\/li>\n<li>\u6cbf\u7b49\u7535\u963b\u5706\u6216\u7b49\u7535\u5bfc\u5706\u79fb\u52a8<\/li>\n<li>\u7535\u611f\u6cbf\u9006\u65f6\u9488\u65b9\u5411\u79fb\u52a8\uff0c\u7535\u5bb9\u6cbf\u987a\u65f6\u9488\u65b9\u5411\u79fb\u52a8<br \/>\n\u203b\u57fa\u672c\u539f\u5219\u662f\u4e32\u8054\u5668\u4ef6\u5728\u963b\u6297\uff08Z\uff09\u5706\u56fe\u4e0a\u64cd\u4f5c\uff0c\u5e76\u8054\u5668\u4ef6\u9700\u8f6c\u6362\u4e3a\u5bfc\u7eb3\uff08Y\uff09\u540e\u518d\u64cd\u4f5c\u3002<\/li>\n<li>\u786e\u5b9a\\(L\\)\u3001\\(C\\)\u503c\uff0c\u4f7f\u5176\u5230\u8fbe\u4e2d\u5fc3\u70b9\uff08\\(Z_0\\)\uff09<\/li>\n<\/ol>\n<p><strong>\u9891\u7387\u7279\u6027\u548c\u5e26\u5bbd<\/strong><\/p>\n<p>\u5339\u914d\u7535\u8def\u7684\u5e26\u5bbdBW\u662f\u7531Q\u56e0\u5b50\u548c\u4e2d\u5fc3\u9891\u7387\\(f_0\\)\u7684\u5173\u7cfb\uff08BW=\\(f_0\\)\/\\(Q\\)\uff09\u51b3\u5b9a\u7684\u3002\uff08\u5728\u9ad8Q\u8fd1\u4f3c\u4e0b\uff0c\u76f8\u5bf9\u5e26\u5bbdFBW=BW\/\\(f_0\\)\u22481\/\\(Q\\)\uff09<\/p>\n<p>\u9ad8Q\u503c\u610f\u5473\u7740\u7a84\u5e26\u7279\u6027\uff0c\u56e0\u6b64\u5728\u5bbd\u5e26\u5e94\u7528\u4e2d\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528\u591a\u7ea7\u5339\u914d\u7535\u8def\u6216\u4f20\u8f93\u7ebf\u53d8\u538b\u5668\u3002<\/p>\n<h3 id=\"toc14\">\u4f7f\u7528\u53d8\u538b\u5668\u8fdb\u884c\u963b\u6297\u53d8\u6362<\/h3>\n<p>\u53d8\u538b\u5668\u5728\u5b9e\u73b0\u7535\u538b\u8f6c\u6362\u7684\u540c\u65f6\uff0c\u4e5f\u80fd\u5b9e\u73b0\u963b\u6297\u53d8\u6362\u3002\u8bbe\u531d\u6570\u6bd4\u4e3a\\(n\\)\uff0c\u5219\u963b\u6297\u53d8\u6362\u6bd4\u4e3a\\(n_2\\)\u3002\u53d8\u538b\u5668\u5728\u97f3\u9891\u7535\u8def\u548c\u7535\u6e90\u7535\u8def\u4e2d\u53d1\u6325\u7740\u91cd\u8981\u4f5c\u7528\uff0c\u4f46\u5f80\u5f80\u9762\u4e34\u4f53\u79ef\u548c\u6210\u672c\u7684\u95ee\u9898\u3002<\/p>\n<h2 id=\"toc15\">\u963b\u6297\u5339\u914d\u603b\u7ed3<\/h2>\n<p>\u963b\u6297\u5339\u914d\u662f\u7535\u5b50\u7535\u8def\u8bbe\u8ba1\u7684\u57fa\u7840\u6280\u672f\u3002\u8be5\u6280\u672f\u80fd\u5b9e\u73b0\u529f\u7387\u4f20\u8f93\u548c\u4fe1\u53f7\u4f20\u8f93\u8d28\u91cf\u7684\u63d0\u5347\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u4eceRF\u7535\u8def\u5230\u6570\u5b57\u7535\u8def\u4ee5\u53ca\u97f3\u9891\u8bbe\u5907\u7b49\u5404\u4e2a\u9886\u57df\u3002\u901a\u8fc7\u4e86\u89e3\u5176\u57fa\u672c\u539f\u7406\uff0c\u5e76\u6839\u636e\u5e94\u7528\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u5347\u7535\u8def\u8bbe\u8ba1\u7684\u6c34\u5e73\u3002<\/p>\n<p><strong>\u76f8\u5173\u6587\u7ae0<\/strong><br \/>\n<a href=\"https:\/\/techclass.wfjydl.com\/knowledge\/circuit-design\/circuit-design-basic\/21859-2\/\">\u4ec0\u4e48\u662f\u963b\u6297\uff1f\u4ea4\u6d41\u7535\u8def\u5206\u6790\u4e0e\u8bbe\u8ba1\u57fa\u7840<\/a><\/p>\n<section class=\"c-section-download\">\n<h2 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