{"id":2644,"date":"2019-06-17T00:59:17","date_gmt":"2019-06-17T00:59:17","guid":{"rendered":""},"modified":"2019-06-17T08:59:48","modified_gmt":"2019-06-17T00:59:48","slug":"%e7%94%b5%e6%ba%90%e5%99%aa%e5%a3%b0%e6%b5%8b%e8%af%95%e6%9c%89%e4%bb%80%e4%b9%88%e6%8c%91%e6%88%98","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=2644","title":{"rendered":"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218"},"content":{"rendered":"

\n\t\u73b0\u4eca\u7684\u7535\u8def<\/u>\u548c\u7cfb\u7edf\u5de5\u4f5c\u4e8e1.2 V\u751a\u81f3\u66f4\u4f4e\u7684\u7535\u6e90\u8f68\uff0c\u5373\u4f7f\u504f\u79bb\u6807\u79f0\u503c\u7684\u5fae\u5c0f\u53d8\u5316\u4e5f\u4f1a\u4ea7\u751f\u8bef\u7801\u3002\u6296\u52a8\u3001\u9519\u8bef\u5f00\u5173<\/u>\u53ca\u4e0e\u77ac\u6001\u76f8\u5173\u7684\u95ee\u9898\u90fd\u53ef\u80fd\u4f1a\u7ed9\u4f60\u5e26\u6765\u96be\u9898\u3002<\/span><\/p>\n

\n\t\u914d\u7535\u7f51\u7edc\uff08PDN\uff09\u4e0a\u7684\u566a\u58f0\u6d4b\u91cf<\/u>\u5df2\u6210\u4e3a\u7cfb\u7edf\u8bbe\u8ba1\u8c03\u8bd5\u548c\u6545\u969c\u6392\u9664\u7684\u7126\u70b9\u3002\u4f46\u662f\uff0c\u786e\u5b9aPDN\u5b8c\u6574\u6027\u7684\u8fc7\u7a0b\u5e76\u975e\u6ca1\u6709“\u9677\u9631”\u3002\u672c\u6587\u5c06\u4ecb\u7ecdPDN\u6d4b\u91cf\u548c\u63a2\u6d4b\u6240\u9762\u4e34\u7684\u4e00\u4e9b\u6311\u6218\uff0c\u4ee5\u53ca\u53ef\u80fd\u5bfc\u81f4\u9519\u8bef\u7ed3\u679c\u7684\u539f\u56e0\uff0c\u5e76\u8ba8\u8bba\u5982\u4f55\u514b\u670d\u5b83\u4eec\u3002<\/p>\n

\n\t <\/div>\n

\n\t\u5f53\u5fc3\u5c04\u9891<\/u>\u62fe\u53d6<\/p>\n

\n\t\u6765\u81eaEMI<\/u> \/ RF<\/u>I\u7684\u566a\u58f0\u662f\u6700\u5927\u7684\u6311\u6218\u96be\u9898\uff0c\u5373\u4f7f\u662f1.5 V\u7535\u6c60<\/u>\u7684\u7535\u538b\u6d4b\u91cf\u4e5f\u4f1a\u663e\u800c\u6613\u89c1\u3002\u5728\u7535\u6c60\u7684\u5185\u90e8\u7535\u5316\u5b66\u53cd\u5e94\u548c\u7531\u4e8e\u63a2\u6d4b\u5f15\u8d77\u7684\u4e00\u70b9\u7535\u6d41<\/u>\u6d88\u8017\u4e4b\u95f4\uff0c\u6211\u4eec\u53ef\u4ee5\u9884\u6599\u5230\u7535\u538b\u8ff9\u7ebf\u4e0a\u4f1a\u6709\u4e00\u4e9b\u5c0f\u91cf\u7684\u566a\u58f0\u3002<\/p>\n

\n\t\u5c1d\u8bd5\u5c06\u7535\u6c60\u653e\u5165\u652f\u67b6\u5e76\u63a2\u6d4b\u5176\u7aef\u5b50<\/u>\uff0c\u60a8\u4f1a\u5bf9\u793a\u6ce2\u5668<\/u>\u5c4f\u5e55\u4e0a\u51fa\u73b0\u7684\u566a\u97f3\u91cf\u611f\u5230\u60ca\u8bb6\u3002\u56fe1\u4e2d\u7684\u9876\u90e8\u8ff9\u7ebf\u662f\u7535\u6c60\u7684\u7535\u538b\u8ff9\u7ebf\uff08\u54c1\u7ea2\u8272\uff0cch2\uff09\u3002\u4f5c\u4e3a\u53c2\u8003\uff0c\u5e95\u90e8\u8ff9\u7ebf\uff08\u9ec4\u8272\uff0cch1\uff09\u663e\u793a\u793a\u6ce2\u5668\u7684\u566a\u58f0\u57fa\u5e95\u6d4b\u91cf\u503c\u3002\u4e24\u6761\u8ff9\u7ebf\u90fd\u4f7f\u7528\u76f8\u540c\u7684\u5782\u76f4\u523b\u5ea6\u3002\u7535\u6c60\u7684\u8ff9\u7ebf\u663e\u793a\u51fa\u5176\u7535\u538b\u7684\u9ad8\u566a\u58f0\u8fdc\u8fdc\u8d85\u51fa\u9884\u671f\u3002\u5e73\u5747\u7535\u538b\u4e3a1.56 V\uff0c\u566a\u58f0\u4e3a33 mVPK-PK\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t\u56fe1\uff1a 1.5 V\u7535\u6c60\u7684\u521d\u59cb\u6d4b\u91cf\u7ed3\u679c\u663e\u793a\u566a\u58f0\uff08\u4e0a\u90e8\u8ff9\u7ebf\uff09\u548c\u793a\u6ce2\u5668\u7684\u57fa\u5e95\u566a\u58f0\uff08\u4e0b\u90e8\u8ff9\u7ebf\uff09\u3002 \u663e\u7136\uff0c\u5916\u90e8\u566a\u58f0\u5df2\u8fdb\u5165\u6d4b\u91cf\u7cfb\u7edf\u3002<\/p>\n

\n\t\u6709\u7528\u7684\u4e00\u81f4\u6027\u68c0\u67e5\u662f\u5728\u9891\u57df\u4e2d\u67e5\u770b\u6b64\u4fe1\u53f7\uff08\u56fe2\uff09\u3002 \u4ece\u5168\u9891\u8c31\u56fe\uff08\u4e0a\u90e8\u8ff9\u7ebf\uff09\uff0c\u6211\u4eec\u770b\u5230\u566a\u58f0\u786e\u5b9e\u662f\u5bbd\u5e26\uff0c\u8fbe\u5230\u4e86\u793a\u6ce2\u5668\u7684\u5168\u5e26\u5bbd\uff08\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u4e3a1 GHz\uff09\uff0c\u800c\u4e14\u6ca1\u6709\u8870\u51cf\u8ff9\u8c61\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n

\t\u56fe2\uff1a\u7535\u6c60\u7535\u538b\u6d4b\u91cf\u7684\u9891\u8c31\u5206\u6790\u89c6\u56fe\u663e\u793a\u51fa\u5176\u771f\u6b63\u7684\u5bbd\u5e26\uff08\u4e0a\u90e8\u8ff9\u7ebf\uff09\uff0c\u5728\u4e0b\u90e8\u8ff9\u7ebf\u4e2d\u663e\u793a\u7684\u524d100 MHz\u4e2d\u7684\u7279\u5b9a\u9891\u7387\u5904\u8fbe\u5230\u5cf0\u503c\u3002<\/p>\n

\n\t\u56fe2\u4e2d\u7684\u4e0b\u90e8\u8ff9\u7ebf\u663e\u793a\u4e86\u566a\u58f0\u9891\u8c31\u7684\u524d100 MHz\u7684\u653e\u5927\u89c6\u56fe\u3002 \u5b83\u63ed\u793a\u51fa\u660e\u663e\u7684\u566a\u58f0\u5cf0\u503c\uff0c\u5947\u602a\u7684\u662f\uff0c\u5b83\u6b63\u597d\u4ece15 MHz\u5f00\u59cb\uff0c\u63a5\u7740\u662f30 MHz\u300145 MHz\uff0c\u4f9d\u6b64\u7c7b\u63a8\u3002\u8fd9\u65e0\u7591\u662f\u6765\u81ea\u5916\u90e8\u6e90\u7684RF\u566a\u58f0\u3002<\/p>\n

\n\t\u56e0\u6b64\uff0c\u660e\u663e\u7684\u8865\u6551\u63aa\u65bd\u662f\u6b63\u786e\u5730\u5c4f\u853d\u7535\u6c60\uff08\u56fe3\uff09\uff0c\u786e\u4fdd\u5c4f\u853d\u7f69\u8fde\u63a5\u5230\u63a2\u5934\u7684\u8fd4\u56de\u7ebf\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe3\uff1a\u63a2\u5934\u5468\u56f4\u7684\u5c4f\u853d\uff0c\u5373\u4f7f\u662f\u7c97\u7cd9\u7684\u5c4f\u853d\u4e5f\u53ef\u4ee5\u964d\u4f4eRF\u62fe\u53d6\u566a\u58f0\u3002<\/p>\n

\n\t\u589e\u52a0\u5c4f\u853d\u7684\u5dee\u522b\u5728\u56fe4\u7684\u4e0b\u90e8\u8ff9\u7ebf\u5f88\u660e\u663e\u3002\u5c4f\u853d\u53ef\u5c06\u566a\u58f0\u4ece\u5927\u7ea6-60 dBm\u8303\u56f4\u51cf\u5c0f\u5230-100 dBm\u8303\u56f4\uff0c\u51cf\u5c11\u4e864\u500d\uff0c\u5e45\u5ea6\u7ea6\u4e3a45 nV\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe4\uff1a\u901a\u8fc7\u63a2\u5934\u5468\u56f4\u7684\u5c4f\u853d\uff0c\u4e0e\u56fe3\u76f8\u6bd4\uff0c\u793a\u6ce2\u5668\u663e\u793a\u51fa\u964d\u4f4e\u7684\u566a\u58f0\u3002<\/p>\n

\n\t\u4f5c\u4e3a\u6700\u7ec8\u7684\u5b8c\u6574\u6027\u68c0\u67e5\uff0c\u8ba9\u6211\u4eec\u5c06\u6709\u9002\u5f53\u5c4f\u853d\u7684\u7535\u6c60\u566a\u58f0\u4e0e\u793a\u6ce2\u5668\u7684\u566a\u58f0\u57fa\u5e95\u6d4b\u91cf\u503c\u8fdb\u884c\u6bd4\u8f83\uff08\u56fe5\uff09\u3002 \u793a\u6ce2\u5668\u57fa\u5e95\u566a\u58f0\u5728Ch1\uff08\u9ec4\u8272\uff0c\u4e0b\u90e8\u8ff9\u7ebf\uff09\uff0c\u800c\u7535\u6c60\u566a\u58f0\u5728Ch2\u4e0a\uff08\u54c1\u7ea2\u8272\uff0c\u4e0a\u90e8\u8ff9\u7ebf\uff09\uff0c\u5b83\u4eec\u51e0\u4e4e\u662f\u76f8\u540c\u7684\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe5\uff1a\u5f53\u7535\u6c60\u6709EMI \/ RFI\u5c4f\u853d\u65f6\uff0c\u793a\u6ce2\u5668\u7684\u57fa\u5e95\u566a\u58f0\u6d4b\u91cf\uff08\u9ec4\u8272\uff09\u548c\u5c4f\u853d\u7684\u7535\u6c60\u6d4b\u91cf\uff08\u54c1\u7ea2\u8272\uff09\u51e0\u4e4e\u5b8c\u5168\u76f8\u540c\u3002<\/p>\n

\n\t\u56e0\u6b64\uff0c\u9664\u975e\u7528\u5c4f\u853d\u826f\u597d\u7684\u540c\u8f74\u8fde\u63a5\u7ebf\uff0c\u5176\u5b83\u4efb\u4f55\u4e1c\u897f\u63a2\u6d4b\u4f4e\u7535\u5e73\u4fe1\u53f7\u90fd\u4f1a\u53d7\u5230\u5e72\u6270\u3002\u4efb\u4f55\u4e0eDUT\u5c4f\u853d\u5206\u5f00\u7684\u88f8\u9732\u5bfc\u4f53\u90fd\u4f1a\u50cf\u5929\u7ebf\u4e00\u6837\u3002<\/p>\n

\n\tEMI-RFI\u62fe\u53d6\u901a\u5e38\u5177\u6709\u5bbd\u5e26\u7279\u6027\u3002\u4e3a\u4e86\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11\u8fd9\u65b9\u9762\u7684\u5f71\u54cd\uff0c\u60a8\u7684\u63a2\u5934\u5c16\u7aef\u5e94\u5c3d\u53ef\u80fd\u5730\u8bbe\u8ba1\u4e3a\u540c\u8f74\u7535\u7f06<\/u>\u3002\u8fd9\u4e00\u5c16\u7aef\u7684\u4efb\u4f55\u7535\u611f<\/u>\u90fd\u4f1a\u964d\u4f4e\u6d4b\u91cf\u5e26\u5bbd\uff0c\u5e76\u53ef\u80fd\u5bfc\u81f4\u6d4b\u91cf\u4e2d\u51fa\u73b0\u632f\u94c3\u3002\u66f4\u7cdf\u7cd5\u7684\u662f\uff0c\u60a8\u5c06\u83b7\u5f97“\u5929\u7ebf\u6548\u5e94”\uff0c\u800c\u4e14\u63a2\u5934\u5bb9\u6613\u53d7\u5230EMI \/ RFI\u62fe\u53d6\u5f71\u54cd\u3002\u6240\u4ee5\uff0c\u8981\u786e\u4fdd\u793a\u6ce2\u5668\u548cDUT\u4e4b\u95f4\u7684\u8fde\u63a5\u770b\u8d77\u6765\u5c3d\u53ef\u80fd\u50cf\u540c\u8f74\u8fde\u63a5\u3002<\/p>\n

\n\t\u5728\u6d4b\u8bd5<\/u>\u6027\u8bbe\u8ba1\u65b9\u9762\uff0c\u5982\u679c\u60a8\u53ef\u4ee5\u5fae\u578b\u540c\u8f74\u8fde\u63a5\u5668<\/u>\u7684\u5f62\u5f0f\u5728\u6d4b\u8bd5\u677f\u4e0a\u6dfb\u52a0\u6d4b\u8bd5\u70b9<\/u>\uff0c\u7136\u540e\u5c06\u540c\u8f74\u7535\u7f06\u8fde\u63a5\u5230\u8fd9\u4e9b\u70b9\uff0c\u90a3\u4e48\u60a8\u5c06\u5927\u5927\u51cf\u5c11\u7535\u8f68\u6d4b\u91cf\u7684EMI \/ RFI\u6f5c\u5728\u5f71\u54cd\u3002<\/p>\n

\n\t\u4e86\u89e310X\u63a2\u5934<\/p>\n

\n\t\u6b63\u5982\u6211\u4eec\u4e0a\u9762\u6240\u663e\u793a\u7684\u90a3\u6837\uff0cEMI \/ RFI\u53ef\u80fd\u5bf9\u7535\u6e90\u8f68\u6d4b\u91cf\u9020\u6210\u4e25\u91cd\u7834\u574f\u3002 \u56e0\u6b64\uff0c\u60a8\u5e94\u59cb\u7ec8\u5173\u6ce8\u793a\u6ce2\u5668\u63a2\u5934\u7684\u67d0\u4e9b\u7279\u6027\uff0c\u537310X\u8870\u51cf\u63a2\u5934\uff0c\u901a\u5e38\u5728\u65b0\u793a\u6ce2\u5668\u7684\u76d2\u5b50\u4e2d\u53ef\u4ee5\u627e\u5230\u3002\u4f7f\u752810X\u8870\u51cf\u63a2\u5934\uff0c\u800c\u4e0d\u662f\u5e26\u5fae\u5939\u94b3\u5c16\u7aef\u7684BNC\u63a2\u5934\u65f6\uff0c\u6211\u4eec\u4f1a\u5f97\u5230\u4ec0\u4e48\u6837\u7684\u7ed3\u679c\uff1f<\/p>\n

\n\t\u56fe6\u663e\u793a\u4e86\u4e24\u6761\u8ff9\u7ebf\u4e2d\u53ef\u6bd4\u8f83\u7684\u566a\u58f0\u62fe\u53d6\u91cf\u3002 \u5728\u5c16\u5934\u5f00\u8def<\/u>\u7684\u60c5\u51b5\u4e0b\uff0c\u63a2\u9488\u5bf9\u7535\u573a\u66f4\u654f\u611f\u3002 10X\u63a2\u9488\u6d4b\u91cf\u503c\u4e3a72 mVPK-PK\u548c11 mV RMS\uff0c\u800c\u540c\u8f74\u63a2\u9488\u6d4b\u91cf\u503c\u4e3a36 mVPK-PK\u548c4.2 mV RMS\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe6\uff1a\u4f7f\u752810X\u8870\u51cf\u63a2\u5934\uff08\u9876\u90e8\uff09\u6355\u83b7\u7684\u4fe1\u53f7\u6ce2\u5f62\u548c\u5c16\u5934\u5f00\u8def\u7684BNC\u63a2\u9488\uff08\u5e95\u90e8\uff09\u663e\u793a\u51fa\u4e0d\u540c\u7684\u566a\u58f0\u6c34\u5e73\u3002<\/p>\n

\n\t\u56fe7\u663e\u793a\u4e86\u4e0e\u56fe6\u76f8\u540c\u7684\u6d4b\u91cf\u7ed3\u679c\uff0c\u4f46\u662f\u5c16\u5934\u77ed\u63a5\u5728\u4e00\u8d77\u3002 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u63a2\u5934\u5bf9\u78c1\u573a\u66f4\u654f\u611f\u3002 \u7136\u800c\uff0c\u4e24\u6761\u8ff9\u7ebf\u7684\u566a\u58f0\u5206\u91cf\u518d\u6b21\u5177\u6709\u53ef\u6bd4\u6027\u3002 \u8fd9\u6b21\uff0c10X\u63a2\u5934\u6d4b\u5f9733 mVPK-PK\u548c1.6 mV RMS\uff0c\u800c\u540c\u8f74\u7535\u7f06\u63a2\u5934\u6d4b\u91cf\u503c\u4e3a24 mVPK-PK\u548c1.2 mV RMS\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe7\uff1a\u4e0e\u56fe6\u76f8\u540c\u7684\u4fe1\u53f7\u548c\u63a2\u9488\uff0c\u4f46\u63a2\u9488\u5c16\u5934\u77ed\u63a5\u5728\u4e00\u8d77\uff0c\u663e\u793a\u78c1\u573a\u566a\u58f0\u8f83\u4f4e\u3002<\/p>\n

\n\t\u6211\u4eec\u77e5\u9053\u8fd9\u4e9b\u6d4b\u91cf\u4e2d\u7684\u566a\u58f0\u662fEMI \/ RFI\u3002 \u89e3\u51b3RF\u62fe\u53d6\u95ee\u9898\u7684\u7b54\u6848\u662f\u4eceDUT\u5230\u793a\u6ce2\u5668\u673a\u7bb1\u7684\u9002\u5f53\u5c4f\u853d\u3002<\/p>\n

\n\t\u56fe8\u663e\u793a\u4e86\u5e94\u7528\u9002\u5f53\u5c4f\u853d\u5e76\u5728\u63a2\u9488\u5c16\u5934\u77ed\u63a5\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u6d4b\u91cf\u7684\u7ed3\u679c\u3002 \u6b63\u5982\u6240\u671f\u671b\u7684\u90a3\u6837\uff0c\u8ddf\u5728EMI \/ RFI\u5b9e\u9a8c\u4e2d\u4e00\u6837\uff0cBNC\u63a2\u5934\u7684\u4fe1\u53f7\u51e0\u4e4e\u6ca1\u6709\u566a\u58f0\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe8\uff1a\u76f8\u540c\u7684\u4fe1\u53f7\u548c\u63a2\u9488\uff0c\u5176\u5c16\u7aef\u77ed\u8def<\/u>\u5982\u56fe7\u6240\u793a\uff0c\u4f46\u5e94\u7528\u9002\u5f53\u7684\u5c4f\u853d\u663e\u793a\u51faEMI \/ RFI\u964d\u4f4e\u3002<\/p>\n

\n\t10X\u63a2\u5934\u53d1\u751f\u4e86\u4ec0\u4e48\uff1f\u8bf7\u8bb0\u4f4f\uff0c\u8fd9\u4e9b\u8ff9\u7ebf\u4ee5\u76f8\u540c\u768410 mV\/div\u523b\u5ea6\u663e\u793a\uff08\u53c2\u89c1\u63d0\u793a\uff09\u3002\u4f4610X\u63a2\u5934\u663e\u793a\u51fa10\u500d\u7684BNC\u63a2\u5934\u566a\u58f0\u3002\u539f\u56e0\u662f\u4e24\u4e2a\u63a2\u5934\u5728\u793a\u6ce2\u5668\u7684\u653e\u5927\u5668<\/u>\u4e2d\u90fd\u770b\u5230\u76f8\u540c\u7684\u566a\u58f0\uff0c\u4f46\u5b83\u572810X\u63a2\u5934\u5c16\u7aef\u53cd\u5c04\u4e8610\u500d\u3002<\/p>\n

\n\t\u8fd9\u4e9b\u4f8b\u5b50\u8868\u660e\uff0c\u5f53\u4f7f\u7528\u4efb\u4f55\u7c7b\u578b\u768410X\u8870\u51cf\u63a2\u5934\u5728\u793a\u6ce2\u5668\u7684\u672c\u5e95\u566a\u58f0\u5904\u6216\u9644\u8fd1\u91c7\u96c6\u4f4e\u7535\u5e73\u4fe1\u53f7\u65f6\uff0c\u60a8\u5b9e\u9645\u4e0a\u5df2\u7ecf\u653e\u5f03\u4e8610\u500d\u7684\u4fe1\u53f7\uff0c\u4f46\u4ecd\u5177\u6709\u76f8\u540c\u7684\u566a\u58f0\u91cf\u3002\u60a8\u53ef\u4ee5\u770b\u5230\u4fe1\u566a\u6bd4\uff08SNR\uff09\u4f1a\u964d\u4f4e20 dB\u3002<\/p>\n

\n\t\u5e26\u5bbd\u4e0e\u7535\u6d41\u8d1f\u8f7d<\/p>\n

\n\t\u6d4b\u91cf\u7535\u6e90\u8f68\u4e0a\u7684\u566a\u58f0\u65f6\u8fd8\u6709\u53e6\u4e00\u4e2a\u68d8\u624b\u7684\u95ee\u9898\uff1a\u5982\u4f55\u5728\u6d4b\u91cf\u4e2d\u5b9e\u73b0\u9ad8\u5e26\u5bbd\uff0c\u540c\u65f6\u6700\u5927\u9650\u5ea6\u5730\u964d\u4f4eDUT\u4e0a\u7684\u7535\u6d41\u8d1f\u8f7d\uff1f\u9274\u4e8eDUT\u662f\u7535\u6e90\u8f68\uff0c\u60a8\u4e0d\u5e0c\u671b\u4ece\u4e2d\u5438\u53d6\u592a\u591a\u7535\u6d41\u3002\u4f46\u662f\u8fd9\u4e24\u4e2a\u6d4b\u91cf\u6807\u51c6\u76f8\u4e92\u77db\u76fe\u3002\u8fd9\u662f\u4e00\u4e2a\u7a98\u6001\uff0c\u5b83\u4e0e\u4e92\u8fde\u4fe1\u53f7\u7684\u57fa\u672c\u7279\u6027\u6709\u5173\u3002<\/p>\n

\n\t\u5047\u8bbe\u60a8\u7684\u63a2\u5934\u4e0a\u6709\u4e00\u6839\u540c\u8f74\u7535\u7f06\u3002\u793a\u6ce2\u5668\u7684\u8f93\u5165\u963b\u6297\u4e3a1MΩ\uff0c\u60a8\u6b63\u5728\u63a2\u6d4b\u4f4e\u963b\u6297\u7684\u7535\u6e90\u8f68\u3002\u5982\u679c\u6709\u4fe1\u53f7\u4ece\u8be5\u8f68\u77ac\u95f4\u53d1\u5c04\u5230\u63a2\u5934\uff0c\u5b83\u4f1a\u9047\u52301MΩ\u8f93\u5165\u963b\u6297\u5e76\u53cd\u5c04\u56de\u6765\uff0c\u4ece\u800c\u5f15\u53d1\u632f\u94c3\u5468\u671f\uff08\u56fe9\uff09\u3002<\/p>\n

\n\t\"\u7535\u6e90\u566a\u58f0\u6d4b\u8bd5\u6709\u4ec0\u4e48\u6311\u6218\"<\/p>\n

\n\t
\n\t\u56fe9\uff1a\u7528\u4e00\u68396\u82f1\u5bf8\u957f\u7684\u540c\u8f74\u7535\u7f06\u8fde\u63a5\u4f4e\u963b\u6297\u7535\u6e90\u8f68\u548c1MΩ\u8f93\u5165\u963b\u6297\uff0c\u4f1a\u5728\u4fe1\u53f7\u91c7\u96c6\u65f6\u4ea7\u751f\u53cd\u5c04\u548c\u632f\u94c3\u4f2a\u5f71\u3002<\/p>\n

\n\t\u60a8\u5c06\u770b\u5230\u591a\u5927\u7684\u632f\u94c3\u53d6\u51b3\u4e8e\u76f8\u5bf9\u4e8e\u793a\u6ce2\u5668\u5e26\u5bbd\u7684\u540c\u8f74\u7535\u7f06\u957f\u5ea6\u3002\u5982\u679c\u60a8\u60f3\u5c06\u632f\u94c3\u9891\u7387\u63a8\u9ad8\u5230\u8d85\u8fc71 GHz\u793a\u6ce2\u5668\u7684\u5e26\u5bbd\u9650\u5236\uff0c\u90a3\u4e48\u540c\u8f74\u7535\u7f06\u8981\u77ed\u4e8e3\u82f1\u5bf8\uff0c\u8fd9\u662f\u76f8\u5f53\u4e0d\u5207\u5b9e\u9645\u7684\u3002\u5982\u679c\u4f60\u6b63\u5728\u4f7f\u7528\u4eea\u5668\u7684\u5168\u5e26\u5bbd\uff0c\u8d85\u8fc73\u82f1\u5bf8\u957f\u5ea6\u53ef\u80fd\u4f1a\u770b\u5230\u663e\u793a\u5668<\/u>\u4e0a\u51fa\u73b0\u632f\u94c3\u4f2a\u5f71\u3002<\/p>\n

\n\t\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4f60\u9700\u8981\u66f4\u957f\u7684\u540c\u8f74\u7535\u7f06\u3002\u53ea\u8981\u793a\u6ce2\u5668\u76841MΩ\u8f93\u5165\u963b\u6297\u4e0e\u7535\u6e90\u8f68DUT\u7684\u963b\u6297\u4e4b\u95f4\u5b58\u5728\u4e0d\u5339\u914d\uff0c\u5c31\u4f1a\u4ea7\u751f\u53cd\u5c04\u548c\u632f\u94c3\u3002\u56e0\u6b64\uff0c\u8981\u60f3\u4e0d\u4ea7\u751f\u632f\u94c3\u4f2a\u5f71\uff0c\u53ef\u83b7\u5f97\u7684\u6700\u9ad8\u5e26\u5bbd\u53ef\u80fd\u4f4e\u4e8e\u60a8\u7684\u9884\u671f\u3002<\/p>\n

\n\t\u60a8\u53ef\u4ee5\u901a\u8fc7\u5728\u793a\u6ce2\u5668\u4e0a\u4f7f\u752850Ω\u8f93\u5165\u7ec8\u7aef\u6765\u907f\u514d\u632f\u94c3\u95ee\u9898\u3002\u8fd9\u79cd\u7ec8\u7aef\u53ef\u7528\u4e8e\u6700\u5c0f\u5316\u7535\u7f06\u53cd\u5c04\u3002<\/p>\n

\n\t\u4f46\u8fd9\u53c8\u6709\u4e00\u4e2a\u7a98\u5883\uff1a\u5982\u679c\u5728\u793a\u6ce2\u5668\u4e0a\u4f7f\u752850Ω\u8f93\u5165\u7aef\u63a5\uff0c\u5728\u7535\u6e90\u8f68\u4e0a\u5c31\u4f1a\u5305\u542b50Ω\u8d1f\u8f7d\u3002\u5982\u679c\u6d4b\u91cf5 V\u7535\u538b\u8f68\uff0c\u8fd9\u662f\u793a\u6ce2\u5668\u4e2d\u768450Ω\u7535\u963b<\/u>\u53ef\u4ee5\u627f\u53d7\u7684\u6700\u9ad8\u7535\u538b\uff0c\u5b83\u5c06\u6d88\u8017100 mA\u7535\u6d41\u3002\u5982\u679c\u60a8\u7684\u8f68\u4f9b\u7535100 A\uff0c\u8fd9\u4e0d\u662f\u95ee\u9898\u3002\u4f46\u5982\u679c\u5b83\u662fLDO<\/u>\uff0c\u6700\u5927\u7535\u6d41\u53ea\u6709200 mA\uff0c\u793a\u6ce2\u5668\u5c06\u5403\u6389\u4f60\u4e00\u534a\u7684\u88d5\u91cf\u3002<\/p>\n

\n\t\u53e6\u4e00\u79cd\u9009\u62e9\u662f\u4f7f\u752810X\u8870\u51cf\u63a2\u5934\u3002\u5b83\u6709\u4e00\u4e2a1MΩ\u7684\u793a\u6ce2\u5668\u8f93\u5165\uff0c\u56e0\u6b64\u5b83\u4e0d\u4f1a\u52a0\u8f7d\u7535\u6e90\u8f68\u3002\u5982\u4e0a\u6240\u8ff0\uff0c10X\u63a2\u5934\u5c06\u5931\u53bb20 dB\u7684SNR\u3002\u4e00\u4e9b\u5de5\u7a0b\u5e08\u5728\u63a2\u5934\u5c16\u7aef\u4f7f\u7528450Ω\u4e32\u8054\u7535\u963b\u6765\u5236\u4f5c“\u72ec\u521b”\u768410X\u63a2\u5934\u3002\u8d1f\u8f7d\u662f500Ω\uff0c\u800c\u540c\u8f74\u7535\u7f06\u4ecd\u7136\u662f50Ω\u7ec8\u7aef\uff0c\u6240\u4ee5\u4ed6\u4eec\u90fd\u5f88\u9ad8\u5174\u3002\u4f46\u540c\u6837\uff0c\u6211\u4eec\u5f15\u5165\u4e8610\u500d\u8870\u51cf\uff0c\u5e76\u5728\u963b\u6297\u5339\u914d\u4e0a\u727a\u7272\u4e86SNR\u3002<\/p>\n

\n\t\u4f7f\u7528\u540c\u8f74\u63a2\u9488\u53ef\u4ee5\u6d4b\u91cf\u9ad8\u5e26\u5bbd\uff0c\u4f46\u4e3a\u6b64\u9700\u898150Ω\u7684\u8d1f\u8f7d\u3002\u53cd\u8fc7\u6765\uff0c\u8fd9\u4f1a\u589e\u52a0\u7535\u6e90\u8f68\u8d1f\u8f7d\uff0c\u57fa\u672c\u4e0a\u963b\u6b62\u4e86\u6211\u4eec\u63a2\u6d4b\u627f\u8f7d\u8d85\u8fc75 V\u7684\u7535\u6e90\u8f68\u3002\u901a\u5e38\uff0c\u6d4b\u8bd5\u548c\u6d4b\u91cf\u6d89\u53ca\u5230\u6298\u4e2d\u3002\u5728\u67d0\u79cd\u7a0b\u5ea6\u4e0a\uff0c\u6bcf\u79cd\u6d4b\u91cf\u65b9\u6848\u90fd\u5c06\u51b3\u5b9a\u5982\u4f55\u5e73\u8861\u8fd9\u4e9b\u59a5\u534f\u4ee5\u83b7\u5f97\u6700\u6709\u610f\u4e49\u7684\u7ed3\u679c\u3002<\/p>\n

\n\t\u514b\u670d\u6bcf\u4e2a\u6311\u6218\u7684\u65b9\u6cd5\u662f\u4f7f\u7528\u6709\u6e90\u63a2\u5934\u3002\u7535\u538b\u8f68\u63a2\u5934\u5728\u4f4e\u9891\u65f6\u5177\u6709\u9ad8\u963b\u6297\uff0c\u56e0\u6b64\u5b83\u4eec\u4e0d\u4f1a\u5c06\u5bfc\u8f68\u5411\u4e0b\u52a0\u8f7d\uff0c\u4f46\u4f1a\u572850Ω\u793a\u6ce2\u5668\u8f93\u5165\u7ec8\u7aef\u7535\u963b\u4e2d\u5f15\u5165\u4e00\u4e2a\u5e26\u6709\u9694\u76f4\u7535\u5bb9<\/u>\u7684\u5e76\u8054\u9ad8\u901a<\/u>\u6ee4\u6ce2\u5668<\/u>\u3002\u6b64\u5916\uff0c\u7535\u538b\u8f68\u63a2\u5934\u901a\u5e38\u53ef\u4ee5\u627f\u53d7\u9ad8\u8fbe30 V\u7684\u7535\u538b\uff0c\u5e76\u4e14\u80fd\u591f\u4ea7\u751f\u5927\u7684\u504f\u79fb\u3002<\/p>\n

\n\t\u6709\u6e90\u8f68\u63a2\u5934\u662f\u6ee1\u8db3\u63a2\u6d4b\u7535\u6e90\u8f68\u72ec\u7279\u6311\u6218\u7684\u6700\u4f73\u6298\u8877\u65b9\u6848\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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