{"id":9243,"date":"2022-06-13T15:11:48","date_gmt":"2022-06-13T07:11:48","guid":{"rendered":"http:\/\/www.szryc.com\/?p=9243"},"modified":"2022-06-13T15:11:48","modified_gmt":"2022-06-13T07:11:48","slug":"%e9%a2%91%e8%b0%b1%e4%bb%aa%e4%b8%ad%e4%b8%8d%e5%90%8c%e9%a2%91%e7%8e%87%e8%8c%83%e5%9b%b4%e7%9a%84rf%e5%89%8d%e7%ab%af%e7%9a%84%e8%ae%be%e8%ae%a1","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=9243","title":{"rendered":"\u9891\u8c31\u4eea\u4e2d\u4e0d\u540c\u9891\u7387\u8303\u56f4\u7684RF\u524d\u7aef\u7684\u8bbe\u8ba1"},"content":{"rendered":"

\u5728\u9891\u8c31\u4eea\u57fa\u7840\uff08\u4e8c\uff09\u8bb2\u8ff0\u4e86\u9ad8\u4f4e\u4e2d\u9891\u7684\u9009\u62e9\uff0c\u5bf9\u4e8e9kHz\u52307GHz\u4fe1\u53f7\u524d\u7aef\u5904\u7406\uff0c\u6211\u4eec\u9700\u8981\u5206\u6bb5\u8fdb\u884c\u5904\u7406\uff0c9kHz\u52303GHz\u4fe1\u53f7\u91c7\u7528\u9ad8\u4e2d\u9891\u7684\u65b9\u5f0f\uff0c3GHz\u52307GHz\u91c7\u7528\u4f4e\u4e2d\u9891\u7684\u65b9\u5f0f\u76f4\u63a5\u5c06\u4fe1\u53f7\u9891\u8c31\u642c\u79fb\u5230\u4f4e\u4e2d\u9891\u3002<\/p>\n

1.9kHz\u52303GHz\u4fe1\u53f7\u524d\u7aef\u5904\u7406<\/p>\n

\u5728\u56fe1\u6240\u793a\u4e2d\uff0c\u7b2c\u4e00\u4e2aIF<\/u>\u8bbe\u7f6e\u4e3a3476.4MHz\u3002\u5c06\u8f93\u5165\u9891\u7387\u8303\u56f4\u4ece9kHz\u52303GHz\u7684\u8f93\u5165\u4fe1\u53f7\u901a\u8fc7\u4e0a\u53d8\u9891\u8f6c\u6362\u5230\u9891\u7387\u4e3a3476.4MHz\uff0c\u6240\u4ee5LO\u4fe1\u53f7\u2464\u5fc5\u987b\u57283476.40MHz~6476.4MHz\u7684\u9891\u7387\u8303\u56f4\u5185\u8fdb\u884c\u626b\u9891\u6216\u8005\u8c03\u9891\u3002\u6839\u636e\u516c\u5f0f\uff0c\u955c\u50cf\u9891\u7387\u8303\u56f4\u4e3a6952.809MHz~9952.8MHz\u3002<\/p>\n

\"pYYBAGKmta6ATNmlAAJ32dWX_pI977\"<\/div>\n

\u56fe1 \u7b2c\u4e00\u7ea7\u6df7\u9891\u7535\u8def<\/p>\n

\u5bf9\u4e8e9kHz~3GHz\u7684\u7b2c\u4e00\u7ea7\u6df7\u9891\uff0cLO\u4fe1\u53f7\u2464\u9891\u7387\u8303\u56f43476.40MHz~6476.4MHz\u53ef\u53d8\uff0c\u540c\u65f6\u6839\u636e\u5085\u91cc\u53f6\u53d8\u6362\u53ef\u77e5\uff0c\u4e24\u4e2a\u4fe1\u53f7\u65f6\u57df\u76f8\u4e58\uff0c\u9891\u57df\u662f\u76f8\u5377\u79ef\uff0c\u5373LO\u4fe1\u53f7\u4e0a\u4efb\u4f55\u7684\u5e72\u6270\u90fd\u4f1a\u6beb\u65e0\u4fdd\u7559\u7684\u51fa\u73b0\u5728\u8f93\u51fa\u9891\u8c31\u4e0a\uff0c\u6240\u4ee5LO\u4fe1\u53f7\u4e0d\u4ec5\u4ec5\u9700\u8981\u8d85\u5bbd\u7684\u9891\u7387\u8303\u56f4\uff0c\u4e5f\u9700\u8981\u76f8\u5bf9\u4f4e\u7684\u76f8\u4f4d\u566a\u58f0\u4ee5\u53ca\u8c10\u6ce2\u3002<\/p>\n

\u4e3a\u6ee1\u8db3\u8fd9\u4e9b\u6307\u6807\uff0c\u5b9e\u73b0LO\u7684\u65b9\u5f0f\u6709\u4e09\u79cd\uff1aYIG\u00a0\u632f\u8361\u5668<\/u>\u3001VCO\uff08\u538b\u63a7\u632f\u8361\u5668\uff09\u3001PLL+VCO\u3002<\/p>\n

1.YIG \u632f\u8361\u5668\uff1a\u901a\u5e38\u88ab\u7528\u4f5cLO\uff0c\u5176\u5229\u7528\u78c1\u573a\u6765\u6539\u53d8\u632f\u8361\u5668\u7684\u9891\u7387\uff1b<\/p>\n

2.VCO\uff08\u538b\u63a7\u632f\u8361\u5668\uff09\uff1aVCO\u7684\u7279\u70b9\u662f\u6709\u4e00\u4e2a\u66f4\u5c0f\u7684\u53ef\u53d8\u8303\u56f4\u4e0eYIG\u632f\u8361\u5668\u76f8\u6bd4\uff0cVCO\u53ef\u4ee5\u6bd4YIG\u632f\u8361\u5668\u8c03\u8c10\u5feb\u5f97\u591a\u3002<\/p>\n

3.PLL+VCO\uff1aPLL\u5229\u7528\u5916\u90e8\u8f93\u5165\u7684\u53c2\u8003\u4fe1\u53f7\u63a7\u5236\u73af\u8def\u5185\u90e8\u632f\u8361\u4fe1\u53f7\u7684\u9891\u7387\u548c\u76f8\u4f4d\uff0c\u4e0eVCO\u914d\u5408\u8f93\u51fa\u66f4\u5bbdLO\u9891\u7387\u3002<\/p>\n

\u5728\u9891\u8c31\u4eea\u4e2d\uff0c\u6700\u4e3a\u5e38\u7528\u5c31\u662fPLL+VCO\u6784\u67b6\u4ea7\u751fLO\u4fe1\u53f7\u3002\u4e3a\u4e86\u63d0\u9ad8\u9891\u8c31\u7684\u9891\u7387\u7cbe\u5ea6\uff0c\u672c\u632fLO\u91c7\u7528PLL\u6280\u672f\uff0c\u901a\u8fc7\u4e00\u4e2a\u9501\u76f8\u73af<\/u>\uff08PLL\uff09\u5c06\u8f93\u5165\u4fe1\u53f7\u9501\u5b9a\u5230\u4e00\u4e2a\u53c2\u8003\u4fe1\u53f7\u4e0a\uff08\u7cfb\u7edf\u7684\u53c2\u8003\u65f6\u949f<\/u>\uff09\u3002\u4f46\u662f\u91c7\u7528PLL\u7684\u65b9\u5f0f\uff0c\u8f93\u51fa\u4fe1\u53f7\u5e76\u4e0d\u662f\u8fde\u7eed\u53ef\u8c03\uff0c\u800c\u662f\u6b65\u8fdb\u8c03\u8282\u8bbe\u7f6e\uff0c\u540c\u65f6\u6b65\u8fdb\u8c03\u8282\u8bbe\u7f6e\u4f9d\u8d56\u4e8e\u9891\u8c31\u4eea\u8bbe\u7f6e\u7684\u5206\u8fa8\u7387\u5e26\u5bbd\uff08RBW\uff09\uff0c\u56e0\u6b64\u8f83\u5c0f\u5206\u8fa8\u7387\u5e26\u5bbd\uff08RBW\uff09\u9700\u8981PLL\u8f83\u5c0f\u7684\u8c03\u8c10\u6b65\u8fdb\u3002\u5426\u5219\uff0c\u8f93\u51fa\u4fe1\u53f7\u4e0d\u80fd\u8986\u76d6\u6574\u4e2a\u626b\u9891\u8303\u56f4\uff0c\u800c\u4e14\u4f1a\u9020\u6210\u529f\u7387\u8bef\u5dee\u3002\u5982\u56fe2\u6240\u793a\uff0c\u5de6\u56fe\u8868\u793a\uff0cPLL\u7684\u6b65\u8fdb\u8c03\u8282\u8fdc\u5927\u4e8e\u5206\u8fa8\u7387\u5e26\u5bbd\uff0c\u8fd9\u5bfc\u81f4\u5728\u626b\u9891\u65f6\uff0c\u6b65\u8fdb\u8df3\u8f6c\u8fc7\u5927\u5bfc\u81f4\u8f93\u5165\u4fe1\u53f7\u6df7\u9891\u540e\u6ca1\u6709\u8fdb\u5165\u5230\u4e2d\u9891\u6ee4\u6ce2\u5668<\/u>\u7684\u5e26\u5185\uff0c\u9020\u6210\u4fe1\u53f7\u7684\u4e22\u5931\u3002\u53f3\u56fe\u8868\u793a\uff0cPLL\u7684\u6b65\u8fdb\u8c03\u8282\u5927\u4e8e\u5206\u8fa8\u7387\u5e26\u5bbd\uff0c\u8fd9\u5bfc\u81f4\u5728\u626b\u9891\u65f6\uff0c\u6b65\u8fdb\u8df3\u8f6c\u4e0d\u5408\u7406\u5bfc\u81f4\u8f93\u5165\u4fe1\u53f7\u6df7\u9891\u540e\u6ca1\u6709\u8fdb\u5165\u5230\u4e2d\u9891\u6ee4\u6ce2\u5668\u7684\u901a\u5e26\u5185\uff0c\u9020\u6210\u4fe1\u53f7\u7684\u529f\u7387\u8bef\u5dee\uff0c\u4e3a\u4e86\u907f\u514d\u4ee5\u4e0a\u4e24\u79cd\u9519\u8bef\uff0c\u5176PLL\u7684\u8bbe\u7f6e\u7684\u6b65\u957f\u8fdc\u4f4e\u4e8e\u5206\u8fa8\u7387\uff08RBW\uff09\uff0c\u5728\u5b9e\u9645\u8bbe\u8ba1\uff0cPLL\u7684\u8c03\u8282\u6b65\u8fdb\u5e94\u8be5\u5c0f\u4e8e0.1\u00b7RBW\uff081\/10\uff09\uff0c\u6bd4\u5982\u9891\u8c31\u4eea\u8bbe\u7f6e\u7684RBW\u4e3a10kHz\uff0c\u90a3\u4e48LO\u8f93\u51fa\u7684\u9891\u7387\u6b65\u8fdb\u5e94\u8be5\u662f\u5c0f\u4e8e1KHz\u7684\uff0c\u4f46\u662f\u5728\u8bbe\u8ba1LO\u65f6\uff0c\u53ef\u4ee5\u8003\u8651LO\u7535\u8def<\/u>\u7684\u6b65\u8fdb\u6839\u636eRBW\u8bbe\u7f6e\u8fdb\u884c\u5206\u6bb5\u8c03\u8282\u3002<\/p>\n

\"pYYBAGKmtcqAIhYkAAITP7aqO7M594\"<\/div>\n

\u56fe2 PLL\u6b65\u8fdb\u548c\u5206\u8fa8\u7387\u5e26\u5bbd<\/p>\n

\u5bf9\u4e8eLO\u7684\u53c2\u8003\u4fe1\u53f7\uff0c\u901a\u5e38\u7531\u4e00\u4e2a\u6e29\u5ea6\u63a7\u5236\u7684\u6676\u4f53<\/u>\u632f\u8361\u5668\uff08TCXO\uff09\u4ea7\u751f\u3002\u4e3a\u4e86\u63d0\u9ad8\u9891\u7387\u7cbe\u5ea6\u548c\u957f\u671f\u6027\u7a33\u5b9a\u6027\uff0c\uff08OCXO\uff09 \u632f\u8361\u5668\u53ef\u4f5c\u4e3a\u5927\u591a\u6570\u9891\u8c31\u4eea\u7684\u53c2\u8003\u65f6\u949f\u3002\u540c\u65f6\u4e3a\u4e86\u4fdd\u6301\u4e0e\u5176\u4ed6\u6d4b\u91cf<\/u>\u4eea\u5668\u540c\u6b65\u4ee5\u53ca\u677f\u5185\u6e90\u540c\u6b65\uff0c\u53c2\u8003\u4fe1\u53f7\uff08\u901a\u5e38\u91c7\u752810MHz\uff09\u53ef\u7531\u8f93\u5165\u8fde\u63a5\u5668<\/u>\uff08BNC\u63a5\u53e3<\/u>\uff09\u8f93\u5165\u6216\u662f\u91c7\u7528\u677f\u5185\u7684\u53c2\u8003\u65f6\u949f\u3002\u9700\u8981\u4e0e\u5176\u4ed6\u6d4b\u91cf\u4eea\u5668\u540c\u6b65\u6d4b\u8bd5<\/u>\u65f6\uff0c\u91c7\u7528\u5916\u90e8\u53c2\u8003\u65f6\u949f\u548c\u5916\u90e8\u89e6\u53d1\u6d4b\u91cf\u5373\u53ef\u3002<\/p>\n

\u7ecf\u8fc7\u4e86\u7b2c\u4e00\u7ea7\u6df7\u9891\u4e4b\u540e\uff0cIF1\u4e2d\u9891\u8f93\u51fa\u4e3a3476.4MHz\uff0c\u5bf9\u4e8e\u8fd9\u4e2a\u4fe1\u53f7\u76f4\u63a5\u91c7\u96c6\uff0c\u6240\u8981\u4ed8\u51fa\u7684\u4ee3\u4ef7\u592a\u5927\uff0c\u6240\u4ee5\u6211\u4eec\u9700\u8981\u5c06IF1\u4e2d\u9891\u4fe1\u53f7\u518d\u901a\u8fc7\u4e0b\u53d8\u9891\u81f3\u4f4e\u9891IF2\u8fdb\u884c\u91c7\u96c6\uff0c\u598210.7MHz\u300120.4MHz\u3002\u8fd9\u6837\u7684\u5c31\u51cf\u5c11\u4e86\u5bf9ADC<\/u>\u7684\u91c7\u6837\u7387\u7684\u8981\u6c42\u3002\u5982\u56fe3\u6240\u793a\uff0c\u8bd5\u60f3\u4e00\u4e0b\uff0c\u5982\u679c\u76f4\u63a5\u5c06IF1\u4e2d\u98913476.4MHz\u4e0b\u53d8\u9891\u81f320.4MHz\uff0c\u662f\u5426\u53ef\u4ee5\u3002\u7406\u8bba\u4e0a\u662f\u53ef\u4ee5\u5b9e\u73b0\u7684\uff0c\u6b64\u65f6LO\u9891\u7387\u91c7\u75283456MHz\uff0c\u90a3\u4e48IF2=20.4MHz\uff0c\u955c\u50cf\u9891\u7387\u4e3a3435.6MHz\uff0c\u8fd9\u91cc\u5c31\u4f1a\u51fa\u73b0\u4e00\u4e2a\u95ee\u9898\uff0cIF1\u548c\u955c\u50cf\u4fe1\u53f7\u9891\u7387\u4e4b\u5dee\u53ea\u67092*20.4=40.8MHz\uff0c\u4e3a\u4e86\u6291\u5236\u955c\u50cf\u7684\u5e72\u6270\uff0c\u6240\u9700\u8981\u7684BPF\uff08\u5e26\u901a\u6ee4\u6ce2\u5668\uff09\u7684\u5e26\u5bbd\u5c31\u975e\u5e38\u7a84\u3001\u4e2d\u5fc3<\/u>\u9891\u7387\u9ad8\uff0c\u540c\u65f6\u5e26\u5916\u5bf9\u955c\u50cf\u6291\u5236\u53c8\u8981\u975e\u5e38\u7684\u5f3a\uff0c\u5b9e\u9645\u8bbe\u8ba1\u5b9e\u73b0\u662f\u6bd4\u8f83\u590d\u6742\u7684\u3002\u540c\u65f6\u7531\u4e8e\u7b2c\u4e00\u7ea7Mi<\/u>xer\u7684\u5404\u4e2a\u7aef\u53e3\u7684\u9694\u79bb\u5ea6\u662f\u6709\u9650\u7684\uff0c\u90a3\u4e48RF<\/u>\u548cLO\u662f\u4f1a\u6cc4\u9732\u5230IF1\u4e2d\u7684\uff0c\u6240\u4ee5\u76f4\u63a5\u4e0b\u53d8\u9891\u81f320.4MHz\uff0c\u5bf9\u4e2d\u9891\u6ee4\u6ce2\u5668\u2467\u8bbe\u8ba1\u63d0\u51fa\u4e86\u6311\u6218\u3002<\/p>\n

\"pYYBAGKmteiAR3_iAACisgzmnAY284\"<\/div>\n

\u56fe3 \u4e8c\u7ea7\u4e0b\u53d8\u9891\u81f3\u7b2c\u4e2d\u9891IF2<\/p>\n

\u7531\u4e8eIF1=3476.4MHz\u4fe1\u53f7\u9891\u7387\u9ad8\uff0c\u5982\u679cIF2=20.4MHz\uff0c\u9700\u8981\u4e00\u4e2a\u6781\u590d\u6742\u7684\u6ee4\u6ce2\u5668\u6765\u5b8c\u6210\u5bf9\u955c\u50cf\u4fe1\u53f7\u7684\u6291\u5236\uff0c\u4e2d\u9891\u6ee4\u6ce2\u5668\u2467\u9700\u8981\u975e\u5e38\u9661\u5ced\u7684\u5e26\u5916\u6291\u5236\u3002\u5982\u56fe4\u6240\u793a\uff0c\u56e0\u6b64\uff0c\u5c06IF1\u4e0b\u53d8\u9891\u5230IF2\u65f6\uff0cIF2\u53ef\u4ee5\u91c7\u7528\u76f8\u5bf9\u9ad8\u7684\u9891\u7387\uff0c\u5982404.4MHz\u3002\u82e5\u4e2d\u9891IF2=404.4MHz\uff0c\u4e00\u4e2a\u56fa\u5b9a\u7684LO\u4fe1\u53f7\uff08\u4e8c\u7ea7\u672c\u632f\uff09 \u4e3a3072MHz\uff0c\u955c\u50cf\u9891\u7387\u4e3a2667.6MHz\u3002\u90a3\u4e48\uff0c\u955c\u50cf\u6291\u5236\u7684\u4e2d\u9891\u6ee4\u6ce2\u5668\u2467\u5c31\u5f88\u5bb9\u6613\u5b9e\u73b0\u4e86\u3002\u540c\u65f6\u5e26\u901a\u6ee4\u6ce2\u5668\u7684\u5e26\u5bbd\u8db3\u591f\u5927\uff0cIF1\u4fe1\u53f7\u4e0d\u4f1a\u53d7\u635f \uff08\u5373\u4f7f\u662f\u5bf9\u4e8e\u6700\u5927\u5206\u8fa8\u7387\u7684\u5e26\u5bbd\uff09\u3002\u540c\u65f6\u51cf\u5c11\u603b\u566a\u58f0\uff0c\u5728\u4e8c\u6b21\u53d8\u9891\u65f6\uff0c\u5bf9\u8f93\u5165\u4fe1\u53f7\u88ab\u653e\u5927\u2466\uff0c\u653e\u5927\u5668<\/u>\u7684\u589e\u76ca\u53ef\u4ee5\u6839\u636e\u7b2c\u4e8c\u7ea7Mixer\u7684-1dB\u538b\u7f29\u70b9\u5408\u7406\u8bbe\u7f6e\u3002<\/p>\n

\"poYBAGKmtf-AeLaJAAGyG5-nssg083\"<\/div>\n

\u56fe4 9KHz~3GHz\u94fe\u8def<\/p>\n

2.3GHz\u52307GHz\u4fe1\u53f7\u524d\u7aef\u5904\u7406\u7ecf\u8fc7\u4f4e\u9891\u6bb5\u94fe\u8def\u7684\u5206\u6790\uff0c\u5bf9\u4e8e\u9ad8\u9891\u6bb5\u5206\u6790\u4e5f\u5177\u5907\u4e86\u4e00\u5b9a\u7684\u57fa\u7840\uff0c3GHz~7GHz\u9891\u7387\u6bb5\uff0c\u53ef\u4ee5\u76f4\u63a5\u5c06\u8f93\u5165\u4fe1\u53f7\u76f4\u63a5\u8f6c\u6362\u4e3a\u56fa\u5b9a\u4f4eIF\uff0c\u4f7f\u7528\u5e26\u901a\u6ee4\u6ce2\u5668\u6291\u5236\u955c\u50cf\u5e72\u6270\uff0c\u6b64\u65f6\u53ea\u8981\u672c\u5730\u632f\u8361\u5668\u9891\u7387\u8303\u56f4\u6ee1\u8db3\u4e0b\u53d8\u9891\u8981\u6c42\u5373\u53ef\u3002\u5982\u56fe5\u6240\u793a\uff0c3GHz\u52307GHz\u4fe1\u53f7\u524d\u7aef\u94fe\u8def\u3002<\/p>\n

\"poYBAGKmtiSAHZdsAAFWPlljkp8951\"<\/div>\n

\u56fe5 3GHz\u52307GHz\u4fe1\u53f7\u524d\u7aef\u94fe\u8def<\/p>\n

\u5728\u94fe\u8def\u4e2d\uff0c\u9891\u8c31\u5206\u6790\u4eea\u7684\u9891\u7387\u8303\u56f4\u662f\u4ece3GHz\u52307GHz\u3002\u7ecf\u8fc7\u8870\u51cf\u5668\u540e\uff0c\u8f93\u5165\u4fe1\u53f7\u4e3a\u7531\u53cc\u5de5\u5668\uff0819\uff09 \u5c06\u8f93\u5165\u4fe1\u53f7\u5206\u62109kHz\u81f33GHz\u548c3GHz\u7684\u52307GHz\uff0c\u5e76\u5e94\u7528\u4e8e\u76f8\u5e94\u7684\u5c04\u9891<\/u>\u524d\u7aef\u3002\u5728\u9ad8\u9891\u90e8\u5206\uff0c\u4fe1\u53f7\u901a\u8fc7YIG\u6ee4\u6ce2\u5668\u4e4b\u540e\u8fdb\u5165\u5230\u4e00\u7ea7\u6df7\u9891\u5668\u5f53\u4e2d\uff0cYIG\u6ee4\u6ce2\u5668\u7684\u4e2d\u5fc3\u9891\u7387\u5bf9\u5e94\u662f\u6b64\u65f6\u8f93\u5165\u4fe1\u53f7\u7684\u9891\u7387\uff0c\u6bd4\u5982\u8f93\u51654.5G<\/u>Hz\uff0c\u90a3\u4e48\u8be5YIG\u6ee4\u6ce2\u5668\u7684\u4e2d\u5fc3\u4e3a4.5GHz\uff0c\u540c\u65f6YIG\u6ee4\u6ce2\u5668\u9664\u4e86\u4e2d\u5fc3\u9891\u7387\u53ef\u8c03\u4ee5\u5916\uff0c\u5176\u8fd8\u5177\u6709\u975e\u5e38\u7a84\u7684\u5e26\u5bbd\u3002\u524d\u6587\u4e2d\uff0c\u5047\u8bbe\u76f4\u63a5\u4e0b\u53d8\u9891\u81f3\u4f4e\u4e2d\u989120.4MHz\uff0c\u90a3\u4e48\u5bf9\u4e8e\u6df7\u9891\u5668\u8f93\u5165\u7aef\u7684\u5e26\u901a\u6ee4\u6ce2\u5668\u800c\u8a00\uff0c\u6ee4\u6ce2\u5668\u7ed3\u6784\u6bd4\u8f83\u590d\u6742\u3002\u540c\u6837\u7684\u5bf9\u4e8e\u9ad8\u9891\u6bb5\u7684\u94fe\u8def\uff0c\u76f4\u63a5\u4e0b\u53d8\u9891\u81f320.4MHz\uff0c\u4f9d\u7136\u4f1a\u9762\u4e34\u8fd9\u4e2a\u95ee\u9898\uff0cYIG\u65e0\u6cd5\u63d0\u4f9b\u5982\u6b64\u7a84\u7684\u5e26\u5bbd\u3002\u6240\u4ee5\uff0c\u9ad8\u9891\u6bb5IF\u53ef\u4ee5\u91c7\u7528\u76f8\u5bf9\u9ad8\u7684\u9891\u7387\uff0c\u5982404.4MHz\u3002\u8fd9\u6837YIG\u6ee4\u6ce2\u5668\u80fd\u591f\u6ee1\u8db3\u6291\u5236\u955c\u50cf\u7684\u529f\u80fd\u3002\u6240\u4ee5\u4e2d\u9891\u53ef\u4ee5\u91c7\u7528404.4MHz\uff0c\u6b64\u65f6LO\u7684\u9891\u7387\u8303\u56f4\u4e3a\uff1a2595.6MHz~ 6595.6 MHz\u6216\u80053404.4 MHz~7404.4 MHz\u5982\u679c\u901a\u8fc7\u8f6f\u4ef6\u6765\u5b8c\u6210\u5bf9\u4e24\u79cd\u8f6c\u6362\u4e4b\u95f4\u5207\u6362\uff0c\u5c31\u53ef\u4ee5\u5728\u53ea\u7528\u4e00\u4e2aLO\u65e2\u53ef\u4ee5\u5b8c\u6210\u9891\u7387\u7684\u8f6c\u6362\uff0c\u6b64\u65f6LO\u9891\u7387\u8303\u56f4\u4e3a\uff1a3404.4MHz ~6595.6MHz\uff0c\u53ef\u4ee59KHz~3GHz\u9891\u7387\u6bb5\u5171\u7528\u672c\u632f\u3002\u4f46\u662f\u8f93\u5165\u7684\u4fe1\u53f7\u9891\u7387\u4e3a3GHz~13.6GHz\u65f6\uff0c\u672c\u632fLO\u4fe1\u53f7\u9891\u7387\u8303\u56f4\u4e3a2595.6MHz~ 13.1954 GHz\uff08\uff0c\u5c31\u4e0d\u80fd\u4f7f\u7528\u4f4e\u9891\u6bb5\u7684\u672c\u632f\u3002\u6700\u7ec8\u8f6c\u6362\u4e3a 404.4 MHz \u4e2d\u9891\u4fe1\u53f7\u7ecf\u8fc7\u4e2d\u9891\u653e\u5927\u5668\uff0823\uff09\u5e76\u901a\u8fc7\u6a21\u62df\u5f00\u5173<\/u>\u5207\u6362\u5230\u4f4e\u9891\u8def\u5f84\u4e0a\u5b8c\u6210\u9ad8\u9891\u6bb5\u4e0b\u53d8\u9891\u3002<\/p>\n

\u901a\u8fc7\u9762\u524d\u7684\u94fe\u8def\u7684\u5206\u6790\uff0c\u5bf9\u4e8e\u8f93\u5165\u7684\u4fe1\u53f7\u9891\u7387\u4e3a3GHz~13.6GHz\u65f6\uff0cLO\u9891\u7387\u8303\u56f4\u4e3a2595.6 MHz~ 13.1954GHz\uff0c\u76f4\u63a5\u7531PLL+VCO\u8f93\u51faLO\u4fe1\u53f7\u4ee3\u4ef7\u592a\u5927\u3002\u7279\u522b\u662f\u5f53\u9891\u8c31\u4eea\u7684\u9ad8\u8fbe30GHz\u6216\u662f\u66f4\u9ad8\u768440GHz\u5e26\u5bbd\u65f6\uff0cPLL+VCO\u76f4\u63a5\u8f93\u51faLO\u4ee3\u4ef7\u592a\u5927\u3002\u4f46\u662f\u53ef\u4ee5\u5229\u7528\u500d\u9891\u5668\u548c\u5668\u4ef6\u7684\u975e\u7ebf\u6027\u6765\u83b7\u53d6\u9ad8\u9891\u7387\u7684\u672c\u632f\u4fe1\u53f7\u3002<\/p>\n

\u91c7\u7528\u500d\u9891\u5668\u7684\u65b9\u5f0f\uff0c\u5c31\u662fPLL+VCO\u8f93\u51fa\u7684\u4fe1\u53f7\u8fdb\u884c\u500d\u9891\uff0c\u6bd4\u59822\u500d\u30014\u500d\uff0c\u5373\u53ef\u5f97\u5230\u9ad8\u7684LO\u9891\u7387\u4e86\u3002\u91c7\u7528\u500d\u9891\u5668\uff0c\u53ef\u4ee5\u83b7\u5f97\u6700\u5c0f\u7684\u8f6c\u6362\u635f\u8017\uff0c\u4ece\u800c\u4fdd\u6301\u9891\u8c31\u5206\u6790\u4eea\u7684\u4f4e\u566a\u58f0\u7cfb\u6570\uff0c\u4f46\u662f\u9664\u4e86\u4e58\u6cd5\u5668\uff0822\uff09\u4e4b\u5916\uff0c\u8fd8\u9700\u8981\u6ee4\u6ce2\u5668\u6765\u6291\u5236\u4e58\u6cd5\u540e\u7684\u6b21\u8c10\u6ce2\uff0c\u540c\u65f6\u6df7\u9891\u5668\u7684LO\u8f93\u5165\u7aef\u5fc5\u987b\u63d0\u4f9b\u8db3\u591f\u9ad8\u7684 LO \u7535\u5e73\uff0c\u56e0\u6b64\u6240\u9700\u7684\u653e\u5927\u5668\u5fc5\u987b\u662f\u9ad8\u5bbd\u5e26\u7684\u3001\u4f4e\u5931\u771f\u7684\u3002<\/p>\n

\u91c7\u7528\u5668\u4ef6\u7684\u975e\u7ebf\u6027\u7279\u6027\u65f6\uff0c\u5c31\u662f\u5229\u7528\u5668\u4ef6\u7684\u975e\u7ebf\u6027\u4ea7\u751f\u6240\u9700\u8981\u7684\u8c10\u6ce2\uff0c\u6bd4\u59822\u6b21\u8c10\u6ce2\u3002\u91c7\u7528\u5668\u4ef6\u7684\u975e\u7ebf\u6027\u7279\u6027\u65f6\uff0c\u901a\u8fc7\u8c10\u6ce2\u6df7\u5408\u7684\u8f6c\u6362\u66f4\u5bb9\u6613\u5b9e\u73b0\uff0c\u4f46\u610f\u5473\u7740\u66f4\u9ad8\u7684\u8f6c\u6362\u635f\u8017\u3002\u9700\u8981\u5728\u8f83\u4f4e\u9891\u7387\u8303\u56f4\u5185\u7684 LO \u4fe1\u53f7\uff0c\u8be5\u4fe1\u53f7\u5fc5\u987b\u4ee5\u9ad8\u7535\u5e73\u65bd\u52a0\u5230\u6df7\u9891\u5668\u3002\u7531\u4e8e\u6df7\u9891\u5668\u7684\u975e\u7ebf\u6027\u548c\u9ad8 LO \u7535\u5e73\uff0c\u53ea\u8981\u8c10\u6ce2\u5177\u6709\u529f\u7387\u5c31\u53ef\u4ee5\u7528\u4e8e\u9891\u7387\u8f6c\u6362\u3002\u4ee5\u4e0a\u5c31\u662f\u5bf9\u9ad8LO\u83b7\u53d6\u7684\u65b9\u5f0f\uff0c\u6700\u5e38\u7528\u7684\u662f\u7b2c\u4e00\u79cd\u65b9\u5f0f\uff0c\u4ee3\u4ef7\u6700\u5c0f\u3002\u4f46\u662f\u8fd9\u4e24\u4e2a\u65b9\u5f0f\u5728\u5b9e\u8df5\u4e2d\u7684\u4f7f\u7528\u53d6\u51b3\u4e8e\u4ef7\u683c\u7b49\u7ea7\u9891\u8c31\u4eea\u3002\u540c\u65f6\u8fd9\u4e24\u79cd\u65b9\u6cd5\u7684\u7ec4\u5408\u662f\u53ef\u80fd\u7684\u3002\u5f53\u7136\u5728\u66f4\u9ad8\u9891\u7387\u65f6\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5916\u672c\u632f\u3002<\/p>\n

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