{"id":21412,"date":"2022-01-08T09:31:02","date_gmt":"2022-01-08T01:31:02","guid":{"rendered":"https:\/\/www.paiqinano.com\/?p=21412"},"modified":"2022-01-06T15:16:55","modified_gmt":"2022-01-06T07:16:55","slug":"%e5%a6%82%e4%bd%95%e4%b8%barf%e7%94%b5%e8%b7%af%e6%9d%bf%e6%8f%90%e4%be%9b%e7%b2%be%e5%af%86%e7%9b%b8%e4%bd%8d%e5%92%8c%e5%b9%85%e5%ba%a6%e6%95%b0%e6%8d%ae%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/www.paiqinano.com\/?p=21412","title":{"rendered":"\u5982\u4f55\u4e3aRF\u7535\u8def\u677f\u63d0\u4f9b\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\uff1f"},"content":{"rendered":"<p>\u8054\u63a5\/\u53c2\u7167\u5143\u5668\u4ef6<\/p>\n<p>\u8054\u63a5\/\u53c2\u7167\u5143\u5668\u4ef6<\/p>\n<p><u>AD<\/u>L5380<\/p>\n<p>400 MHz\u81f36\uff0c000 MHz\u6b63\u4ea4\u548c\u8c03\u5236\u89e3\u8c03\u5668<\/p>\n<p>ADA4940-2<\/p>\n<p>\u8d85\u529f\u8017\u4f4e\u3001\u4f4e\u5931\u5e27<u>ADC<\/u>\u63a7\u5236\u5668<\/p>\n<p>AD7903<\/p>\n<p>\u53cc\u901a\u9053\u5185\u5b58\u3001\u5dee\u5206\u4fe1\u53f7\u300116\u4f4d\u30011 MSPS PulSAR 12.0 MW ADC<\/p>\n<p>ADR435<\/p>\n<p>\u8d85\u4f4e\u566a\u97f3XFET 5.0 V\u6807\u51c6\u7535\u538b\u6e90\uff0c\u5177\u5907\u5438<u>\u7535\u6d41\u91cf<\/u>\u548c\u6e90\u7535\u6d41\u91cf\u5de5\u4f5c\u80fd\u529b<\/p>\n<p>\u8bc4\u5b9a\u548c\u8bbe\u8ba1\u65b9\u6848\u9002\u7528<\/p>\n<p><u>\u7535\u6e90\u7535\u8def<\/u><u>\u8bc4\u5b9a\u677f<\/u><\/p>\n<p>ADL5380\u8bc4\u5b9a\u677f\uff08ADL5380-EVALZ\uff09<\/p>\n<p>ADA4940-2\u8bc4\u5b9a\u677f\uff08ADA4940-2ACP-EBZ\uff09<\/p>\n<p>AD7903\u8bc4\u5b9a\u677f\uff08EVAL-AD7903SDZ\uff09<\/p>\n<p>\u7cfb\u7edf\u8f6f\u4ef6\u6f14\u8bd5\u670d\u52a1\u5e73\u53f0\uff08EVAL-SDP-CB1Z\uff09<\/p>\n<p>\u7535\u6e90\u7535\u8def\u4f5c\u7528\u4e0e\u4f18\u70b9<\/p>\n<p>\u56fe1\u4e2d\u7684\u7535\u6e90\u7535\u8def\u53ef\u7cbe\u51c6\u5730\u5c06400 MHz\u81f36 GHz <u>RF<\/u>\u952e\u5165\u6570\u636e\u4fe1\u53f7\u53d8\u6362\u4e3a\u5bf9\u5e94\u7684\u6570\u636e\u529b\u5ea6\u548c\u6570\u636e\u76f8\u4f4d\u5dee\u3002 \u8be5\u6570\u636e\u4fe1\u53f7\u94fe\u53ef\u5b8c\u62100\u00b0\u5230360\u00b0\u76f8\u4f4d\u5dee<u>\u7cbe\u786e\u6d4b\u91cf<\/u>\uff0c900 MHz\u65f6\u7cbe\u5bc6\u5ea6\u4e3a1\u00b0\u3002 \u8be5\u7535\u6e90\u7535\u8def\u9009\u7528\u4e00\u4e2a\u6027\u80fd\u5353\u8d8a\u6b63\u4ea4\u548c\u8c03\u5236\u89e3\u8c03\u5668\u3001\u4e00\u4e2a\u53cc\u901a\u9053\u5185\u5b58\u5dee\u5206\u4fe1\u53f7<u>\u653e\u5927\u4eea<\/u>\u53ca\u5176\u4e00\u4e2a\u53cc\u901a\u9053\u5185\u5b58\u3001\u5dee\u5206\u4fe1\u53f7\u300116\u4f4d\u30011 MSPS\u9010\u6b21\u903c\u8fd1\u578b<u>\u6570\u6a21\u8f6c\u6362\u5668<\/u>\uff08SAR ADC\uff09\u3002<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132059-61b9ebbbdad29.jpg\" alt=\"\u7535\u8def\u7b14\u8bb0\uff1aRF\u81f3\u4f4d\u89e3\u51b3\u65b9\u6848\u53ef\u63d0\u4f9b6 GHz\u4fe1\u53f7\u7684\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\" width=\"560\" height=\"257\" border=\"0\" \/><\/p>\n<p>\u56fe1. \u7528\u4ee5\u529b\u5ea6\u548c\u76f8\u4f4d\u5dee\u7cbe\u786e\u6d4b\u91cf\u7684\u7b80\u5355\u5316\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\uff08\u672a\u8868\u660e\u5168\u90e8\u8054\u63a5\u548c\u53bb\u8026\uff09<\/p>\n<p>\u7535\u6e90\u7535\u8def\u53d9\u8ff0<\/p>\n<p>\u6b63\u4ea4\u548c\u8c03\u5236\u89e3\u8c03\u5668<\/p>\n<p>\u6b63\u4ea4\u548c\u8c03\u5236\u89e3\u8c03\u5668\u7ed9\u4e88\u4e00\u4e2a\u540c\u76f8\uff08I\uff09\u6570\u636e\u4fe1\u53f7\u548c\u4e00\u4e2a\u6070\u597d\u6b63\u76f8\u53cd90\u00b0\u7684\u6b63\u4ea4\u548c\uff08Q\uff09\u6570\u636e\u4fe1\u53f7\u3002 I\u548cQ\u6570\u636e\u4fe1\u53f7\u4e3a\u77e2\u91cf\u7d20\u6750\uff0c\u56e0\u800c\uff0c\u53ef\u4ee5\u7528\u4e09\u89d2\u6052\u7b49\u5f0f\u6d4b\u7b97\u63a5\u53d7\u4fe1\u606f\u7684\u529b\u5ea6\u548c\u76f8\u4f4d\uff0c\u5982\u4e0b\u56fe2\u6240\u663e\u793a\u3002 \u672c\u632f\uff08LO\uff09\u952e\u5165\u4e3a\u521d\u59cb\u53d1\u9001\u6570\u636e\u4fe1\u53f7\uff0cRF\u952e\u5165\u4e3a\u4f20\u8f93\u6570\u636e\u4fe1\u53f7\u3002\u8c03\u5236\u89e3\u8c03\u5668\u8f6c\u5316\u6210\u4e00\u4e2a\u548c\u5dee\u9879\u3002 RF\u548cLO\u6570\u636e\u4fe1\u53f7\u7684\u5de5\u4f5c\u9891\u7387\u5b8c\u5168\u4e00\u81f4\uff0c\u03c9LO = \u03c9RF\uff0c\u56e0\u800c\uff0c\u7d50\u679c\u4f1a\u8fc7\u8651\u6389\u9ad8\u9891\u7387\u548c\u9879\uff0c\u5dee\u9879\u5219\u505c\u7559\u4e8e\u76f4\u6d41\u7535\u3002\u63a5\u53d7\u4fe1\u606f\u7684\u76f8\u4f4d\u5dee\uff08\u03c6RF\uff09\u4e0e\u63a8\u9001\u6570\u636e\u4fe1\u53f7\u7684\u76f8\u4f4d\u5dee\uff08\u03c6LO\uff09\u5404\u6709\u4e0d\u540c\uff0c\u8be5\u76f8\u4f4d\u53ef\u8868\u660e\u4e3a\u03c6LO &#8211; \u03c6RF\u3002<\/p>\n<p>\u771f\u6b63I\/Q\u8c03\u5236\u89e3\u8c03\u5668\u5177\u5907\u5f88\u591a\u7f3a\u70b9\uff0c\u5305\u542b\u6b63\u4ea4\u548c\u76f8\u4f4d\u5dee\u504f\u5dee\u3001\u6536\u83b7\u4e0d\u5e73\u8861\u3001LO-RF\u6cc4\u9732\u7b49\uff0c\u5168\u90e8\u8fd9\u79cd\u90fd\u662f\u9020\u6210\u89e3\u8c03\u6570\u636e\u4fe1\u53f7\u6027\u80fd\u964d\u4f4e\u3002\u8981\u6311\u9009\u8c03\u5236\u89e3\u8c03\u5668\uff0c\u6700\u5148\u660e\u786eRF\u952e\u5165\u5de5\u4f5c\u9891\u7387\u8303\u7574\u3001\u529b\u5ea6\u7cbe\u5bc6\u5ea6\u548c\u76f8\u4f4d\u5dee\u7cbe\u5bc6\u5ea6\u89c4\u5b9a\u3002<\/p>\n<p>ADL5380\u8c03\u5236\u89e3\u8c03\u5668\u9009\u75285 V\u5355\u5f00\u5173\u7535\u6e90\u914d\u7535\uff0c\u53ef\u63a5\u7eb3400 MHz\u81f36 GHz\u8303\u7574\u5185\u7684RF\u6216<u>IF<\/u>\u952e\u5165\u5de5\u4f5c\u9891\u7387\uff0c\u8fdb\u800c\u53d8\u6210\u4fe1\u53f7\u63a5\u6536\u5668\u6570\u636e\u4fe1\u53f7\u94fe\u7684\u4f73\u6311\u9009\u3002\u4f9d\u636e\u914d\u5907\uff0c\u53ef\u7ed9\u4e885.36 dB\u5de5\u4f5c\u7535\u538b\u53d8\u6362\u6536\u83b7\uff0cADL5380\u7684\u5dee\u5206\u4fe1\u53f7I\u548cQ\u5bfc\u51fa\u53ef\u4ee5\u628a2.5 V p-p\u97f3\u9891\u4fe1\u53f7\u63a8\u52a8\u81f3500 \u03a9\u8d1f\u8377\u3002 \u5728900 MHz\u65f6\uff0c\u5176\u566a\u58f0\u7cfb\u6570\uff08NF\uff09\u4e3a10.9 dB\uff0c\u4e00\u9636\u4ea4\u8c03\u622a\u70b9\uff08IP1\uff09\u4e3a11.6 dBm\uff0c\u800c\u4e09\u9636\u4ea4\u8c03\u622a\u70b9\uff08IP3\uff09\u4e3a29.7 dBm\uff0c\u91c7\u6837\u7387\u4f18\u5f02\uff1b\u800c0.07 dB\u7684\u827a\u672f\u5747\u8861\u548c0.2\u00b0\u7684\u76f8\u4f4d\u5dee\u5747\u8861\u5219\u53ef\u5b8c\u6210\u4f18\u79c0\u7684\u89e3\u8c03\u7cbe\u5bc6\u5ea6\u3002ADL5380\u9009\u7528\u9ad8\u7d1aSiGe\u53cc\u6b63\u8d1f\u6781\u52a0\u5de5\u5de5\u827a\u751f\u4ea7\u5236\u9020\uff0c\u7ed9\u4e884 mm \u00d7 4 mm\u300124\u7ba1\u811a\u4e2d\u5c0f\u578bLFCSP\u5c01\u88c5\u3002<\/p>\n<p>ADC\u63a7\u5236\u5668\u548c\u9ad8\u50cf\u7d20\u9ad8\u7cbe\u5bc6ADC<\/p>\n<p>ADA4940-2\u5168\u5dee\u5206\u4fe1\u53f7\u53cc\u901a\u9053\u5185\u5b58\u653e\u5927\u4eea\u5177\u5907\u4f18\u5f02\u7684\u52a8\u6001\u6027\u7279\u6027\u548c\u53ef\u8c03\u5f0f\u5bfc\u51fa\u5171\u6a21\u7535\u538b\uff0c\u662f\u63a8\u52a8\u9ad8\u50cf\u7d20\u53cc\u901a\u9053\u5185\u5b58SAR ADC\u7684\u6ee1\u610f\u4e4b\u9009\u3002ADA4940-2\u9009\u75285 V\u5355\u5f00\u5173\u7535\u6e90\u914d\u7535\uff0c\u4ee52.5 V\u5171\u6a21\u7535\u538b\u7ed9\u4e88\u00b15 V\u5dee\u5206\u4fe1\u53f7\u5bfc\u51fa\u3002 \u4f9d\u636e\u914d\u5907\u53ef\u7ed9\u4e882\u500d\u6536\u83b7\uff086 dB\uff09\uff0c\u5e76\u628aADC\u952e\u5165\u63a8\u52a8\u81f3\u6ee1\u5ea6\u3002RC<u>\u8fc7\u6ee4\u5668<\/u>\uff0822 \u03a9\/2.7 nF\uff09\u53ef\u9650\u5b9a\u566a\u97f3\uff0c\u964d\u4f4e\u6765\u6e90\u4e8eADC\u952e\u5165\u7aef\u8d1f\u8f7d<u>\u6a21\u6570\u8f6c\u6362\u5668<\/u>\uff08<u>DAC<\/u>\uff09\u7684\u53cd\u51b2\u529b\u3002ADA4940-2\u9009\u7528\u4e13\u5229\u6743\u7684SiGe\u76f8\u8f85\u76f8\u6210\u53cc\u6b63\u8d1f\u6781\u52a0\u5de5\u5de5\u827a\u751f\u4ea7\u5236\u9020\uff0c\u7ed9\u4e884 mm \u00d7 4 mm\u300124\u7ba1\u811a\u4e2d\u5c0f\u578bLFCSP\u5c01\u88c5\u3002<\/p>\n<p>AD7903\u53cc\u901a\u9053\u5185\u5b58\u300116\u4f4d\u30011 MSPS SAR ADC\u5177\u5907\u4f18\u5f02\u7684\u7cbe\u5bc6\u5ea6\uff0cFS\u6536\u83b7\u504f\u5dee\u4e3a\u00b10.006%\uff0c\u5931\u8861\u504f\u5dee\u4e3a\u00b10.015 mV\u3002AD7903\u9009\u75282.5 V\u5355\u5f00\u5173\u7535\u6e90\u914d\u7535\uff0c1 MSPS\u65f6\u529f\u80fd\u635f\u8017\u4ec5\u4e3a12 mW\u3002\u5e94\u7528\u9ad8\u50cf\u7d20ADC\u7684\u9996\u8981\u76ee\u7684\u662f\u5b8c\u6210\u00b11\u00b0\u7684\u76f8\u4f4d\u5dee\u7cbe\u5bc6\u5ea6\uff0c\u5c24\u5176\u662f\u5f53\u952e\u5165\u4fe1\u606f\u7684\u76f4\u6d41\u7535\u529b\u5ea6\u8f83\u949f\u5934\u3002 ADC\u6240\u89c4\u5b9a\u76845 V\u6807\u51c6\u7535\u538b\u6e90\u7531ADR435\u4f4e\u566a\u97f3\u6807\u51c6\u7535\u538b\u6e90\u9020\u6210\u3002<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc041f8.jpg\" alt=\"\u7535\u8def\u7b14\u8bb0\uff1aRF\u81f3\u4f4d\u89e3\u51b3\u65b9\u6848\u53ef\u63d0\u4f9b6 GHz\u4fe1\u53f7\u7684\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\" width=\"558\" height=\"363\" border=\"0\" \/><\/p>\n<p>\u56fe2. \u8fd0\u7528\u6b63\u4ea4\u548c\u8c03\u5236\u89e3\u8c03\u5668\u7cbe\u786e\u6d4b\u91cf\u529b\u5ea6\u548c\u76f8\u4f4d\u5dee<\/p>\n<p>\u56fe\u6ce8\uff1a<\/p>\n<p>Let \u03c9RF=\u03c9LO difference <u>te<\/u>rm at dc\uff1a\u4ee4\u03c9RF=\u03c9LO\u5dee\u9879\uff08\u76f4\u6d41\u7535\uff09<\/p>\n<p>Sum term gets filtered\uff1a\u548c\u9879\u88ab\u8fc7\u8651\u6389<\/p>\n<p>\u666e\u904d\u8f6c\u53d8<\/p>\n<p>\u5e94\u7528ADL5387 30 MHz\u81f32 GHz\u6b63\u4ea4\u548c\u8c03\u5236\u89e3\u8c03\u5668\u53ef\u5c06\u7535\u6e90\u7535\u8def\u7684\u5de5\u4f5c\u9891\u7387\u8303\u7574\u62d3\u5c55\u81f3\u8f83\u4f4e\u5de5\u4f5c\u9891\u7387\u3002<\/p>\n<p>\u4f9d\u636e\u5b9e\u9645\u7684\u8fd0\u7528\uff0c\u5f88\u6709\u53ef\u80fd\u5fc5\u987b\u5728\u8c03\u5236\u89e3\u8c03\u5668\u548cADC\u4e2d\u95f4\u5e94\u7528\u653e\u5927\u4eea\uff0c\u4e5f\u5f88\u6709\u53ef\u80fd\u4e0d\u7528\u3002ADL5380\u53ef\u4ee5\u4e0eAD7903\u7acb\u5373<u>\u63d2\u53e3<\/u>\uff0c\u7531\u4e8e\u8fd9\u4e24\u4e2a\u5143\u5668\u4ef6\u7684\u5171\u6a21\u7535\u538b\u662f\u517c\u5bb9\u7684\u3002 \u5047\u5982\u5e94\u7528\u5171\u6a21\u7535\u538b\u6ca1\u6709\u8c03\u5236\u89e3\u8c03\u5668\u8303\u7574\u5185\u7684\u53e6\u4e00\u4e2aADC\uff0c\u90a3\u9ebc\u5c31\u5fc5\u987b\u7528\u4e00\u4e2a\u653e\u5927\u4eea\uff0c\u4ee5\u6700\u4f4e\u7684\u8f93\u51fa\u529f\u7387\u635f\u5bb3\u5b8c\u6210\u8109\u51b2\u4fe1\u53f7\u53d8\u6362\u3002<\/p>\n<p>AD798x\u548cAD769x\u7cfb\u5217ADC\u53ef\u4f5c\u4e3aAD7903\u7684\u4ee3\u6362\u5143\u5668\u4ef6\u3002<\/p>\n<p>\u7535\u6e90\u7535\u8def\u8bc4\u5b9a\u4e0e<u>\u68c0\u6d4b<\/u><\/p>\n<p>\u5982\u4e0b\u56fe3\u6240\u663e\u793a\uff0c\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u8fd0\u7528ADL5380-EVALZ\u3001ADA4940-2ACP-EBZ\u3001EVAL-AD7903SDZ\u548cEVAL-SDP-CB1Z\u8bc4\u5b9a<u>\u6a21\u5757<\/u>\u5b8c\u6210\u3002 \u8fd9\u79cd\u7535\u6e90\u7535\u8def\u90e8\u4ef6\u5bf9\u4e8e\u5206\u7cfb\u7edf\u4e2d\u7684\u4e92\u8054\u63d0\u5347\u3002 2\u4e2a\u9ad8\u9891\u7387\u9501\u76f8\u73af\u8def\u952e\u5165\u6e90\u7ed9\u4e88RF\u548cLO\u952e\u5165\u6570\u636e\u4fe1\u53f7\u3002<\/p>\n<p>\u88681\u6c47\u603b\u4e86\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u4e2d\u6bcf\u4e2a\u90e8\u4ef6\u7684\u952e\u5165\u548c\u8f93\u51fa\u7535\u538b\u8109\u51b2\u4fe1\u53f7\u3002 \u5728\u8c03\u5236\u89e3\u8c03\u5668\u7684RF\u952e\u5165\u7aef\uff0c11.6 dBm\u7684\u6570\u636e\u4fe1\u53f7\u9020\u6210\u7684\u952e\u5165\u5728ADC\u6ee1\u5ea6\u8303\u7574\u7684-1 dB\u4ee5\u5185\u3002 \u88681\u5047\u8bbeADL5380\u7684\u8f7d\u8377\u4e3a500 \u03a9\uff0c\u53d8\u6362\u6536\u83b7\u4e3a5.3573 dB\uff0c\u5f00\u5173\u7535\u6e90\u6536\u83b7\u4e3a- 4.643 dB\uff1b\u5047\u8bbeADA4940-2\u6536\u83b7\u4e3a6 dB\u3002 \u8be5\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u7684\u6821\u6b63\u7a0b\u5e8f\u6d41\u7a0b\u548c\u7279\u6027\u7d50\u679c\u5c06\u5728\u540e\u9762\u7ae0\u8282\u76ee\u5f55\u63a2\u8ba8\u3002<\/p>\n<p>\u88681. \u56fe1\u4e2d\u7684\u952e\u5165\u548c\u8f93\u51fa\u7535\u538b\u8109\u51b2\u4fe1\u53f7<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc1d9de.jpg\" alt=\"\u88681. \u56fe1\u4e2d\u7684\u8f93\u5165\u548c\u8f93\u51fa\u7535\u538b\u7535\u5e73 \" width=\"620\" height=\"169\" border=\"0\" \/><\/p>\n<p>\u4fe1\u53f7\u63a5\u6536\u5668\u5b50\u7cfb\u7edf\u504f\u5dee\u6821\u6b63<\/p>\n<p>\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u6709\u4e09\u4e2a\u5173\u952e\u504f\u5dee\u6e90\uff1a \u5931\u8861\u3001\u6536\u83b7\u548c\u76f8\u4f4d\u5dee\u3002<\/p>\n<p>I\u548cQ\u5b89\u5168\u901a\u9053\u7684\u6bcf\u4e2a\u5dee\u5206\u4fe1\u53f7\u76f4\u6d41\u7535\u529b\u5ea6\u4e0eRF\u548cLO\u6570\u636e\u4fe1\u53f7\u7684\u76f8\u5bf9\u6027\u76f8\u4f4d\u5dee\u5b58\u6709\u6b63\u5f26\u51fd\u6570\u5173\u8054\u3002 \u56e0\u800c\uff0cI\u548cQ\u5b89\u5168\u901a\u9053\u7684\u7406\u60f3\u5316\u76f4\u6d41\u7535\u529b\u5ea6\u53ef\u4ee5\u5229\u7528\u4e0b\u5217\u65b9\u6cd5\u6d4b\u7b97\u83b7\u5f97\uff1a<\/p>\n<p>\u5de5\u4f5c\u7535\u538bICHANNEL = \u8f83\u5927I\/Q\u5bfc\u51fa \u00d7 cos\uff08\u03b8\uff09 \uff083\uff09<\/p>\n<p>\u5de5\u4f5c\u7535\u538bQCHANNEL= \u8f83\u5927I\/Q\u5bfc\u51fa \u00d7 sin\uff08\u03b8\uff09 \uff084\uff09<\/p>\n<p>\u4f34\u968f\u7740\u76f8\u504f\u79fb\u8fc7\u7535\u6781\u6781\u5316\u5ea7\u6807\uff0c\u7406\u60f3\u5316\u60c5\u51b5\u4e0b\uff0c\u6709\u4e00\u4e9b\u90e8\u4f4d\u4f1a\u9020\u6210\u540c\u6837\u7684\u5de5\u4f5c\u7535\u538b\u3002 \u6bd4\u5982\uff0cI\uff08\u4f59\u5f26\uff09\u5b89\u5168\u901a\u9053\u4e0a\u7684\u5de5\u4f5c\u7535\u538b\u5e94\u4e0e 90\u00b0\u6216-90\u00b0\u76f8\u4f4d\u540c\u6837\u3002 \u6b8a\u4e0d\u77e5\uff0c\u9488\u5bf9\u672c\u5e94\u9020\u6210\u540c\u6837\u76f4\u6d41\u7535\u529b\u5ea6\u7684\u952e\u5165\u76f8\u4f4d\u5dee\uff0c\u5300\u901f\u8fd0\u52a8\u76f8\u4f4d\u504f\u5dee\uff08\u4e0d\u4f1a\u53d7\u5230RF\u548cLO\u7684\u76f8\u5bf9\u6027\u76f8\u4f4d\u5dee\u5371\u5bb3\uff09\u4f1a\u9020\u6210\u5206\u7cfb\u7edf\u5b89\u5168\u901a\u9053\u9020\u6210\u4e0d\u4e00\u6837\u7d50\u679c\u3002 \u8fd9\u6837\u7684\u4e8b\u60c5\u5982\u4e0b\u56fe4\u548c\u56fe5\u6240\u663e\u793a\uff0c\u5728\u5176\u4e2d\uff0c\u5f53\u952e\u5165\u5e94\u662f0 V\u65f6\uff0c\u7d50\u679c\u9020\u6210\u4e862\u4e2a\u4e0d\u4e00\u6837\u7684\u5bfc\u51fa\u7801\u3002\u8fd9\u6837\u7684\u4e8b\u60c5\u4e0b\uff0c-37\u00b0\u7684\u76f8\u4f4d\u8fdc\u8fdc\u5730\u8d85\u8fc7\u5e26\u6709<u>\u9501\u76f8\u73af\u8def<\/u>\u7684\u771f\u6b63\u7cfb\u7edf\u8f6f\u4ef6\u7684\u9884\u4f30\u503c\u3002 \u7d50\u679c\uff0c 90\u00b0\u4e8b\u5b9e\u4e0a\u4e3b\u8981\u8868\u73b0\u4e3a 53\u00b0\uff0c-90\u00b0\u4e3b\u8981\u8868\u73b0\u4e3a-127\u00b0\u3002<\/p>\n<p>\u56fe3. \u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u8bc4\u5b9a\u670d\u52a1\u5e73\u53f0<\/p>\n<p>\u88682. 0 dBm RF\u952e\u5165\u8bc4\u6d4b\u76f8\u4f4d<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc34f1d.jpg\" alt=\"\u88682. 0 dBm RF\u8f93\u5165\u5b9e\u6d4b\u76f8\u79fb \" width=\"620\" height=\"222\" border=\"0\" \/><\/p>\n<p>\u6839\u636e10\u4e2a\u6d41\u7a0b\u4ece-180\u00b0\u5230 180\u00b0\u641c\u96c6\u7d50\u679c\uff0c\u5728\u5176\u4e2d\uff0c\u672a\u6821\u51c6\u6570\u636e\u4fe1\u606f\u9020\u6210\u56fe4\u548c\u56fe5\u6240\u663e\u793a\u692d\u5706\u578b\u3002\u6839\u636e\u660e\u786e\u7cfb\u7edf\u4e2d\u7684\u9644\u52a0\u76f8\u4f4d\u91cf\uff0c\u53ef\u4ee5\u5904\u7406\u8be5\u504f\u5dee\u95ee\u9898\u3002 \u88682\u8868\u660e\uff0c\u7cfb\u7edf\u8f6f\u4ef6\u76f8\u4f4d\u504f\u5dee\u5728\u5168\u90e8\u5f00\u73af\u4f20\u9012\u51fd\u6570\u8303\u7574\u5185\u5168\u662f\u5300\u901f\u8fd0\u52a8\u4e0d\u4f1a\u6539\u53d8\u7684\u3002<\/p>\n<p>\u7cfb\u7edf\u8f6f\u4ef6\u76f8\u4f4d\u5dee\u504f\u5dee\u6821\u6b63<\/p>\n<p>\u9488\u5bf9\u56fe3\u6240\u663e\u793a\u7cfb\u7edf\u8f6f\u4ef6\uff0c\u5f53\u6b65\u5e45\u4e3a10\u00b0\u65f6\uff0c\u5747\u503c\u8bc4\u6d4b\u76f8\u4f4d\u504f\u5dee\u4e3a-37.32\u00b0\u3002\u5728\u5df2\u7ecf\u77e5\u9053\u8be5\u9644\u52a0\u76f8\u4f4d\u65f6\uff0c\u53ef\u4ee5\u8ba1\u7b97\u7ecf\u8c03\u8282\u7684\u5206\u7cfb\u7edf\u76f4\u6d41\u7535\u538b\u3002 \u81ea\u53d8\u91cf\u03c6PHASE_SHIFT\u754c\u5b9a\u4e3a\u89c2\u5bdf\u5230\u7684\u9644\u52a0\u7cfb\u7edf\u8f6f\u4ef6\u76f8\u4f4d\u7684\u5747\u503c\u3002 \u76f8\u4f4d\u5dee\u8d54\u507f\u6570\u636e\u4fe1\u53f7\u94fe\u4e2d\u5f62\u6210\u7684\u76f4\u6d41\u7535\u538b\u53ef\u4ee5\u6d4b\u7b97\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p>\u5de5\u4f5c\u7535\u538bICHANNEL = \u8f83\u5927I\/Q\u5bfc\u51fa \u00d7 \uff08cos\uff08\u03b8TARGET\uff09cos\uff08\u03c6PHASE_SHIFT\uff09 &#8211; sin\uff08\u03b8TARGET\uff09sin\uff08\u03c6PHASE_SHIFT\uff09\uff09 \uff085\uff09<\/p>\n<p>\u5de5\u4f5c\u7535\u538bQCHANNEL = \u8f83\u5927I\/Q\u5bfc\u51fa \u00d7 \uff08sin\uff08\u03b8TARGET\uff09cos\uff08\u03c6PHASE_SHIFT\uff09 cos\uff08\u03b8TARGET\uff09sin\uff08\u03c6PHASE_SHIFT\uff09\uff09 \uff086\uff09<\/p>\n<p>\u9488\u5bf9\u7ed9\u51fa\u7684\u76f8\u4f4d\u5dee\u8bbe\u5b9a\uff0c\u5f0f\u5b505\u548c\u5f0f\u5b506\u6253\u9020\u4e86\u603b\u4f53\u76ee\u6807\u952e\u5165\u5de5\u4f5c\u7535\u538b\u3002 \u5982\u4eca\uff0c\u5206\u7cfb\u7edf\u5df2\u5f52\u4e00\u5316\u5904\u7406\uff0c\u53ef\u4ee5\u6821\u51c6\u5931\u8861\u504f\u5dee\u548c\u6536\u83b7\u504f\u5dee\u4e86\u3002\u56fe4\u548c\u56fe5\u4e2d\u540c\u65f6\u8868\u660e\u4e86\u5f52\u4e00\u5316\u5904\u7406\u7684I\u548cQ\u5b89\u5168\u901a\u9053\u7d50\u679c\u3002\u5bf9\u6570\u636e\u5f00\u5c55\u56de\u5f52\u5206\u6790\u6d4b\u7b97\uff0c\u7d50\u679c\u5c06\u9020\u6210\u56fe\u5185\u6240\u663e\u793a\u6700\u4f73\u7ebf\u6027\u62df\u5408\u7ebf\u3002 \u8be5\u7ebf\u6027\u62df\u5408\u7ebf\u4e3a\u6bcf\u4e2a\u53d8\u6362\u6570\u636e\u4fe1\u53f7\u94fe\u7684\u8bc4\u6d4b\u5206\u7cfb\u7edf\u5f00\u73af\u4f20\u9012\u51fd\u6570\u3002<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc4debd.jpg\" alt=\"\u56fe4. \u7ebf\u6027\u5316\u7684I\u901a\u9053\u7ed3\u679c \" width=\"291\" height=\"236\" border=\"0\" \/><\/p>\n<p>\u56fe4. \u5f52\u4e00\u5316\u5904\u7406\u7684I\u5b89\u5168\u901a\u9053\u7d50\u679c<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc60a66.jpg\" alt=\"\u56fe5. \u7ebf\u6027\u5316\u7684Q\u901a\u9053\u7ed3\u679c \" width=\"293\" height=\"236\" border=\"0\" \/><\/p>\n<p>\u56fe5. \u5f52\u4e00\u5316\u5904\u7406\u7684Q\u5b89\u5168\u901a\u9053\u7d50\u679c<\/p>\n<p>\u7cfb\u7edf\u8f6f\u4ef6\u5931\u8861\u548c\u6536\u83b7\u504f\u5dee\u6821\u6b63<\/p>\n<p>\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u4e2d\u5404\u6570\u636e\u4fe1\u53f7\u94fe\u7684\u7406\u60f3\u5316\u5931\u8861\u5e94\u662f0 LSB\uff0c\u53ef\u662f\uff0c\u9488\u5bf9I\u5b89\u5168\u901a\u9053\u548cQ\u5b89\u5168\u901a\u9053\uff0c\u8bc4\u6d4b\u5931\u8861\u5404\u81ea\u4e3a-12.546 LSB\u548c 22.599 LSB\u3002 \u6700\u4f73\u7ebf\u6027\u62df\u5408\u7ebf\u7684\u76f4\u7ebf\u659c\u7387\u610f\u5473\u7740\u5206\u7cfb\u7edf\u7684\u76f4\u7ebf\u659c\u7387\u3002 \u7406\u60f3\u5316\u5206\u7cfb\u7edf\u76f4\u7ebf\u659c\u7387\u53ef\u786e\u5b9a\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc73705.jpg\" alt=\"\u7535\u8def\u7b14\u8bb0\uff1aRF\u81f3\u4f4d\u89e3\u51b3\u65b9\u6848\u53ef\u63d0\u4f9b6 GHz\u4fe1\u53f7\u7684\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\" width=\"298\" height=\"114\" border=\"0\" \/><\/p>\n<p>\uff087\uff09<\/p>\n<p>\u56fe4\u548c\u56fe5\u4e2d\u7684\u7ed3\u679c\u663e\u793a\uff0cI\u5b89\u5168\u901a\u9053\u548cQ\u5b89\u5168\u901a\u9053\u7684\u8bc4\u6d4b\u76f4\u7ebf\u659c\u7387\u5404\u81ea\u4e3a6315.5\u548c6273.1\u3002 \u4e3a\u4e86\u66f4\u597d\u5730\u6821\u51c6\u7cfb\u7edf\u8f6f\u4ef6\u6536\u83b7\u504f\u5dee\uff0c\u52a1\u5fc5\u8c03\u8282\u8fd9\u79cd\u76f4\u7ebf\u659c\u7387\u3002 \u6821\u51c6\u6536\u83b7\u504f\u5dee\u548c\u5931\u8861\u504f\u5dee\u53ef\u4ee5\u4fdd\u8bc1\uff0c\u8fd0\u7528\u5f0f\u5b501\u6d4b\u7b97\u83b7\u5f97\u7684\u7535\u78c1\u6ce2\u529b\u5ea6\u4e0e\u7406\u60f3\u5316\u6570\u636e\u4fe1\u53f7\u529b\u5ea6\u76f8\u7b26\u5408\u3002 \u5931\u8861\u6821\u51c6\u4e0e\u8bc4\u6d4b\u5931\u8861\u504f\u5dee\u6070\u597d\u53cd\u8fc7\u6765\uff1a<\/p>\n<p>\u5931\u8861\u504f\u5dee\u6821\u51c6 = \u2013\u8bc4\u6d4b\u5931\u8861\u504f\u5dee<\/p>\n<p>\u6536\u83b7\u504f\u5dee\u6821\u51c6\u6307\u6570\u4e3a\uff1a \uff088\uff09<\/p>\n<p>\u6536\u83b7\u504f\u5dee\u6821\u51c6 = \u7406\u60f3\u5316\u76f4\u7ebf\u659c\u7387 \/ \u8bc4\u6d4b\u76f4\u7ebf\u659c\u7387 \uff089\uff09<\/p>\n<p>\u63a5\u53d7\u53d8\u6362\u7d50\u679c\u53ef\u6839\u636e\u4e0b\u5217\u65b9\u6cd5\u6821\u51c6\uff1a<\/p>\n<p>\u6821\u51c6\u8fc7\u7684\u5bfc\u51fa\u7f16\u7801 = \uff08 \u63a5\u53d7\u5bfc\u51fa\u7f16\u7801 \u00d7 \u7406\u60f3\u5316\u76f4\u7ebf\u659c\u7387 \uff09\/ \u8bc4\u6d4b\u76f4\u7ebf\u659c\u7387 \u5931\u8861\u504f\u5dee\u6821\u51c6 \uff0810\uff09<\/p>\n<p>\u5206\u7cfb\u7edf\u7684\u6821\u6b63\u76f4\u6d41\u7535\u952e\u5165\u5de5\u4f5c\u7535\u538b\u6309\u4e0b\u5217\u65b9\u6cd5\u6d4b\u7b97\uff1a<\/p>\n<p>\u8bc4\u6d4b\u6570\u636e\u4fe1\u53f7\u952e\u5165\u5de5\u4f5c\u7535\u538b = \uff082 \u00d7 <u>VR<\/u>EF \u00d7 \u6821\u51c6\u8fc7\u7684\u5bfc\u51fa\u7f16\u7801\uff09\/\uff082N &#8211; 1\uff09 \uff0811\uff09<\/p>\n<p>\u8981\u7edf\u8ba1\u5404\u5206\u7cfb\u7edf\u6570\u636e\u4fe1\u53f7\u94fe\u7684\u8ba4\u77e5\u4eff\u771f\u6a21\u62df\u952e\u5165\u5de5\u4f5c\u7535\u538b\uff0c\u5219\u987b\u5728I\u5b89\u5168\u901a\u9053\u548cQ\u5b89\u5168\u901a\u9053\u4e0a\u5e94\u7528\u5f0f\u5b5011\u3002 \u8fd0\u7528\u8fd9\u79cd\u5f7b\u5e95\u8c03\u8282\u8fc7\u7684I\u5b89\u5168\u901a\u9053\u548cQ\u5b89\u5168\u901a\u9053\u5de5\u4f5c\u7535\u538b\u6765\u6d4b\u7b97\u4ee5\u5404\u76f4\u6d41\u7535\u6570\u636e\u4fe1\u53f7\u529b\u5ea6\u754c\u5b9a\u7684RF\u6570\u636e\u4fe1\u53f7\u529b\u5ea6\u3002 \u8981\u8bc4\u5b9a\u5168\u90e8\u6821\u6b63\u7a0b\u5e8f\u6d41\u7a0b\u7684\u7cbe\u5bc6\u5ea6\uff0c\u53ef\u4ee5\u628a\u91c7\u96c6\u5230\u7684\u7d50\u679c\u8f6c\u5316\u6210\u534f\u5546\u5668\u5bfc\u51fa\u7aef\u9020\u6210\u7684\u7406\u60f3\u5316\u5206\u7cfb\u7edf\u5de5\u4f5c\u7535\u538b\uff08\u5047\u5b9a\u672a\u627e\u5230\u76f8\u4f4d\u504f\u5dee\uff09\uff1b\u8fd9\u53ef\u4ee5\u5229\u7528\u4e0b\u5217\u65b9\u6cd5\u5b8c\u6210\uff1a\u7528\u524d\u8fb9\u6d4b\u7b97\u83b7\u5f97\u7684\u5747\u503c\u76f4\u6d41\u7535\u529b\u5ea6\u4e58\u4e8e\u6bcf\u4e00\u6b21\u5b9e\u9a8c\u7684\u8bc4\u6d4b\u76f8\u4f4d\u5dee\u6b63\u5f26\u51fd\u6570\u6210\u7ee9\uff08\u795b\u9664\u5728\u5176\u4e2d\u6d4b\u7b97\u83b7\u5f97\u7684\u76f8\u4f4d\u504f\u5dee\uff09\u3002 \u6d4b\u7b97\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p>\u5f7b\u5e95\u6821\u51c6I\u5b89\u5168\u901a\u9053\u5de5\u4f5c\u7535\u538b = \u5747\u503c\u6821\u6b63\u540e\u529b\u5ea6 \u00d7 \uff08cos\uff08\u03b8MEASURED\uff09cos\uff08\u03c6PHASE_SHIFT\uff09 sin\uff08\u03b8MEASURED\uff09sin\uff08\u03c6PHASE_SHIFT\uff09\uff09 \uff0812\uff09<\/p>\n<p>\u5f7b\u5e95\u6821\u51c6Q\u5b89\u5168\u901a\u9053\u5de5\u4f5c\u7535\u538b = \u5747\u503c\u6821\u6b63\u540e\u529b\u5ea6 \u00d7 \uff08sin\uff08\u03b8MEASURED\uff09cos\uff08\u03c6PHASE_SHIFT\uff09 &#8211; cos\uff08\u03b8MEASURED\uff09sin\uff08\u03c6PHASE_SHIFT\uff09\uff09 \uff0813\uff09<\/p>\n<p>\u5728\u5176\u4e2d\uff1a<\/p>\n<p>\u03c6PHASE_SHIFT\u662f\u524d\u8fb9\u6d4b\u7b97\u83b7\u5f97\u7684\u76f8\u4f4d\u5dee\u504f\u5dee\u3002<\/p>\n<p>\u5747\u503c\u6821\u6b63\u540e\u529b\u5ea6\u662f\u6765\u6e90\u4e8e\u5f0f\u5b501\u7684\u76f4\u6d41\u7535\u529b\u5ea6\u7d50\u679c\uff0c\u65e9\u5df2\u8fc7\u5931\u8861\u504f\u5dee\u548c\u6536\u83b7\u504f\u5dee\u8d54\u507f\u3002<\/p>\n<p>\u88683\u6240\u663e\u793a\u4e3a\u57280 dBm RF\u952e\u5165\u529b\u5ea6\u6807\u51c6\u4e0b\uff0c\u5404\u603b\u4f53\u76ee\u6807\u76f8\u4f4d\u5dee\u952e\u5165\u7684\u6821\u6b63\u7a0b\u5e8f\u6d41\u7a0b\u7684\u7d50\u679c\u3002 \u5f0f\u5b5012\u548c\u5f0f\u5b5013\u6d4b\u7b97\u83b7\u5f97\u7684\u6821\u6b63\u56e0\u5b50\u5c06\u96c6\u6210\u5316\u5230\u81f4\u529b\u4e8e\u4ee5\u672c\u7535\u6e90\u7535\u8def\u624b\u8bb0\u6240\u663e\u793a\u65b9\u6cd5\u68c0\u9a8c\u76f8\u4f4d\u5dee\u548c\u8303\u56f4\u7684\u4e00\u5207\u7cfb\u7edf\u8f6f\u4ef6\u5f53\u4e2d\u3002<\/p>\n<p>\u88683. 0 dBm RF\u952e\u5165\u529b\u5ea6\u6807\u51c6\u4e0b\u4e00\u4e9b\u603b\u4f53\u76ee\u6807\u76f8\u4f4d\u5dee\u952e\u5165\u7aef\u5b8c\u6210\u7684\u7d50\u679c<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc85951.jpg\" alt=\"\u7535\u8def\u7b14\u8bb0\uff1aRF\u81f3\u4f4d\u89e3\u51b3\u65b9\u6848\u53ef\u63d0\u4f9b6 GHz\u4fe1\u53f7\u7684\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\" width=\"343\" height=\"168\" border=\"0\" \/><\/p>\n<p>\u56fe6\u4e3a\u8bc4\u6d4b\u80af\u5b9a\u76f8\u4f4d\u5dee\u504f\u5dee\u6761\u5f62\u56fe\uff0c\u5728\u5176\u4e2d\uff0c\u9488\u5bf9\u4ece-180\u00b0\u5230 180\u00b0\u7684\u6bcf10\u00b0\u6b65\u5e45\uff0c\u5176\u7cbe\u5bc6\u5ea6\u5747\u9ad8\u8fc71\u00b0\u3002<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbc9c72a.jpg\" alt=\"\u7535\u8def\u7b14\u8bb0\uff1aRF\u81f3\u4f4d\u89e3\u51b3\u65b9\u6848\u53ef\u63d0\u4f9b6 GHz\u4fe1\u53f7\u7684\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\" width=\"297\" height=\"258\" border=\"0\" \/><\/p>\n<p>\u56fe6. 0 dBm\u952e\u5165\u8109\u51b2\u4fe1\u53f7\uff08\u76f8\u4f4d\u5dee\u6b65\u5e45\u4e3a10\u00b0\uff09\u6807\u51c6\u4e0b\u7684\u8bc4\u6d4b\u80af\u5b9a\u76f8\u4f4d\u5dee\u504f\u5dee\u6761\u5f62\u56fe<\/p>\n<p>\u4e3a\u4e86\u66f4\u597d\u5730\u5728\u4efb\u610f\u7ed9\u51fa\u952e\u5165\u8109\u51b2\u4fe1\u53f7\u6807\u51c6\u4e0b\u7cbe\u51c6\u6d4b\u91cf\u76f8\u4f4d\u5dee\uff0cRF\u76f8\u5bf9\u6027\u4e8eLO\u7684\u8ba4\u77e5\u76f8\u4f4d\u504f\u5dee\uff08\u03c6PHASE_SHIFT\uff09\u5e94\u5300\u901f\u8fd0\u52a8\u4e0d\u4f1a\u6539\u53d8\u3002 \u5047\u5982\u8bc4\u6d4b\u76f8\u4f4d\u504f\u5dee\u9010\u6e10\u4ee5\u603b\u4f53\u76ee\u6807\u76f8\u4f4d\u5dee\u6b65\u5e45\uff08\u03b8TARGET\uff09\u6216\u529b\u5ea6\u51fd\u6570\u516c\u5f0f\u7684\u65b9\u5f0f\u4ea7\u751f\u53d8\u5316\uff0c\u5219\u8fd9\u513f\u6240\u63d0\u6821\u6b63\u7a0b\u5e8f\u6d41\u7a0b\u7684\u7cbe\u5bc6\u5ea6\u5c06\u9010\u6e10\u964d\u4f4e\u3002 \u5ba4\u5185\u6e29\u5ea6\u4e0b\u7684\u8bc4\u5b9a\u6570\u636e\u663e\u793a\uff0c900 MHz\u6807\u51c6\u4e0b\uff0c\u9488\u5bf9\u6700\u9ad8\u503c\u4e3a11.6 dBm\u3001\u6781\u5c0f\u503c\u7ea6\u4e3a-20 dBm\u7684RF\u529b\u5ea6\u6765\u8bb2\uff0c\u76f8\u4f4d\u504f\u5dee\u7ef4\u6301\u76f8\u5bf9\u6027\u5300\u901f\u8fd0\u52a8\u3002<\/p>\n<p>\u56fe7\u6240\u663e\u793a\u4e3a\u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u7684\u91c7\u6837\u7387\u53ca\u5176\u76f8\u5bf9\u5e94\u529b\u5ea6\u9020\u6210\u7684\u9644\u52a0\u76f8\u4f4d\u5dee\u504f\u5dee\u3002 \u5f53\u952e\u5165\u529b\u5ea6\u964d\u81f3-20 dBm\u4e0b\u5217\u65f6\uff0c\u76f8\u4f4d\u5dee\u504f\u5dee\u6821\u6b63\u7cbe\u5bc6\u5ea6\u5c06\u9010\u6e10\u4e0b\u964d\u3002\u7cfb\u7edf\u8f6f\u4ef6\u5ba2\u6237\u5fc5\u987b\u660e\u786e\u53ef\u63a5\u7eb3\u7684\u6570\u636e\u4fe1\u53f7\u94fe\u504f\u5dee\u6c34\u51c6\uff0c\u4ee5\u786e\u4fdd\u53ef\u63a5\u7eb3\u7684\u6700\u5c11\u6570\u636e\u4fe1\u53f7\u529b\u5ea6\u3002<\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215132100-61b9ebbcafd4c.jpg\" alt=\"\u7535\u8def\u7b14\u8bb0\uff1aRF\u81f3\u4f4d\u89e3\u51b3\u65b9\u6848\u53ef\u63d0\u4f9b6 GHz\u4fe1\u53f7\u7684\u7cbe\u5bc6\u76f8\u4f4d\u548c\u5e45\u5ea6\u6570\u636e\" width=\"339\" height=\"255\" border=\"0\" \/><\/p>\n<p>\u56fe7. \u4fe1\u53f7\u63a5\u6536\u5668\u5206\u7cfb\u7edf\u7684\u91c7\u6837\u7387\u53ca\u5176\u76f8\u5bf9\u5e94\u7684\u9644\u52a0\u76f8\u4f4d\u5dee\u504f\u5dee<\/p>\n<p>\u56fe7\u6240\u663e\u793a\u7d50\u679c\u75285 V ADC\u6807\u51c6\u7535\u538b\u6e90\u641c\u96c6\u3002 \u8be5ADC\u6807\u51c6\u7535\u538b\u6e90\u7684\u529b\u5ea6\u53ef\u4ee5\u51cf\u5c11\uff0c\u8fdb\u800c\u4e3a\u8bbe\u5907\u7ed9\u4e88\u66f4\u5c0f\u7684\u91cf\u5316\u5206\u6790\u6c34\u51c6\uff1b\u90a3\u6837\uff0c\u5728\u5c0f\u6570\u636e\u4fe1\u53f7\u6807\u51c6\u4e0b\uff0c\u76f8\u4f4d\u5dee\u504f\u5dee\u7cbe\u5bc6\u5ea6\u4f1a\u7a0d\u6709\u63d0\u9ad8\uff0c\u4f46\u4f1a\u63d0\u5347\u7cfb\u7edf\u8f6f\u4ef6\u9971\u548c\u72b6\u6001\u6982\u7387\u3002 \u4e3a\u4e86\u66f4\u597d\u5730\u589e\u5f3a\u7cfb\u7edf\u8f6f\u4ef6\u91c7\u6837\u7387\uff0c\u53e6\u4e00\u79cd\u65b9\u6cd5\u662f\u9009\u7528\u4e00\u79cd\u8fc7\u91c7\u6837\u8ba1\u5212\u65b9\u6848\uff0c\u8be5\u8ba1\u5212\u65b9\u6848\u53ef\u4ee5\u63d0\u5347ADC\u7684\u65e0\u566a\u97f3\u4f4d\u5c4f\u5e55\u5206\u8fa8\u7387\u3002 \u6c42\u5e73\u5747\u503c\u7684\u53d6\u6837\u6bcf\u589e\u52a0\u4e00\u500d\uff0c\u7d50\u679c\u53ef\u4f7f\u7cfb\u7edf\u8f6f\u4ef6\u5c4f\u5e55\u5206\u8fa8\u7387\u63d0\u53471\/2 LSB\u3002 \u7ed9\u51fa\u5c4f\u5e55\u5206\u8fa8\u7387\u589e\u52a0\u91cf\u7684\u8fc7\u91c7\u6837\u6bd4\u8ba1\u7b97\u65b9\u5f0f\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p>\u8fc7\u91c7\u6837\u9891\u7387 = 22N<\/p>\n<p>\u5728\u5176\u4e2d\uff0cN\u4e3a\u63d0\u5347\u7684\u5341\u4f4d\u6570\u3002<\/p>\n<p>\u5f53\u566a\u97f3\u529b\u5ea6\u4e0d\u4f1a\u518d\u80fd\u4efb\u610f\u66f4\u6539\u5404\u53d6\u6837\u7684ADC\u5bfc\u51fa\u7f16\u7801\u65f6\uff0c\u8fc7\u91c7\u6837\u505a\u5230\u4e00\u4e2a\u7ecf\u6d4e\u6548\u76ca\u4e0b\u964d\u70b9\u3002 \u5728\u8be5\u70b9\u65f6\uff0c\u7cfb\u7edf\u8f6f\u4ef6\u7684\u5408\u7406\u5c4f\u5e55\u5206\u8fa8\u7387\u5c06\u65e0\u6cd5\u518d\u5ea6\u63d0\u9ad8\u3002 \u8fc7\u91c7\u6837\u9020\u6210\u7684\u7f51\u7edc\u5e26\u5bbd\u964d\u4f4e\u5e76\u4e0d\u662f\u95ee\u9898\uff0c\u7531\u4e8e\u7cfb\u7edf\u8f6f\u4ef6\u662f\u4ee5\u8fdf\u7f13\u8f6c\u53d8\u7684\u529b\u5ea6\u7cbe\u786e\u6d4b\u91cf\u6570\u636e\u4fe1\u53f7\u7684\u3002<\/p>\n<p>AD7903\u8bc4\u5b9aAPP\u7ed9\u4e88\u4e00\u4e2a\u6821\u6b63\u7a0b\u5e8f\u6d41\u7a0b\uff0c\u5bb9\u8bb8\u5ba2\u6237\u5bf9\u4e8e\u4e09\u4e2a\u504f\u5dee\u6e90\uff0c\u5bf9ADC\u5bfc\u51fa\u7d50\u679c\u5f00\u5c55\u6821\u51c6\uff1a\u76f8\u4f4d\u5dee\u3001\u6536\u83b7\u548c\u5931\u8861\u3002 \u5ba2\u6237\u5fc5\u987b\u641c\u96c6\u7cfb\u7edf\u8f6f\u4ef6\u6ca1\u7ecf\u6821\u51c6\u7684\u7d50\u679c\uff0c\u660e\u786e\u672c\u7535\u6e90\u7535\u8def\u624b\u8bb0\u6d4b\u7b97\u7684\u6821\u6b63\u6307\u6570\u3002 \u56fe8\u6240\u663e\u793a\u4e3a<u>\u56fe\u578b<\/u>\u64cd\u4f5c\u754c\u9762\u7684Amp\/Phase Panel\u83dc\u5355\u680f\uff0c\u5728\u5176\u4e2d\uff0c\u6821\u6b63\u6307\u6570\u5df2\u7a81\u51fa\u663e\u793a\u3002 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