{"id":19874,"date":"2022-01-23T10:12:50","date_gmt":"2022-01-23T02:12:50","guid":{"rendered":"https:\/\/www.paiqinano.com\/?p=19874"},"modified":"2022-01-22T09:50:49","modified_gmt":"2022-01-22T01:50:49","slug":"%e7%9b%b4%e7%ba%bf%e7%8a%b6%e4%b8%8e%e4%b8%8d%e8%a7%84%e5%88%99%e7%8a%b6%e7%9a%84pattern%e5%b7%ae%e5%bc%82%e5%af%b9%e7%94%b5%e8%b7%af%e6%9d%bf%e8%be%90%e5%b0%84%e4%b8%8e%e9%98%bb%e6%8a%97%e7%9a%84","status":"publish","type":"post","link":"https:\/\/www.paiqinano.com\/?p=19874","title":{"rendered":"\u76f4\u7ebf \u4e0e\u4e0d\u89c4\u5219 pattern\u7684\u5dee\u5f02 \u5bf9\u7535\u8def\u677f \u8f90\u5c04 \u548c\u963b\u6297 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\u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe2 7\u79cd\u8def\u7ebfpattern\u5bf9\u7279\u6027\u963b\u6297\u7684\u5371\u5bb3<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215131248-61b9e9d09f020.png\" alt=\" \u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe3 \u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u5f2f\u6298\u4e0e\u7279\u6027\u963b\u6297 Zo \u7684\u8f6c\u53d8<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215131248-61b9e9d0b896b.png\" alt=\" \u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe4 \u8bd5\u9a8c\u7528\u7535\u6e90\u7535\u8def<\/p>\n<p>\u56fe5\u662f\u4ee5\u4e0a\u5b9e\u9a8c\u5ba4\u5f97\u5230\u7684\u8f90\u5c04\u6e90\u6750\u6599\u3002\u5982\u4e0b\u56fe\u6240\u793a7\u79cd\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u90fd\u662f\u6709\u957f70mm\u7684\u5e73\u884c\u7ebf\u4e00\u90e8\u5206\uff0cE\u4e0eG\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7684\u5de5\u4f5c\u9891\u7387\u4e3a650\uff5e850MHz\uff0c\u5e73\u884c\u7ebf\u4e00\u90e8\u5206\u957f\u77ed\u4e3a130 mm\u7684;D\u4e0eF\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u6709\u5de5\u4f5c\u9891\u7387\u4e3a350\uff5e450MHz\uff0c\u5177\u5907\u8f83\u591a\u7684\u8f90\u5c04\u6e90\u3002<\/p>\n<p>\u82e5\u5c06\u7ebf\u8def\u677f\u7684\u8bf1\u7535\u7387\u03b5\u5f52\u5165\u8003\u8651\u5230\uff0c\u800c\u4e14\u5047\u5b9a\u7535\u8def\u677f\u4e0a\u7684\u5149\u7684\u901f\u5ea6\u4e3a\u65f6\uff1a<\/p>\n<p>650 MHz\u7684\u5149\u6ce2\u957f\u03bb=277mm\uff0c\u03bb\/4=70mm<\/p>\n<p>650 MHz\u7684\u5149\u6ce2\u957f\u03bb=514mm\uff0c\u03bb\/4=130mm<\/p>\n<p>\u4ee5\u6b64\u5c31\u53ef\u63a8\u7406\u300c\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u5e73\u884c\u7ebf\u4e00\u90e8\u5206\u300d\u4e0e\u300c\u5bfc\u81f4\u8f90\u5c04\u6e90\u6700\u9ad8\u503c\u7684\u5149\u6ce2\u957f\u300d\u4e8c\u8005\u7684\u5173\u8fde\u6027\uff0c\u6362\u53e5\u8bdd\u8bf4\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u5e73\u884c\u7ebf\u4e00\u90e8\u5206\u65f6\u95f4\u8f83\u77ed\u7684A\u3001B\u3001C\u4e09\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7684\u8f90\u5c04\u6e90\u8f83\u4f4e\uff0c\u76f8\u5f62\u4e4b\u4e0bD\u3001E\u3001F\u7684\u8f90\u5c04\u6e90\u8f83\u4e3a\u5927;\u51f8\u51f9\u96c6\u4e2d\u5316\u7684D\u3001E\u3001F\u7684\u8f90\u5c04\u6e90\u6bd4\u51f8\u51f9\u5206\u6563\u5316\u7684A\u3001B\u3001C\u5927\uff0cG\u5219\u6ca1\u6cd5\u5217\u5165\u53cd\u7701\u8303\u7574\u3002<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215131248-61b9e9d0d9773.png\" alt=\" \u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe5 7\u79cd\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u9020\u6210\u7684\u8f90\u5c04\u6e90<\/p>\n<p>\u4ee5\u4e0a\u8bd5\u9a8c\u7528\u5370\u5237\u7ebf\u8def\u677f\u7684\u7279\u6027\u963b\u6297Zo \u662f\u8fd0\u7528\u56fe6\u7684\u57fa\u7840\u7406\u8bba\u8ba1\u7b97\u65b9\u6cd5\u6240\u83b7\u53d6\u7684\u6570\u503c\uff0c\u4e3a\u4e86\u66f4\u597d\u5730\u6d4b\u91cf\u76f8\u8fd1MHz\u7ea7\u522b\u7ebf\u8def\u677f\u5177\u4f53\u59ff\u52bf\u65f6\u7279\u6027\u963b\u6297\u503c\uff0c\u56e0\u800c\u8fd0\u7528\u56fe7\u6240\u663e\u793aTDR(<u>TI<\/u>me Domain Refrectometer)\u91cf\u6d4b\u5668\u68c0\u9a8c\u7ebf\u8def\u677f\u7684\u7279\u6027\u963b\u6297\u3002TDR\u7684\u59ff\u52bf\u57fa\u672c\u539f\u7406\u662f\u6355\u83b7\u7535\u78c1\u6ce2\u6216\u8005\u8d85\u58f0\u6ce2\u78b0\u649e\u7269\u4ef6\u540e\u4e0b\u964d\u7684\u6570\u636e\u4fe1\u53f7(echo)\u518d\u5c06\u65f6\u95f4\u5dee\u9ad8\u4f4e\u56fe\u8c61\u753b\uff0c\u4ee5\u6b64\u6d4b\u91cf\u7d50\u679c\u5982\u4e0b\u56fe8\u6240\u663e\u793a\u3002\u7531\u56fe\u53ef\u63a8\u65ad\u4ee5\u4e0b\u4e09\u9879\u7ed3\u679c\uff1a<\/p>\n<p>(1)\u3002\u8bc6\u522b\u7801G\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u4ee5\u5916\uff0c\u5176\u4ed6\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7684\u7535\u963b\u503cZo \u5e76\u65e0\u663e\u8457\u5dee\u522b\u3002<\/p>\n<p>(2)\u3002\u8bc6\u522b\u7801C\u3001D\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\uff0c\u952e\u5165\u63a5\u7ebf\u7aef\u5b50\u6b63\u540e\u65b9\u5982\u679c\u6709\u51f8\u51f9\u65f6\uff0c\u5176\u5468\u8fb9\u7684\u7535\u963b\u503cZo \u5f88\u9ad8\u3002<\/p>\n<p>(3)\u3002\u8bc6\u522b\u7801G\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7279\u70b9\u504f\u5dee\u3002<\/p>\n<p>\u5fc5\u4e0d\u53ef\u5c11\u7559\u610f\u7684\u662f\u5305\u62ec\u8bc6\u522b\u7801G\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u518d\u5185\uff0c\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7684\u300c\u7269\u7406\u5b66\u957f\u77ed\u300d\u7269\u7406\u5b66\u957f\u77ed\u7686\u4e3a290mm<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215131249-61b9e9d10307d.png\" alt=\" \u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe6 \u677f\u4e0a\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7c7b\u578b\u7535\u6e90\u7535\u8def<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215131249-61b9e9d1206d5.png\" alt=\" \u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe7 \u7ebf\u8def\u677f\u7684\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u7279\u6027\u963b\u6297\u91cf\u68c0\u6d4b\u7cfb\u7edf<\/p>\n<p><img decoding=\"async\" src=\"\/wp-content\/uploads\/2021\/12\/20211215131249-61b9e9d13a997.png\" alt=\" \u4e0d\u89c4\u5219\u7535\u8def\u8bbe\u8ba1\u5bf9\u8f90\u5c04\u4e0e\u963b\u6297\u7684\u5f71\u54cd\" \/><\/p>\n<p>\u56fe8 7\u79cd\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u8fd0\u7528TDR\u6d4b\u91cf\u7684\u7279\u6027\u963b\u6297\u503c<\/p>\n<p>\u76f8\u8f83\u4e0b\u300c\u7535\u6c14\u8bbe\u5907\u957f\u77ed\u300d\u4ea6\u5373330-152=178mm\u51e0\u4e4e\u6210\u4e00\u5b9a\u503c\u3002\u7531\u4ee5\u4e0a\u7ed3\u679c\u53d1\u751f\u4ee5\u4e0b2\u4e2a\u7591\u60d1\uff1a<\/p>\n<p>(1)\u3002\u4e00\u822c\u90fd\u89c9\u5f97\u300c\u7535\u6c14\u8bbe\u5907\u957f\u77ed\u300d\u4e0e\u300c\u7269\u7406\u5b66\u957f\u77ed\u300d\uff0c\u4f46\u662f\u8def\u7ebf\u56fe\u6848\u8bbe\u8ba1\u5f2f\u6298\u9891\u6b21\u4ea6\u5373\u51f8\u51f9\u9891\u6b21\u4e0e\u957f\u77ed\u7684\u5173\u8054\u4e3a\u4ec0\u4e48?<\/p>\n<p>(2)\u3002\u534a\u5bfc\u4f53\u6750\u6599\u751f\u4ea7\u5546\u5bf9\u7535\u963b\u503cZo 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