{"id":16600,"date":"2022-01-19T10:40:38","date_gmt":"2022-01-19T02:40:38","guid":{"rendered":"https:\/\/www.paiqinano.com\/?p=16600"},"modified":"2022-01-17T15:41:09","modified_gmt":"2022-01-17T07:41:09","slug":"%e6%b5%85%e8%b0%88%e5%b0%84%e9%a2%91%e5%b7%a5%e7%a8%8b%e5%b8%88%e5%bf%85%e5%a4%87%e6%b5%8b%e9%87%8f%e6%8a%80%e6%9c%af%e5%9f%ba%e7%a1%80%ef%bc%81","status":"publish","type":"post","link":"https:\/\/www.paiqinano.com\/?p=16600","title":{"rendered":"\u6d45\u8c08\u5c04\u9891\u5de5\u7a0b\u5e08\u5fc5\u5907\u6d4b\u91cf\u6280\u672f\u57fa\u7840\uff01"},"content":{"rendered":"

\n\t\u5f53\u4eca\uff0c\u6839\u636e\u5fae\u6ce2\u5c04\u9891<\/u>\u57fa\u672c\u539f\u7406\u7684\u65e0\u7ebf\u901a\u4fe1<\/u>\u5546\u54c1\u4fef\u62fe\u5373\u662f\uff0c\u5176\u603b\u6570\u7684\u589e\u901f\u4e5f\u5341\u5206\u4ee4\u4eba\u9707\u60ca\u3002<\/p>\n

\n\t\u4ece\u8702\u7a9d\u7535\u8bdd\u548c\u65e0\u7ebf\u7f51\u7edcPDA\uff0c\u5230\u9002\u7528WiFi\u7684\u7b14\u8bb0\u672c\u3001\u624b\u673a\u84dd\u7259<\/u>\u624b\u673a\u8033\u673a\u3001\u5fae\u6ce2\u5c04\u9891\u771f\u5b9e\u8eab\u4efd\u6807\u8bc6\u3001\u65e0\u7ebf\u7f51\u7edc\u533b\u7597\u5668\u68b0\u548cZigbee<\/u>\u611f\u5e94\u5668<\/u>\uff0c\u5fae\u6ce2\u5c04\u9891\u673a\u5668\u8bbe\u5907\u7684\u5e02\u573a\u5bb9\u91cf\u5728\u98de\u5feb\u6269\u5f20\u3002 \u8981\u60f3\u5f00\u5c55\u5168\u65b9\u4f4d\u7684\u751f\u4ea7\u5236\u9020\u68c0\u6d4b<\/u>\u5e76\u63d0\u4f9b\u68c0\u6d4b\u751f\u4ea7\u80fd\u529b\uff0c\u8f6f\u4ef6\u6d4b\u8bd5\u4eec\u52a1\u5fc5\u8981\u4e86\u89e3\u5fae\u6ce2\u5c04\u9891\u57fa\u672c\u6982\u5ff5\uff0c\u6e05\u6670\u68c0\u6d4b\u7684\u5167\u5bb9\uff0c\u5e76\u4f1a\u91c7\u7528\u6700\u5408\u9002 \u7684\u5e94\u7528\u8fdb\u884c\u8fd9\u79cd\u68c0\u67e5\u5de5\u4f5c\u4e2d\u3002<\/p>\n

\n\t\u95ee\u9898\u662f\uff0c\u5927\u90e8\u5206\u4ece\u4e1a\u4f4e\u9891\u7387\u8fd0\u7528\uff08\u8f93\u51fa\u529f\u7387\u57281MHz\u4e0b\u5217\uff09\u7684\u6280\u672f\u5de5\u7a0b\u5e08\u4e0d\u592a\u719f\u9ad8\u9891\u7387\u7684\u8fd0\u7528\u7279\u6027\u3002<\/p>\n

\n\t\u5fae\u6ce2\u5c04\u9891\u4e13\u4e1a\u672f\u8bed\uff1a\u60a8\u52a1\u5fc5\u628a\u63e1\u7684\u201c\u5de5\u4f5c\u4e2d\u8bed\u8a00\u8868\u8fbe\u201d\u5fd8\u8bb0\u5de5\u4f5c\u7535\u538b\uff0c\u5c04\u9891\u5de5\u7a0b\u5e08\u5e38\u89c1\u8f93\u51fa\u529f\u7387<\/p>\n

\n\t\u5c04\u9891\u4fe1\u53f7\u7684\u6297\u538b\u5f3a\u5ea6\u5404\u6709\u4e0d\u540c\u3002\u4f34\u968f\u7740\u6570\u636e\u4fe1\u53f7\u5728\u5c3a\u5ea6\u7a7a\u95f4\u7684\u6563\u64ad\uff0c\u4f01\u4e1a\u8f93\u51fa\u529f\u7387\u5c06\u4f34\u968f\u7740\u95f4\u8ddd\u7684\u5e73\u65b9\u7c73\u6210\u5360\u6bd4\u51cf\u5c11\uff0c\u8f93\u51fa\u529f\u7387\u7684\u8f6c\u53d8\u5e38\u89c1\u58f0\u8d1d\uff08dB\uff09\u6765\u8868\u660e\u3002 \u9009\u7528\u58f0\u8d1d\u5f00\u5c55\u529f\u7387\u6d4b\u91cf\u4e5f\u5927\u5927\u7b80\u5316\u4e86\u6d4b\u7b97\u5168\u8fc7\u7a0b\u3002\u6536\u83b7\u548c\u8017\u635f\u90fd\u6309\u58f0\u8d1d\u4e3a\u4f01\u4e1a\u91c7\u53d6\u52a0\u51cf\u6cd5\u3002\u56e0\u800c\uff0c\u4e58\u9664\u6cd5\u5b9e\u9645\u64cd\u4f5c\u7b80\u5355\u5316\u4e3a\u52a0\u51cf\u6cd5\u5b9e\u9645\u64cd\u4f5c\u3002dB\u7684\u6d41\u4e8e\u5f62\u5f0f\u7406\u89e3\u4e3a\uff1a<\/p>\n

\n\tdB = 10 log (Pout\/Pi<\/u>n)<\/p>\n

\n\t\u58f0\u8d1ddB\u662f\u4e00\u4e2a\u76f8\u5bf9\u6027\u7684\u503c\u3002\u53e6\u4e00\u4e2a\u76f8\u5e94\u7684\u4f01\u4e1a\u662f\u6beb\u74e6\u58f0\u8d1ddBm\uff0c\u5b83\u662f\u76f8\u6bd4\u4e8e1mW\u7684\u80af\u5b9a\u8f93\u51fa\u529f\u7387\u3002<\/p>\n

\n\t\u56fe1\u5f97\u51fa\u4e86dBm\u7684\u503c\u4ee5\u53ca\u5bf9\u5e94\u7684\u6cf0\u5229\u65af\u6570\uff0c\u5728\u5176\u4e2d\u8fd8\u5217\u51fa\u4e86\u624b\u673a\u7684\u8c03\u9891\u53d1\u5c04\u673a\u4fe1\u53f7\u5f3a\u5ea6\u53c2\u7167\u8303\u7574\uff0c\u53ca\u5176\u7075\u5de7\u63a5\u6536\u5668\u80fd\u591f\u68c0\u9a8c\u5230\u7684\u6700\u5c11\u6570\u636e\u4fe1\u53f7\u8f93\u51fa\u529f\u7387\u3002<\/p>\n

\n\t\u56fe2\u5f97\u51fa\u7684\u5f0f\u5b50\u754c\u5b9a\u4e86\u5728\u5e38\u6e29\u4e0b\u5c04\u9891\u4fe1\u53f7\u7684\u57fa\u7840\u7406\u8bba\u70ed\u566a\u58f0\u3002\u56e0\u4e3a\u5c04\u9891\u4fe1\u53f7\u6839\u636e\u6c14\u4f53\u7684\u4f20\u9001\u53ca\u5176\u53d7\u7a7a\u6c14\u8981\u7d20\u548c\u5176\u4ed6\u4fe1\u606f\u7684\u5f71\u54cd\uff0c\u62b5\u8fbe\u63a5\u6536\u5668\u76844g\u4fe1\u53f7\u8109\u51b2\u4fe1\u53f7\u53ef\u4ee5\u4f1a\u6781\u4f4e\u3002<\/p>\n

\n\t\u63a5\u6536\u5668\u7ecf\u5e38\u5fc5\u987b\u68c0\u9a8c\u5c0f\u4e8e0.1pW\u7684\u6570\u636e\u4fe1\u53f7\uff08\u6216\u662f\u5c0f\u4e8e\u5fae\u4f0f\u7684\u6570\u636e\u4fe1\u53f7\u8109\u51b2\u4fe1\u53f7\uff09\u3002 Noise Floor\uff1a\u672c\u5e95\u8f90\u5c04\u566a\u97f3<\/p>\n

\n\t\u7591\u96be\u95ee\u9898\u4e0d\u4f1a\u518d\u662f\u952e\u5165\u7279\u6027\u963b\u6297<\/u>\uff0c\u53cd\u800c\u662f\u540c\u8f74\u7535\u7f06\u7684\u7279\u6027\u963b\u6297\u5931\u914d<\/p>\n

\n\t\u5728\u4f4e\u9891\u7387\u72b6\u51b5\u4e0b\uff0c\u6211\u4eec\u5728\u7535\u6e90\u7535\u8def<\/u>\u4e0a\u4f20\u9001\u5de5\u4f5c\u7535\u538b\u7684\u603b\u4f53\u76ee\u6807\u662f\u5b8c\u6210\u6700\u5c11\u7684\u635f\u8017\u529b\u5ea6\u3002\u5728\u5176\u4e2d\uff0c\u6700\u6709\u6548\u7684\u7535\u6e90\u7535\u8def\u662f\u8f93\u5165\u7535\u963b\u9ad8\u800c\u8f93\u51fa\u963b\u6297\u4f4e\u7684\u7535\u6e90\u7535\u8def\u3002<\/p>\n

\n\t\u9488\u5bf9\u5fae\u6ce2\u5c04\u9891\u8fd0\u7528\uff0c\u7535\u7f06\u7684\u957f\u77ed\u5f88\u6709\u53ef\u80fd\u4ec5\u6709\u5149\u6ce2\u957f\u7684\u56db\u5206\u4e4b\u4e00\uff0c\u5927\u5bb6\u4e00\u5b9a\u628a\u6570\u636e\u4fe1\u53f7\u4f20\u5bfc\u60f3\u6210\u6ce2\u6765\u4e86\u89e3\u3002\u5047\u5982\u6ce2\u88ab\u963b\u9694\uff0c\u4e00\u90e8\u5206\u6ce2\u4e2a\u4f1a\u4ea7\u751f\u53cd\u5c04\u9762\u3002<\/p>\n

\n\t\u5fae\u6ce2\u5c04\u9891\u6570\u636e\u4f20\u8f93\u7684\u76ee\u7684\u4fbf\u662f\u65e0\u8017\u635f\u5730\u5c06\u5168\u90e8\u7684\u8f93\u51fa\u529f\u7387\u53d1\u9001\u7ed9\u8d1f\u8377\u3002\u4e00\u5207\u8f93\u51fa\u529f\u7387\u7684\u53cd\u5c04\u9762\u5c31\u4ee3\u8868\u7740\u53d1\u9001\u7ed9\u8d1f\u8377\u8f93\u51fa\u529f\u7387\u7684\u635f\u5bb3\u3002<\/p>\n

\n\t\u56e0\u800c\uff0c\u5931\u914d\u662f\u4e00\u4e2a\u81f3\u5173\u91cd\u8981\u7684\u4e3b\u8981\u53c2\u6570\u3002\u7535\u8def\u5143\u4ef6\u548c\u540c\u8f74\u7535\u7f06\u4e2d\u95f4\u7684\u4e00\u5207\u7279\u6027\u963b\u6297\u5dee\u522b\u90fd\u662f\u4f1a\u9020\u6210\u53cd\u5c04\u9762\u548c\u8f93\u51fa\u529f\u7387\u8017\u635f\u3002<\/p>\n

\n\t<\/p>\n

\n\t<\/p>\n

\n\t\u5728\u5fae\u6ce2\u5c04\u9891\u5e94\u7528\u4e2d\uff0c\u540c\u8f74\u7535\u7f06\u4e00\u822c\u90fd\u9009\u7528\u540c\u8f74\u7ebf\u7535\u7f06\u7ebf<\/u>\uff0c\u4ed6\u4eec\u76f8\u5bf9\u6027\u4e8e\u7ebf\u8def\u677f<\/u>\u548c\u7ebf\u8def\u677f\u5185\u7684\u5e26\u72b6\u7ebf\u8def\u6765\u5747\u662f\u5185\u90e8\u90e8\u4ef6\u3002\u8fd9\u79cd\u90e8\u4ef6\u53ef\u4ee5\u81ea\u8eab\u7684\u7279\u6027\u7279\u6027\u963b\u6297\u3002<\/p>\n

\n\t\u540c\u8f74\u7535\u7f06\u7684\u7279\u6027\u7279\u6027\u963b\u6297\u4f46\u5173\u952e\u5728\u4e8e\u8f93\u7535\u7ebf\u7684\u51e0\u4f55\u56fe\u5f62\u6784\u9020\u3001\u8f93\u7535\u7ebf\u7684\u7279\u6027\u3001\u5305\u542b\u6216\u9632\u62a4\u6bcd\u7ebf\u7684\u7edd\u7f18\u7269\u3002\u9488\u5bf9\u5fae\u6ce2\u5c04\u9891\u5e94\u7528\u800c\u8a00\uff0c\u540c\u8f74\u7535\u7f06\u7684\u7279\u6027\u7279\u6027\u963b\u6297\u4e0e\u5404\u90e8\u4ef6\u7684\u952e\u5165\u548c\u8f93\u51fa\u963b\u6297\u901a\u5e38\u9009\u62e950Hz\u621675\u6b27\u6bcd\u3002<\/p>\n

\n\t50Hz\u7684\u7279\u6027\u963b\u6297\u91c7\u7528\u4f18\u5316\u5185\u7684\u8f93\u51fa\u529f\u7387\u4f20\u9001\uff0c\u800c75\u6b27\u6bcd\u7684\u7279\u6027\u963b\u6297\u91c7\u7528\u5b8c\u6210\u6700\u5c11\u7684\u635f\u8017\uff0c\u6bd4\u5982\u6709\u7ebf\u7535\u89c6\u7f51\u7cfb\u7edf\u8f6f\u4ef6\u3002\u7edd\u5927\u591a\u6570\u5fae\u6ce2\u5c04\u9891\u65e0\u7ebf\u4f20\u8f93\u7cfb\u7edf\u8f6f\u4ef6\u5168\u662f\u5bf9\u4e8e\u76f8\u540c\u4f20\u9001\u6570\u636e\u800c\u5f00\u5c55\u8bbe\u8ba1\u65b9\u6848\u63d0\u5347\u7684\uff0c\u56e0\u800c\u7279\u6027\u963b\u6297\u5339\u914d\u5168\u662f50\u6b27\u6bcd\u3002 \u4e3a\u4e86\u66f4\u597d\u5730\u51cf\u5c11\u53cd\u5c04\u9762\uff0c\u65e0\u7ebf\u7f51\u7edc\u68c0\u6d4b\u4e0e\u7cbe\u786e\u6d4b\u91cf<\/u>\u8fd0\u7528\u4e2d\u7684\u5fae\u6ce2\u5c04\u9891\u7535\u7f06\u548c\u72ec\u7acb\u662f\u753150\u6b27\u6bcd\u7279\u70b9\u7279\u6027\u963b\u6297\u800c\u5236\u5b9a\u7684\u3002\u53cd\u8fc7\u6765\uff0c\u5f53\u5339\u914d\u7535\u963b\u65f6\uff0c\u5c31\u4fdd\u6301\u4e86\u6700\u597d\u7684\u8f93\u51fa\u529f\u7387\u4f20\u9001\u3002 \u5047\u5982\u67d0\u4e00\u6570\u636e\u4fe1\u53f7\u6ce2\u4ece\u4e00\u79cd\u7279\u70b9\u7279\u6027\u963b\u6297\u4f20\u9001\u5230\u53e6\u4e00\u79cd\u4e0d\u4e00\u6837\u7684\u7279\u6027\u7279\u6027\u963b\u6297\uff0c\u90a3\u9ebc\u4fbf\u4f1a\u9020\u6210\u7684\u4fe1\u53f7\u53cd\u5c04\u9762\u548c\u53cd\u65b9\u5411\u4f20\u9001\u3002<\/p>\n

\n\t\u5047\u5982\u7279\u6027\u963b\u6297\u540c\u6837\uff0c\u5c31\u4e0d\u53ef\u80fd\u4ea7\u751f\u53cd\u5c04\u9762\u3002\u5f53\u56e0\u4e3a\u7279\u6027\u963b\u6297\u4e0d\u63a5\u8fde\u800c\u4ea7\u751f\u6570\u636e\u4fe1\u53f7\u53cd\u5c04\u9762\u65f6\uff0c\u4fbf\u4f1a\u5728\u540c\u8f74\u7535\u7f06\u76842\u4e2a\u65b9\u4f4d\u4e0a\u53d1\u751f\u6570\u636e\u4fe1\u53f7\u6ce2\u7684\u4f20\u9001\u3002<\/p>\n

\n\t\u5728\u8fd9\u91cc2\u4e2a\u6ce2\u76f8\u4f4d\u5dee\u540c\u6837\u7684\u70b9\u4e0a\uff0c\u5c06\u53d1\u751f\u8f83\u5927\u7684\u5de5\u4f5c\u7535\u538b\u5e45\u5ea6\u503cVmax\uff1b\u5728\u4ed6\u4eec\u76f8\u4f4d\u5dee\u76f8\u8ddd180\u5ea6\u7684\u70b9\u4e0a\uff0c\u5c06\u53d1\u751fVmin\u3002<\/p>\n

\n\tVmax\u548cVmin\u7684\u53c2\u8003\u503c\u79f0\u4e4b\u4e3a\u5de5\u4f5c\u7535\u538b\u56de\u635f\uff0c\u5373VSWR\u3002VSWR\u662f\u8003\u91cf\u67d0\u4e00\u5c04\u9891\u8fde\u63a5\u5668<\/u>\u6216\u67d0\u6761\u7535\u7f06\u7684\u7279\u6027\u963b\u6297\u662f\u4e0d\u662f\u8d34\u8fd150Hz\u7684\u4e00\u4e2a\u6307\u6807\u503c\u3002<\/p>\n

\n\t\u56fe3\u5f97\u51fa\u4e86\u7406\u60f3\u5316\u72b6\u51b5\u4e0b\u5168\u914d\u5bf9\uff08\u6c92\u6709\u53cd\u5c04\u9762\uff09\u3001\u7406\u60f3\u5316\u5f15\u8def\uff08100%\u53cd\u5c04\u9762\uff09\uff0c\u53ca\u5176\u504f\u6fc0\u72b6\u51b5\u4e0b\u8fd9\u4e09\u4e2a\u503c\u5173\u7cfb\u3002<\/p>\n

\n\t<\/p>\n

\n\tReturn Loss\uff1a\u56de\u6ce2\u635f\u8017 Reflected Power\uff1a\u53cd\u5c04\u9762\u8f93\u51fa\u529f\u7387<\/p>\n

\n\t\u4e86\u89e3\u628a\u63e1\u65b0\u5f0f\u7684\u5c04\u9891\u8fde\u63a5\u5668\u3001\u7535\u7f06\u548c\u5143\u5668\u4ef6<\/p>\n

\n\t\u5e26BNC\u5c04\u9891\u8fde\u63a5\u5668\u7684\u7535\u7f06\u7ebf\u901a\u5e38\u5728500MHz\u4ee5\u4e0a\u5c31\u9010\u6e10\u635f\u8017\u3002\u5728\u5fae\u6ce2\u5c04\u9891\u884c\u4e1a\uff0c\u7535\u7f06\u7ebf\u901a\u5e38\u914d\u7f6eN\u578b\u5c04\u9891\u8fde\u63a5\u5668\u548cSMA\u5c04\u9891\u8fde\u63a5\u5668\u3002<\/p>\n

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