{"id":1959,"date":"2018-12-28T07:34:09","date_gmt":"2018-12-28T07:34:09","guid":{"rendered":""},"modified":"2018-12-28T15:34:50","modified_gmt":"2018-12-28T07:34:50","slug":"%e5%bc%80%e5%85%b3%e7%94%b5%e6%ba%90%e7%a8%b3%e5%ae%9a%e6%80%a7%e6%b5%8b%e8%af%95+%e5%bc%80%e5%85%b3%e7%94%b5%e6%ba%90%e7%a8%b3%e5%ae%9a%e6%80%a7","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1959","title":{"rendered":"\u5f00\u5173\u7535\u6e90\u7a33\u5b9a\u6027\u6d4b\u8bd5 \u5f00\u5173\u7535\u6e90\u7a33\u5b9a\u6027"},"content":{"rendered":"
\u968f\u7740<\/span>\u7535\u5b50\uff0c\u81ea\u63a7\uff0c\u822a\u5929\uff0c\u901a\u8baf\uff0c\u533b\u7597\u5668\u68b0\u7b49\u6280\u672f\u4e0d\u65ad\u5411\u6df1\u5ea6\u548c\u5e7f\u5ea6\u7684\u53d1\u5c55\uff0c\u52bf\u5fc5\u8981\u6c42\u4e3a\u5176\u4f9b\u7535\u7684<\/span>\u7535\u6e90\u8981\u6709\u66f4\u9ad8\u7684\u7a33\u5b9a\u6027\uff0c\u5373\u4e0d\u4ec5\u8981\u6709\u597d\u7684\u7ebf\u6027\u8c03\u8282\u7387\u3001\u8d1f\u8f7d\u8c03\u8282\u7387\u8fd8\u8981\u6709\u5feb\u901f\u7684\u52a8\u6001\u8d1f\u8f7d\u54cd\u5e94\u3002\u800c\u8fd9\u4e9b\u56e0\u7d20\u90fd\u548c\u63a7\u5236\u73af\u8def\u6709\u5173\uff0c\u63a7\u5236\u73af\u8def\u4e00\u822c\u5de5\u4f5c\u5728\u8d1f\u53cd\u9988\u72b6\u6001\uff0c\u79f0\u4e4b\u4e3a\u7535\u538b\u8d1f\u53cd\u9988\u3002\u5982\u679c\u53d8\u6362\u5668\u4e2d\u6ca1\u6709\u7528\u5230\u53cd\u9988\u63a7\u5236\u73af\u8def\uff08\u5373\u4e0b\u56fe1\u4e2dH\u90e8\u5206\uff09\uff0c\u5176\u4f20\u9012\u51fd\u6570\u4e00\u822c\u4e3a \u5176\u4e2dG\u4e3a\u8f93\u5165\u6ee4\u6ce2\u3001\u529f\u7387\u53d8\u6362\u3001\u6574\u6d41\u6ee4\u6ce2\u90e8\u5206\u7b49\u56e0\u6570\u7684\u4e58\u79ef\uff08\u56e0\u4e3a\u5176\u4e3a\u7ea7\u8054\u7684\u5f62\u5f0f\uff0c\u6240\u4ee5\u672c\u6587\u4e2d\u4ee5\u603b\u7684\u4e58\u79ef\u56e0\u5b50G\u6765\u8868\u793a\uff09\uff0c\u53ef\u4ee5\u770b\u51fa\u8f93\u51fa\u968f\u7740\u8f93\u5165\u7684\u53d8\u5316\u800c\u6210\u7ebf\u6027\u7684\u53d8\u5316\uff0c\u4f46\u662f\u7531\u4e8e\u6574\u6d41\u3001\u6ee4\u6ce2\u7f51\u7edc\u5728\u6574\u4e2a\u65f6\u57df\u7684\u975e\u7ebf\u6027\uff0c\u5b9e\u9645\u4e0a\u8fd9\u79cd\u53d8\u5316\u5e94\u8be5\u662f\u8fd1\u4f3c\u4e8e\u7ebf\u6027\uff0c\u6240\u4ee5\u5f53\u8f93\u5165\u7535\u538b\u6539\u53d8\u7684\u65f6\u5019\u5e76\u4e0d\u80fd\u5f88\u597d\u7684\u8d77\u5230\u7a33\u538b\u7684\u4f5c\u7528\uff1b\u5982\u679c\u53cd\u9988\u73af\u8def\u8bbe\u8ba1\u7684\u4e0d\u597d\uff0c\u5bf9\u4e8e\u8d1f\u8f7d\u7684\u77ac\u6001\u6539\u53d8\uff0c\u73af\u8def\u4e0d\u80fd\u505a\u51fa\u53ca\u65f6\u6070\u5f53\u7684\u8c03\u6574\uff0c\u90a3\u4e48\u8f93\u51fa\u7535\u538b\u77ac\u95f4\u4f1a\u504f\u9ad8\u6216\u8005\u504f\u4f4e\uff0c\u751a\u81f3\u6709\u53ef\u80fd\u9020\u6210\u7535\u6e90\u7cfb\u7edf\u7684\u632f\u8361\uff0c\u5bf9\u4e0b\u4e00\u7ea7\u6784\u6210\u635f\u574f\u3002\u6b64\u65f6\u80fd\u591f\u5bf9\u73af\u8def\u6d4b\u91cf\u5c31\u663e\u5f97\u5f88\u91cd\u8981\u4e86\uff0c\u90a3\u4e48\u73af\u8def\u90e8\u5206\u53c8\u662f\u600e\u6837\u5f71\u54cd\u6574\u4e2a\u56de\u8def\u7684\u5462\uff1f\u53c2\u8003\u91d1\u5347\u9633\u516c\u53f8\u5bbd\u538b\u6216\u8005AC-DC\u7cfb\u5217\u4ea7\u54c1\uff0c\u6b64\u65f6\u4e0b\u56fe\u8868\u793a\u7684\u662f\u53cd\u9988\u73af\u8def\u63a7\u5236\u90e8\u5206\u4e2d\u7684\u8fd0\u653e\u7684\u73af\u589e\u76ca\u6a21\u578b\uff0c\u5176\u4f20\u9012\u51fd\u6570\u4e3a<\/span> \u968f\u7740 \u7535\u5b50 \uff0c\u81ea\u63a7\uff0c\u822a\u5929\uff0c\u901a\u8baf\uff0c\u533b\u7597\u5668\u68b0\u7b49\u6280\u672f\u4e0d\u65ad\u5411\u6df1\u5ea6\u548c\u5e7f\u5ea6\u7684\u53d1\u5c55\uff0c\u52bf\u5fc5\u8981\u6c42\u4e3a\u5176\u4f9b\u7535\u7684 \u7535\u6e90 \u8981\u6709\u66f4\u9ad8\u7684\u7a33\u5b9a\u6027\uff0c\u5373\u4e0d\u4ec5\u8981\u6709\u597d\u7684\u7ebf\u6027\u8c03\u8282\u7387\u3001\u8d1f\u8f7d\u8c03\u8282\u7387\u8fd8\u8981\u6709\u5feb\u901f\u7684\u52a8\u6001\u8d1f<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[19],"tags":[],"_links":{"self":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1959"}],"collection":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1959"}],"version-history":[{"count":0,"href":"http:\/\/www.szryc.com\/index.php?rest_route=\/wp\/v2\/posts\/1959\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1959"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1959"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.szryc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1959"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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\n\u5176\u4e2dG\uff1a\u5f00\u73af\u589e\u76ca\uff0cH\uff1a\u53cd\u9988\u7cfb\u6570\uff0cGH\uff1a\u73af\u589e\u76ca\uff08\u53ef\u4ee5\u901a\u8fc7\u56fe1\u4e2d\u63a8\u5bfc\u770b\u51fa\uff09<\/span>
\n <\/span>
\n \u56fe 1.Feed back<\/span>
\n
\n
\nPSM1700 PSM1735 PSM2200 FRA5087 \u9891\u7387\u54cd\u5e94\u5206\u6790\u4eea<\/span>
\n <\/span>
\n\u4e00\u3001<\/span>\u73af\u589e\u76ca\u7a33\u5b9a\u7684\u6807\u51c6\uff1a<\/span>
\n
\n\u7531\u4f20\u9012\u51fd\u6570<\/span>
\n
\n\u6709\uff0c\u56e0\u4e3a\u653e\u5927\u5668\u7684\u5f00\u73af\u589e\u76caG\u662f\u9891\u7387\u7684\u51fd\u6570\uff0c\u4f1a\u968f\u7740\u9891\u7387\u7684\u589e\u52a0\u800c\u51cf\u5c0f\uff0c\u540c\u65f6\u4e5f\u548c\u653e\u5927\u5668\u7684\u76f8\u4f4d\u6709\u5173\uff0c\u5f53GH= -1\uff0c\u5219\u5176\u4f20\u9012\u51fd\u6570\u7684\u503c\u4e3a∞\uff0c\u5373\u589e\u76ca\u662f\u65e0\u7a77\u5927\u7684\uff0c\u53ef\u4ee5\u8ba4\u4e3a\u4efb\u610f\u5c0f\u7684\u8f93\u5165\u6270\u52a8\u90fd\u80fd\u5f15\u8d77\u8f93\u51fa\u7684\u65e0\u7a77\u5927\uff0c\u5982\u679c\u8fd9\u79cd\u8f93\u51fa\u65e0\u7a77\u5927\u7684\u4fe1\u53f7\u518d\u53cd\u9988\u5230\u529f\u7387\u53d8\u6362\u73af\u8282\uff0c\u52bf\u5fc5\u4f1a\u9020\u6210\u6700\u540e\u8f93\u51fa\u7684\u632f\u8361\uff0c\u6574\u4e2a\u7cfb\u7edf\u56e0\u800c\u4e0d\u518d\u7a33\u538b\u3002\u6240\u4ee5\u8bf4\u53ef\u4ee5\u901a\u8fc7\u5206\u6790GH\u7684\u589e\u76ca\u548c\u76f8\u4f4d\u6765\u5224\u65ad\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u3002<\/span>
\n
\n\u53c8\u56e0\u4e3a\u5f53GH= -1\u65f6\u662f\u632f\u8361\u7684\uff0c\u6240\u4ee5\u6709\u76f8\u79fb∠GH\u662f180°\uff08\u56e0\u4e3a\u8d1f\u53cd\u9988\u672c\u8eab\u5c31\u6709180°\u7684\u76f8\u79fb\uff09\uff0c\u56de\u8def\u589e\u76ca|GH|=1\uff080dB\uff09\u3002<\/span>
\n\u6240\u4ee5\u8981\u4f7f\u8fd0\u653e\u7a33\u5b9a\u9700\u8981\u6ee1\u8db3\u4ee5\u4e0b\u6761\u4ef6\uff1a1.\u76f8\u4f4d\u6761\u4ef6\u5c31\u662f\u8981\u5176\u76f8\u79fb\u8981\u5c0f\u4e8e180°\uff0c\u5373\u8981\u670945\u5ea6\u4ee5\u4e0a\u7684\u88d5\u91cf\uff1b2.\u8fd8\u8981\u6ee1\u8db3\u589e\u76ca\u6761\u4ef6\u5373\u8981\u670912dB\u4ee5\u4e0a\u7684\u88d5\u91cf\uff1b3.\u7a7f\u8d8a\u9891\u7387\u630920dB\/Dec\u95ed\u5408\u3002\u76f8\u5173\u89e3\u91ca\u4e0b\u6587\u7ed9\u51fa\u3002<\/span>
\n
\n\u4e8c\u3001Bode\u56fe\u7684\u57fa\u7840\uff1a<\/span>
\n
\n \u7531\u4e0a\u6587\u77e5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u73af\u589e\u76caGH\u7684\u9891\u7387\u7279\u6027\u6765\u5224\u65ad\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\uff0c\u800c\u56de\u8def\u589e\u76ca|GH|\u4ee5\u53ca\u56de\u8def\u76f8\u4f4d\u5dee∠GH\u7684\u9891\u7387\u7279\u6027\u53ef\u4ee5\u7528Bode\u56fe(\u89c1\u56fe2)\u6765\u8868\u793a\uff0c\u5e76\u4e14\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u53ef\u4ee5\u901a\u8fc7Bode\u56fe\u4e2d\u7684\u76f8\u4f4d\u88d5\u91cf(phase margin) ,\u589e\u76ca\u88d5\u91cf(gain margin)\uff0c\u7a7f\u8d8a\u9891\u7387(crossover frequency)\u6765\u8861\u91cf\u3002\u5176\u4e2d<\/span>
\n \u76f8\u4f4d\u88d5\u91cf(phase margin)\u662f\u6307\uff1a\u5728\u9891\u7387-\u76f8\u4f4d\u66f2\u7ebf\u4e0a\uff0c\u5f53\u73af\u8def\u589e\u76ca\u4e3a\u5355\u4f4d\u589e\u76ca\u65f6\u5b9e\u9645\u76f8\u4f4d\u5ef6\u8fdf\u4e0e360deg \u95f4\u7684\u5dee\u503c\uff0c\u4ee5\u5ea6(deg)\u4e3a\u5355\u4f4d\u8868\u793a\uff0c\u89c1\u56fe2\u3002<\/span>
\n \u589e\u76ca\u88d5\u91cf(gain margin)\u662f\u6307: \u5728\u9891\u7387-\u589e\u76ca\u66f2\u7ebf\u4e0a\uff0c\u5f53\u603b\u76f8\u4f4d\u5ef6\u8fdf\u4e3a360deg \u65f6\uff0c\u589e\u76ca\u4f4e\u4e8e\u5355\u4f4d\u589e\u76ca\u7684\u91cf\uff0c\u4ee5\u5206\u8d1d(dB)\u4e3a\u5355\u4f4d\u6765\u8868\u793a\uff0c\u89c1\u56fe2\u3002<\/span>
\n \u7a7f\u8d8a\u9891\u7387(crossover frequency)\u4e5f\u6709\u8d44\u6599\u79f0\u4e4b\u4e3a\u9891\u5e26\u5bbd\u5ea6\u7b49\u662f\u6307\uff1a\u5728\u9891\u7387-\u589e\u76ca\u66f2\u7ebf\u4e0a\uff0c\u589e\u76ca\u4e3a\u96f6\u65f6\u6240\u5bf9\u5e94\u7684\u9891\u7387\u503c\uff0c\u89c1\u56fe2\u3002 <\/span>
\n
\n <\/span>
\n \u56fe 2 Bode plot• Gain margin• Phase margin<\/span>
\n
\n \u76f8\u4f4d\u88d5\u91cf(phase margin)\u7684\u4f5c\u7528,\u662f\u786e\u4fdd\u5728\u4e00\u5b9a\u7684\u6761\u4ef6\u4e0b\uff08\u5305\u62ec<\/span>\u5143\u5668\u4ef6\u7684\u8bef\u5dee\u3001\u8f93\u5165\u7535\u538b\u53d8\u5316\u3001\u8d1f\u8f7d\u53d8\u5316\u3001\u6e29\u5347\u7b49\uff09\u7cfb\u7edf\u90fd\u80fd\u591f\u7a33\u5b9a,\u4f7f\u7528\u5728\u6807\u79f0\u8f93\u5165\u989d\u5b9a\u8d1f\u8f7d\u5ba4\u6e29\u4e0b,\u8981\u670945\u5ea6\u7684\u88d5\u91cf\uff1b\u5982\u679c\u8f93\u5165\u7535\u538b\u3001\u8d1f\u8f7d\u3001\u6e29\u5ea6\u53d8\u5316\u8303\u56f4\u975e\u5e38\u5927, \u76f8\u4f4d\u88d5\u91cf\u4e0d\u5e94\u5c0f\u4e8e30\u5ea6\u3002<\/span>
\n\u589e\u76ca\u88d5\u91cf(gain margin)\u4e3a\u4e86\u4e0d\u63a5\u8fd1\u4e0d\u7a33\u5b9a\u70b9\uff0c\u4e00\u822c\u8ba4\u4e3a12dB\u4ee5\u4e0a\u662f\u5fc5\u8981\u7684\u3002<\/span>
\n \u7a7f\u8d8a\u9891\u7387(crossover frequency)\u9891\u5e26\u5bbd\u5ea6\u7684\u5927\u5c0f\u53ef\u4ee5\u53cd\u6620\u63a7\u5236\u73af\u8def\u54cd\u5e94\u7684\u5feb\u6162\u3002\u4e00\u822c\u8ba4\u4e3a\u5e26\u5bbd\u8d8a\u5bbd\uff0c\u5176\u5bf9\u8d1f\u8f7d\u52a8\u6001\u54cd\u5e94\u7684\u6291\u5236\u80fd\u529b\u5c31\u8d8a\u597d\uff0c\u8fc7\u51b2\u3001\u6b20\u51b2\u8d8a\u5c0f\uff0c\u6062\u590d\u65f6\u95f4\u4e5f\u5c31\u8d8a\u5feb\uff0c\u7cfb\u7edf\u4ece\u800c\u53ef\u4ee5\u66f4\u7a33\u5b9a\u3002\u4f46\u662f\u7531\u4e8e\u53d7\u5230\u53f3\u534a\u5e73\u9762\u96f6\u70b9\u7684\u5f71\u54cd\uff0c\u4ee5\u53ca\u539f\u6750\u6599\u3001\u8fd0\u653e\u7684\u5e26\u5bbd\u4e0d\u53ef\u80fd\u65e0\u7a77\u5927\u7b49\u7efc\u5408\u56e0\u7d20\u7684\u9650\u5236\uff0c\u7535\u6e90\u7684\u5e26\u5bbd\u4e5f\u4e0d\u80fd\u65e0\u9650\u5236\u63d0\u9ad8\uff0c\u4e00\u822c\u53d6\u5f00\u5173\u9891\u7387\u76841\/20~1\/6\u3002<\/span>
\n
\n\u4e09\u3001\u73af\u8def\u7684\u6d4b\u8bd5<\/span>
\n
\n \u5bf9\u73af\u8def\u7684\u589e\u76ca\u548c\u76f8\u4f4d\u7684\u6d4b\u91cf\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u5e38\u53ef\u5229\u7528\u9891\u7387\u54cd\u5e94\u5206\u6790\u4eea(FRA)\u6216\u589e\u76ca-\u76f8\u4f4d\u5206\u6790\u4eea\u8fdb\u884c\u6d4b\u91cf\u3002\u8fd9\u4e9b\u4eea\u5668\u662f\u901a\u8fc7\u5bf9\u91c7\u6837\u83b7\u5f97\u7684\u6a21\u62df\u4fe1\u53f7\u8fdb\u884c\u9884\u5904\u7406\uff0c\u7136\u540e\u901a\u8fc7A\/D\u8f6c\u6362\uff0c\u518d\u5229\u7528DFT\uff08\u79bb\u6563\u5085\u91cc\u53f6\u53d8\u6362\uff09\u8fd0\u7b97\u6c42\u5f97\u589e\u76ca\u548c\u76f8\u4f4d\uff0c\u6700\u540e\u7528\u66f2\u7ebf\uff08Bode plot\uff09\u8868\u793a\u51fa\u6765\u3002<\/span>
\n \u672c\u6587\u5c06\u4ee5\u682a\u5f0f\u4f1a\u793eNF\u516c\u53f8\u7684\u9891\u7387\u54cd\u5e94\u5206\u6790\u4eea(FRA5087)\u6765\u505a\u5206\u6790\uff0c\u4e3b\u8981\u6309\u7167\u4e0b\u8fb9\u7684\u63a5\u7ebf\u56fe\u6765\u8fdb\u884c\uff0c\u6ce8\u610f\u73af\u8282\u662f\u6ce8\u5165\u7535\u963b\u7684\u4f4d\u7f6e\uff0c\u4ee5\u53ca\u5927\u5c0f\uff0c\u4e3a\u4e86\u51cf\u5c0f\u6d4b\u91cf\u8bef\u5dee\uff0c\u5b9e\u9a8c\u4e00\u822c\u9009\u53d650~100Ω\u7684\u7535\u963b\uff1b\u6709\u5173\u6270\u52a8\u4fe1\u53f7\u7684\u5927\u5c0f\u6211\u4eec\u53ef\u4ee5\u5728\u6d4b\u8bd5\u7684\u8fc7\u7a0b\u4e2d\u901a\u8fc7\u793a\u6ce2\u5668\u6765\u8bfb\u51fa\uff0c\u4e5f\u53ef\u4ee5\u5229\u7528FRA\u7684\u632f\u5e45\u538b\u7f29\uff08Amplitude compression \uff09\u529f\u80fd\u6765\u8bbe\u7f6e\uff0c\u4e0d\u8fc7\u8981\u6c42\u6270\u52a8\u7684\u5e45\u5ea6\u4e0d\u80fd\u8d85\u8fc7\u8f93\u51fa\u7535\u538b\u76845%\u3002\u5426\u5219\u6d4b\u51fa\u6765\u7684\u7ed3\u679c\u662f\u4e0d\u51c6\u786e\u7684\u3002<\/span>
\n
\n
\n
\n
\n\u56fe 3 FRA\u6d4b\u91cf\u65f6\u6ce8\u5165\u7535\u963b\u7684\u4f4d\u7f6e\u53ca\u63a5\u7ebf<\/span>
\n
\n\u56db\u3001\u5f00\u5173\u7535\u6e90\u7a33\u5b9a\u6027\u6d4b\u8bd5\u4e3e\u4f8b\uff1a<\/span>
\n
\n \u5728\u4e86\u89e3\u5f71\u54cd\u4ea7\u54c1\u7a33\u5b9a\u6027\u7684\u56e0\u7d20\u548c\u5224\u5b9a\u51c6\u5219\u4ee5\u53ca\u600e\u6837\u6765\u68c0\u6d4b\u4ea7\u54c1\u540e\uff0c\u5c31\u53ef\u4ee5\u5bf9\u6240\u6d4b\u7684\u4ea7\u54c1\u7684\u7ed3\u679c\u8fdb\u884c\u5206\u6790\u4e86\uff0c\u4e0b\u9762\u5c31\u4ee5\u91d1\u5347\u9633\u516c\u53f8\u5bbd\u538b\u7cfb\u5217\u7684\u4e00\u6b3e\u4ea7\u54c1\u6765\u505a\u5b9e\u9a8c\uff0c\u5b9e\u9645\u63a5\u7ebf\u90e8\u5206\u89c1\u56fe3\uff0c\u6d4b\u8bd5\u7ed3\u679c\u5982\u56fe4\u3002<\/span>
\n
\n\u56fe 4 Magnitude and phase of loop gain for nominal input voltage at full rated power and 25\u2103<\/span>
\n
\n \u5728\u8fd9\u4e00\u4f8b\u5b50\u4e2d\uff0c\u4ece\u4e0a\u56fe\u53ef\u4ee5\u770b\u51fa\u5176\u589e\u76ca\u88d5\u91cf\u662f-39.3dB\uff0c\u76f8\u4f4d\u88d5\u91cf\u662f87.8deg,\u5e26\u5bbd\u662f315.5Hz\uff0c\u5e76\u4e14\u57280dB \u4ee5\u4e0a\u589e\u76ca\u662f\u6309-20dB\/decade\u8870\u51cf\uff0c\u5bf9\u7167\u4e0a\u9762\u7684\u6807\u51c6\u521d\u6b65\u5224\u65ad\u7cfb\u7edf\u662f\u7a33\u5b9a\u7684\uff0c\u4f46\u662f87.8deg\u7684\u76f8\u4f4d\u88d5\u91cf\u5176\u52a8\u6001\u54cd\u5e94\u662f\u6b20\u963b\u5c3c\u7684\uff0c\u5176\u5b9e\u53ef\u4ee5\u901a\u8fc7\u5bf9\u8bef\u5dee\u653e\u5927\u5668\u8865\u507f\u7f51\u7edc\u5728\u7a0d\u4f4e\u7684\u9891\u7387\u4e0b\u6ed1\u843d\uff08roll off\uff09\u6765\u5b9e\u73b0\u3002\u5728\u4fdd\u8bc1\u76f8\u4f4d\u88d5\u91cf\u7684\u524d\u63d0\u4e0b\uff0c\u57280dB \u4ee5\u4e0b\u589e\u76ca\u662f\u6309-40dB\/decade\u8870\u51cf\uff0c\u4ece\u800c\u66f4\u6709\u5229\u4e8e\u6291\u5236\u9ad8\u9891\u5e72\u6270\uff0c\u4f7f\u5176\u8fbe\u5230\u6700\u4f73\u54cd\u5e94\uff1b<\/span>
\n
\n 0dB\u4ea4\u70b9\u5bf9\u5e94\u7684\u9891\u7387\u4e3a315.5Hz\uff0c\u4ece\u7406\u8bba\u7684\u89d2\u5ea6\u4e0a\u6765\u8bf4\uff0c\u5bf9\u4e8e300KHz\u7684\u5f00\u5173\u9891\u7387\uff0c\u5b9e\u6d4b\u7684\u5e26\u5bbd\u53ef\u80fd\u5bfc\u81f4\u63a7\u5236\u73af\u7684\u54cd\u5e94\u6709\u4e9b\u6162\uff0c\u4e0d\u5229\u4e8e\u7cfb\u7edf\u7684\u6682\u6001\u7a33\u5b9a\u3002\u66f4\u9ad8\u7684\u5e26\u5bbd\uff0c\u53ef\u4ee5\u4f7f\u66f4\u5c0f\u7684\u8f93\u51fa\u6ee4\u6ce2\u7535\u5bb9\u4fbf\u53ef\u4ee5\u4ea7\u751f\u8f83\u5c0f\u7684\u7eb9\u6ce2\u7535\u538b\uff0c\u8fd9\u6837\u4e5f\u53ef\u4ee5\u51cf\u5c11\u539f\u6750\u6599\u7684\u4f7f\u7528\u548c\u6a21\u5757\u7535\u6e90\u7684\u4f53\u79ef\uff0c\u4ece\u800c\u4f7f\u6a21\u5757\u7535\u6e90\u53d8\u5f97\u66f4\u8282\u80fd\u3002\u8003\u8651\u5230\u975e\u5e38\u4fdd\u5b88\u7684\u589e\u76ca\u548c\u76f8\u4f4d\u88d5\u91cf\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u5bf9\u8bef\u5dee\u653e\u5927\u5668\u7684\u8865\u507f\u73af\u8282\u8fdb\u884c\u4e00\u4e9b\u5c0f\u7684\u6539\u52a8\uff0c\u5408\u7406\u7684\u63d0\u5347\u5e26\u5bbd\uff0c\u4f7f\u7cfb\u7edf\u8fbe\u5230\u66f4\u5feb\u7684\u54cd\u5e94\uff0c\u63d0\u9ad8\u7a33\u5b9a\u6027\u3002<\/span>
\n
\n\u4e94\u3001\u603b\u7ed3\uff1a<\/span>
\n
\n \u672c\u6587\u4ece\u53cd\u9988\u73af\u8def\u6ce8\u5165\u6270\u52a8\u4fe1\u53f7\u7684\u89d2\u5ea6\u6765\u53cd\u6620\u5f00\u5173\u7535\u6e90\u7a33\u5b9a\u6027\uff0c\u7ed9\u51fa\u7a33\u5b9a\u6027\u7684\u6807\u51c6\uff0cBode\u56fe\u7684\u8ba4\u8bc6\uff0cFRA\u7684\u4f7f\u7528\u5305\u62ec\u6270\u52a8\u4fe1\u53f7\u7684\u6ce8\u5165\u3001\u73af\u8def\u7279\u6027\u7684\u6d4b\u91cf\uff0c\u4ee5\u53ca\u5b9e\u9a8c\u7ed3\u679c\u7684\u7b80\u5355\u5206\u6790\uff0c\u6700\u540e\u63d0\u51fa\u9700\u8981\u66f4\u6539\u7684\u5730\u65b9\u3002\u5f53\u7136\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u4e5f\u53ef\u4ee5\u7531\u65f6\u57df\u7684\u65b9\u5f0f\u6765\u505a\u5b9a\u6027\u7684\u5206\u6790\uff0c\u4f46\u662f\u901a\u8fc7\u9891\u7387\u54cd\u5e94\u5206\u6790\u4eea\u5374\u53ef\u4ee5\u5728\u9891\u7387\u57df\u4e0a\u5b9a\u91cf\u7684\u6c42\u51fa\uff0c\u4ece\u800c\u5bf9\u7cfb\u7edf\u7684\u6027\u80fd\u505a\u51fa\u66f4\u76f4\u89c2\u7684\u5224\u65ad\u3002<\/span>
\n
\n
\n\u516d\u3001\u5efa\u8bae\uff1a<\/span>
\n \u6d4b\u91cf\u5f00\u5173\u7535\u6e90\u8d1f\u53cd\u9988\u73af\u8def\u9891\u7387\u54cd\u5e94\uff0c\u5efa\u8bae\u4f7f\u7528\u4e13\u7528\u7684\u9891\u54cd\u5206\u6790\u4eea\u3002\u5982NF FRA5087,N4L PSM1700\uff0cPSM3750\u3002<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"