{"id":2465,"date":"2009-08-29T15:01:20","date_gmt":"2009-08-29T07:01:20","guid":{"rendered":"http:\/\/highscope.ch.ntu.edu.tw\/wordpress\/?p=2465"},"modified":"2021-10-06T16:47:33","modified_gmt":"2021-10-06T08:47:33","slug":"%e7%84%a1%e7%b7%9a%e9%9b%bb%ef%bc%88radio-waves%ef%bc%89","status":"publish","type":"post","link":"http:\/\/localhost\/%e7%84%a1%e7%b7%9a%e9%9b%bb%ef%bc%88radio-waves%ef%bc%89\/","title":{"rendered":"\u7121\u7dda\u96fb\uff08Radio Waves\uff09"},"content":{"rendered":"<div class=\"pf-content\"><p><span style=\"color: #ff6600;\"><strong>\u7121\u7dda\u96fb\uff08Radio Waves\uff09 <\/span><br \/>\n<span style=\"color: #008000;\">\u53f0\u4e2d\u7e23\u7acb\u4e2d\u6e2f\u9ad8\u7d1a\u4e2d\u5b78\u7269\u7406\u79d1\u738b\u5c0a\u4fe1\u8001\u5e2b\/\u570b\u7acb\u5f70\u5316\u5e2b\u7bc4\u5927\u5b78\u7269\u7406\u5b78\u7cfb\u6d2a\u9023\u8f1d\u6559\u6388\u8cac\u4efb\u7de8\u8f2f <\/span><\/strong><\/p>\n<p>\u6240\u8b02\u7121\u7dda\u96fb\u662f\u6307\u5728\u96fb\u78c1\u6ce2\u4e2d\uff0c\u6ce2\u9577\u6bd4\u5fae\u6ce2\u66f4\u9577\u7684\u96fb\u78c1\u6ce2\uff0c\u6ce2\u9577\u7d04\u5728100 \u516c\u5c3a\u523010-4 \u516c\u5c3a\uff0c\u5c0d\u61c9\u983b\u7387\u7d04\u70ba3 MHz\uff5e300 GHz\u3002\u56e0\u70ba\u7121\u7dda\u96fb\u6ce2\u7684\u6ce2\u9577\u5f88\u9577\uff0c\u9047\u5230\u969c\u7919\u7269\u5bb9\u6613\u7e5e\u5c04\uff0c\u800c\u4e14\u5927\u6c23\u5c64\u4e2d\u7684\u96fb\u96e2\u5c64\u53ef\u4ee5\u5e6b\u52a9\u53cd\u5c04\uff0c\u56e0\u6b64\u5728\u61c9\u7528\u4e0a\u5e38\u88ab\u62ff\u4f86\u50b3\u905e\u8a0a\u865f\u3002<\/p>\n<p>\u65e5\u5e38\u751f\u6d3b\u4e2d\u5e38\u7528\u7684\u7121\u7dda\u96fb\u6ce2\u6709\u8abf\u5e45(Amplitude modulation\uff0cAM)\u8207\u8abf\u983b(Frequency modulation\uff0cFM)\u5169\u7a2e\uff0c\u5176\u4e2d\u8abf\u983b\u56e0\u70ba\u8f03\u4e0d\u5bb9\u6613\u5230\u5730\u5f62\u8207\u74b0\u5883\u5f71\u97ff\u800c\u7522\u751f\u96dc\u8a0a\uff0c\u56e0\u6b64\u8072\u97f3\u54c1\u8cea\u6bd4\u8f03\u597d\u3002\u96f7\u9054(Radio Detection And Ranging\uff0cRadar)\u662f\u5229\u7528\u7269\u9ad4\u53cd\u5c04\u7121\u7dda\u96fb\u6ce2\u4f86\u5075\u6e2c\u8ddd\u96e2\u7684\u5100\u5668\uff0c\u5ee3\u6cdb\u5730\u88ab\u4f7f\u7528\u5728\u822a\u7a7a\u8207\u822a\u6d77\u4e0a\uff0c\u7576\u4f7f\u7528\u7684\u6ce2\u6e90\u70ba\u8072\u97f3\u6642\u7a31\u70ba\u8072\u7d0d(sound navigation and ranging\uff0cSonar)\u3002 \u6700\u8fd1\u5728\u8cc7\u8a0a\u754c\u77ed\u8ddd\u96e2\u8cc7\u8a0a\u50b3\u8f38\u4f7f\u7528\u7684\u7121\u7dda\u901a\u8a0a\u5305\u542b\uff1a\u7121\u7dda\u5340\u57df\u7db2\u8def\uff08Wireless Local Area Network\uff0cWLAN\uff09\u3001Wi-Fi\u8207\u85cd\u82bd(Bluetooth)\u9084\u6709\u624b\u6a5f\u901a\u8a0a\u7684GSM\u8207UMTS\u3002IEEE 802.11\u662f\u76ee\u524dWLAN\u7684\u901a\u8a0a\u5354\u5b9a\uff0c\u5b83\u63a1\u75282 GHz\u62165 GHz\u983b\u7387\u7684\u7121\u7dda\u96fb\u6ce2\uff0c\u8cc7\u6599\u50b3\u8f38\u901f\u7387\u70ba11 Mbps\u621654 Mbps\u3002\u5229\u7528\u9019\u7a2e\u7121\u7dda\u901a\u8a0a\u7684\u6280\u8853\uff0c\u53ef\u4ee5\u505a\u6210\u5c04\u983b\u8fa8\u8b58\u7cfb\u7d71(Radio Frequency Identification\uff0cRFID)\uff0c\u76ee\u524d\u53f0\u5317\u6377\u904b\u7684\u60a0\u904a\u5361\u5c31\u662f\u4e00\u7a2e\u662f\u5c04\u983b\u8fa8\u8b58\u7cfb\u7d71\u3002 <\/p>\n<p>\u7121\u7dda\u96fb\u6ce2\u5305\u542b\u7684\u6ce2\u6bb5\u5f88\u5ee3\uff0c\u751a\u81f3\u6709\u4e9b\u9818\u57df\u628a\u5fae\u6ce2\u4e5f\u5305\u542b\u9032\u7121\u7dda\u96fb\u6ce2\u5167\uff0c\u4f46\u4e00\u822c\u800c\u8a00\uff0c\u5982\u679c\u628a\u5b83\u5206\u6210\u4e03\u500b\u6ce2\u6bb5\uff1a 1.\u9577\u6ce2(Longwave AM Radio\uff0cLF)\uff1a\u983b\u7387\u70ba148.5 &#8211; 283.5 kHz\u3002 2.\u4e2d\u6ce2(Mediumwave AM Radio\uff0cMF)\uff1a\u983b\u7387\u70ba530 kHz &#8211; 1710 kHz\u3002 3.\u77ed\u6ce2(Shortwave AM Radio\uff0cHF)\uff1a\u983b\u7387\u70ba3 MHz &#8211; 30 MHz\u3002 4.\u6975\u9ad8\u983b(TV Band I Channels 2 \u2013 6\uff0cVHF)\uff1a\u983b\u7387\u70ba54 MHz &#8211; 88 MHz\u3002 5.\u6975\u9ad8\u983bII(FM Radio Band II\uff0cVHF)\uff1a\u983b\u7387\u70ba88 MHz &#8211; 108 MHz\u3002 6.\u6975\u9ad8\u983bIII(TV Band III Channels 7 \u2013 13\uff0cVHF)\uff1a\u983b\u7387\u70ba174 MHz &#8211; 216 MHz\u3002 7.\u6975\u9ad8\u983bIV(TV Bands IV &amp; V Channels 14 \u2013 69\uff0cUHF) \uff1a\u983b\u7387\u70ba470 MHz &#8211; 806 MHz\u3002 \u7121\u7dda\u96fb\u901a\u8a0a\u662f\u4e00\u9805\u5177\u6709\u5438\u5f15\u529b\u7684\u6e9d\u901a\u65b9\u5f0f\uff0c\u6709\u8a31\u591a\u611b\u597d\u8005\u751a\u81f3\u7d44\u6210\u6240\u8b02\u706b\u817f\u65cf(\u5df2\u901a\u904e\u300c\u696d\u9918\u7121\u7dda\u96fb\u4eba\u54e1\u8cc7\u683c\u6e2c\u8a66\u300d\u7684\u7121\u7dda\u96fb\u73a9\u5bb6)\u8207\u9999\u8178\u65cf(\u672a\u901a\u904e\u300c\u696d\u9918\u7121\u7dda\u96fb\u4eba\u54e1\u8cc7\u683c\u6e2c\u8a66\u300d\u7684\u7121\u7dda\u96fb\u73a9\u5bb6)\uff0c\u81ea\u6210\u4e00\u500b\u793e\u7fa4\uff0c\u5f62\u6210\u4e00\u7a2e\u5229\u7528\u7121\u7dda\u96fb\u901a\u8a0a\u7684\u6b21\u6587\u5316\u3002 <\/p>\n<p><strong>\u53c3\u8003\u8cc7\u6599:<\/strong><br \/>\n1.<a href=\" http:\/\/en.wikipedia.org\/wiki\/Radio\" target=\"_blank\"> http:\/\/en.wikipedia.org\/wiki\/Radio<\/a><br \/>\n2. <a href=\"http:\/\/en.wikipedia.org\/wiki\/Radio_waves \" target=\"_blank\">http:\/\/en.wikipedia.org\/wiki\/Radio_waves<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>\u7121\u7dda\u96fb\uff08Radio Waves\uff09 \u53f0\u4e2d\u7e23\u7acb\u4e2d\u6e2f\u9ad8\u7d1a\u4e2d\u5b78\u7269\u7406\u79d1\u738b\u5c0a\u4fe1\u8001\u5e2b\/\u570b\u7acb\u5f70\u5316\u5e2b\u7bc4\u5927\u5b78\u7269\u7406\u5b78\u7cfb\u6d2a\u9023\u8f1d\u6559\u6388\u8cac\u4efb&hellip;<\/p>\n","protected":false},"author":50,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[107,27,31],"tags":[1910,11062],"class_list":["post-2465","post","type-post","status-publish","format-standard","hentry","category-physics00","category-physics06","category-physics06-04","tag-1910","tag-11062","loop-entry","cat-107","cat-27","cat-31","no-thumbnail"],"views":12451,"_links":{"self":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/2465","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/users\/50"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/comments?post=2465"}],"version-history":[{"count":1,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/2465\/revisions"}],"predecessor-version":[{"id":90465,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/posts\/2465\/revisions\/90465"}],"wp:attachment":[{"href":"http:\/\/localhost\/wp-json\/wp\/v2\/media?parent=2465"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/categories?post=2465"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost\/wp-json\/wp\/v2\/tags?post=2465"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}