{"id":44037,"date":"2023-10-03T10:52:50","date_gmt":"2023-10-03T02:52:50","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=44037"},"modified":"2023-10-03T10:52:50","modified_gmt":"2023-10-03T02:52:50","slug":"dxhqdzmk","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/44037.html","title":{"rendered":"DBM\u4fe1\u53f7\u5f3a\u5ea6\u600e\u4e48\u770b"},"content":{"rendered":"

  DBM\uff08Decibel-milliwatts\uff09\u662f\u4e00\u79cd\u8861\u91cf\u4fe1\u53f7\u5f3a\u5ea6\u7684\u5355\u4f4d\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u65e0\u7ebf\u7535\u4fe1\u53f7\u7684\u5927\u5c0f\uff0c\u4ece\u800c\u68c0\u6d4b\u4fe1\u53f7\u7684\u8d28\u91cf\u3002<\/strong>\u5b83\u53ef\u4ee5\u8861\u91cf\u4fe1\u53f7\u7684\u5f3a\u5ea6\uff0c\u5e76\u53ef\u7528\u6765\u68c0\u6d4b\u4fe1\u53f7\u662f\u5426\u6b63\u5e38\u3002\u672c\u6587\u5c06\u63a2\u8ba8DBM\u4fe1\u53f7\u5f3a\u5ea6\u600e\u4e48\u770b\uff0c\u4ee5\u53ca\u5982\u4f55\u4f7f\u7528\u5b83\u6765\u68c0\u6d4b\u4fe1\u53f7\u8d28\u91cf\u3002<\/p>\n

\u4ec0\u4e48\u662fDBM<\/h2>\n

  DBM\uff08Decibel-milliwatts\uff09\u662f\u4e00\u79cd\u8861\u91cf\u4fe1\u53f7\u5f3a\u5ea6\u7684\u5355\u4f4d\uff0c\u5b83\u8868\u793a\u4fe1\u53f7\u7684\u5f3a\u5ea6\u662f\u6beb\u74e6\uff08mW\uff09\u7684\u591a\u5c11\u500d\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u65e0\u7ebf\u7535\u4fe1\u53f7\u7684\u5927\u5c0f\uff0c\u4ece\u800c\u68c0\u6d4b\u4fe1\u53f7\u7684\u8d28\u91cf\u3002<\/p>\n

  DBM\u5355\u4f4d\u7684\u7b26\u53f7\u662fdBm\uff0c\u5176\u4e2ddB\u8868\u793a\u201c\u5206\u8d1d\u201d\uff08decibel\uff09\uff0cm\u8868\u793a\u201c\u6beb\u74e6\u201d\uff08milliwatt\uff09\u3002\u5b83\u662f\u4e00\u79cd\u76f8\u5bf9\u503c\uff0c\u53ef\u4ee5\u7528\u6765\u6bd4\u8f83\u4e24\u4e2a\u4fe1\u53f7\u7684\u5f3a\u5ea6\uff0c\u800c\u4e0d\u662f\u7edd\u5bf9\u503c\u3002<\/p>\n

DBM\u7684\u8ba1\u7b97\u65b9\u6cd5<\/h2>\n

  DBM\u7684\u8ba1\u7b97\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06\u4fe1\u53f7\u7684\u529f\u7387\uff08\u4ee5\u6beb\u74e6\u8868\u793a\uff09\u9664\u4ee51\u6beb\u74e6\uff0c\u7136\u540e\u5c06\u7ed3\u679c\u4ee5dBm\u4e3a\u5355\u4f4d\u8868\u793a\u5373\u53ef\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4fe1\u53f7\u7684\u529f\u7387\u4e3a10\u6beb\u74e6\uff0c\u5219\u5b83\u7684DBM\u503c\u4e3a10dBm\uff1b\u5982\u679c\u4fe1\u53f7\u7684\u529f\u7387\u4e3a100\u6beb\u74e6\uff0c\u5219\u5b83\u7684DBM\u503c\u4e3a20dBm\u3002<\/p>\n

  DBM\u7684\u8ba1\u7b97\u516c\u5f0f\u5982\u4e0b\uff1a<\/p>\n

  dBm = 10 x log\uff08P \/ 1mW\uff09<\/p>\n

  \u5176\u4e2d\uff0cP\u8868\u793a\u4fe1\u53f7\u7684\u529f\u7387\uff0c\u4ee5\u6beb\u74e6\u8868\u793a\uff0c1mW\u8868\u793a1\u6beb\u74e6\u3002<\/p>\n

\u5982\u4f55\u4f7f\u7528DBM\u68c0\u6d4b\u4fe1\u53f7\u8d28\u91cf<\/h2>\n

  \u4f7f\u7528DBM\u53ef\u4ee5\u68c0\u6d4b\u4fe1\u53f7\u7684\u5f3a\u5ea6\uff0c\u4ece\u800c\u5224\u65ad\u4fe1\u53f7\u7684\u8d28\u91cf\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u4fe1\u53f7\u7684DBM\u503c\u8d8a\u9ad8\uff0c\u4fe1\u53f7\u7684\u8d28\u91cf\u8d8a\u597d\u3002<\/p>\n

  \u4f8b\u5982\uff0c\u5728Wi-Fi\u7f51\u7edc\u4e2d\uff0c\u901a\u5e38\u6709\u4e09\u79cd\u4fe1\u53f7\u5f3a\u5ea6\uff1a\u5f31\uff08-60dBm\uff09\u3001\u4e2d\uff08-50dBm\uff09\u548c\u5f3a\uff08-40dBm\uff09\u3002\u5982\u679c\u4fe1\u53f7\u7684\u5f3a\u5ea6\u4f4e\u4e8e-60dBm\uff0c\u5219\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u5f88\u5dee\uff0c\u53ef\u80fd\u65e0\u6cd5\u6b63\u5e38\u8fde\u63a5\uff1b\u5982\u679c\u4fe1\u53f7\u7684\u5f3a\u5ea6\u5728-60dBm\u81f3-50dBm\u4e4b\u95f4\uff0c\u5219\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u4e00\u822c\uff0c\u53ef\u4ee5\u6b63\u5e38\u8fde\u63a5\uff1b\u5982\u679c\u4fe1\u53f7\u7684\u5f3a\u5ea6\u9ad8\u4e8e-50dBm\uff0c\u5219\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u5f88\u597d\uff0c\u53ef\u4ee5\u6b63\u5e38\u8fde\u63a5\u3002<\/p>\n

  \u56e0\u6b64\uff0c\u4f7f\u7528DBM\u53ef\u4ee5\u68c0\u6d4b\u4fe1\u53f7\u7684\u5f3a\u5ea6\uff0c\u4ece\u800c\u5224\u65ad\u4fe1\u53f7\u7684\u8d28\u91cf\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  DBM\uff08Decibel-milliwatts\uff09\u662f\u4e00\u79cd\u8861\u91cf\u4fe1\u53f7\u5f3a\u5ea6\u7684\u5355\u4f4d\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u65e0\u7ebf\u7535\u4fe1\u53f7\u7684\u5927\u5c0f\uff0c\u4ece\u800c\u68c0\u6d4b\u4fe1\u53f7\u7684\u8d28\u91cf\u3002<\/strong>DBM\u7684\u8ba1\u7b97\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u53ea\u9700\u8981\u5c06\u4fe1\u53f7\u7684\u529f\u7387\uff08\u4ee5\u6beb\u74e6\u8868\u793a\uff09\u9664\u4ee51\u6beb\u74e6\uff0c\u7136\u540e\u5c06\u7ed3\u679c\u4ee5dBm\u4e3a\u5355\u4f4d\u8868\u793a\u5373\u53ef\u3002\u4f7f\u7528DBM\u53ef\u4ee5\u68c0\u6d4b\u4fe1\u53f7\u7684\u5f3a\u5ea6\uff0c\u4ece\u800c\u5224\u65ad\u4fe1\u53f7\u7684\u8d28\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

DBM\uff08Decibel-milliwatts\uff09\u662f\u4e00\u79cd\u8861\u91cf\u4fe1\u53f7\u5f3a\u5ea6\u7684\u5355\u4f4d\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8861\u91cf\u65e0\u7ebf\u7535\u4fe1\u53f7\u7684\u5927\u5c0f\uff0c\u4ece\u800c\u68c0\u6d4b\u4fe1\u53f7\u7684\u8d28\u91cf\u3002\u5b83\u53ef\u4ee5\u8861\u91cf\u4fe1<\/p>\n","protected":false},"author":1,"featured_media":4132,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[305],"class_list":["post-44037","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzjs"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/44037","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=44037"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/44037\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=44037"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=44037"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=44037"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}