{"id":2298,"date":"2015-09-01T00:00:55","date_gmt":"2015-08-31T15:00:55","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=2298"},"modified":"2023-07-28T15:48:50","modified_gmt":"2023-07-28T06:48:50","slug":"dbkeisan_j","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/note\/application\/dbkeisan_j.html","title":{"rendered":"A basic method of calculation in dB for wireless applications"},"content":{"rendered":"<p class=\"has-large-font-size\"><strong>How to create level diagram of a wireless applicat ion using anechoic box <\/strong><\/p><div class=\"wp-block-vk-blocks-table-of-contents-new vk_tableOfContents vk_tableOfContents-style-default tabs\"><div class=\"tab\"><div class=\"vk_tableOfContents_title\">\u76ee\u6b21<\/div><input type=\"checkbox\" id=\"chck1\"\/><label class=\"tab-label vk_tableOfContents_openCloseBtn button_status button_status-close\" for=\"chck1\"><\/label><ul class=\"vk_tableOfContents_list tab_content-close\"><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\" data-reactroot=\"\"><a href=\"#vk-htags-1f2765b1-87c6-45c3-98b7-ec3cd179b7dd\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">1. <\/span>Application<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\" data-reactroot=\"\"><a href=\"#vk-htags-ef562067-ef55-4986-8f8c-ac3571d5fde2\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">2. <\/span>Solution<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-3\" data-reactroot=\"\"><a href=\"#vk-htags-f15e9c73-f5b5-4e8b-be4b-cdc41a65558a\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">2.1. <\/span>A basic of calculation in dB<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-3\" data-reactroot=\"\"><a href=\"#vk-htags-92c12325-ca98-4cb4-a9b7-6fb1405089cf\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">2.2. <\/span>Calculation in dB for creating level diagrams of wireless applications <\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\" data-reactroot=\"\"><a href=\"#vk-htags-de63fc5a-9535-4639-ae12-f8ba347216bd\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">3. <\/span>System configuration<\/a><\/li><li class=\"vk_tableOfContents_list_item vk_tableOfContents_list_item-h-2\" data-reactroot=\"\"><a href=\"#vk-htags-5914de8b-fe3a-4d34-af46-4b84dc798d29\" class=\"vk_tableOfContents_list_item_link\"><span class=\"vk_tableOfContents_list_item_link_preNumber\">4. <\/span>Products introduction<\/a><\/li><\/ul><\/div><\/div><h2 class=\"wp-block-heading\" id=\"vk-htags-1f2765b1-87c6-45c3-98b7-ec3cd179b7dd\">Application<\/h2><p>In recent years, even circuit design and digital design engi neers should learn radio technologies with the increase of wireless applications. Some of those engineers may not  be good at analyzing in dB. This paper presents a way how to create level diagram of a wireless application using an echoic box.<\/p><h2 class=\"vk_block-margin-lg--margin-top wp-block-heading\" id=\"vk-htags-ef562067-ef55-4986-8f8c-ac3571d5fde2\">Solution<\/h2><h3 class=\"vk_block-margin-md--margin-top wp-block-heading\" id=\"vk-htags-f15e9c73-f5b5-4e8b-be4b-cdc41a65558a\">A basic of calculation in dB<\/h3><p class=\"vk_block-margin-md--margin-top\">1[mW]\uff1a10 x log(1)=0[dBm], 10[mW]\uff1a10 x log(10)=10[dBm], 20[mW]\uff1a10 x log(20)=13[dBm], 100[mW]\uff1a10 x log(100)=20[dBm]<\/p><h3 class=\"vk_block-margin-md--margin-top wp-block-heading\" id=\"vk-htags-92c12325-ca98-4cb4-a9b7-6fb1405089cf\">Calculation in dB for creating level diagrams of wireless applications <\/h3><p>A test system with an anechoic box to evaluate communic ation properties in wireless applications is shown in below figure.<\/p><figure class=\"wp-block-image aligncenter\"><img decoding=\"async\" src=\"\/eng\/image\/application\/dBkeisan_j-00.gif\" alt=\"Figure:A test system with an anechoic box to evaluate communic ation properties in wireless applications\"\/><\/figure><p>As shown above,  the transmission power and the received po wer is related in a simple algebraic sum. Accordingly, and when inserting a power amplifier between the transmitte r and the transmitting antenna,or inserting a low noise amplifier between the receiving antenna and the receiver, l evel diagram can be created by simply adding their amplification degree [dB] in the above equation.<\/p><h2 class=\"vk_block-margin-lg--margin-top wp-block-heading\" id=\"vk-htags-de63fc5a-9535-4639-ae12-f8ba347216bd\">System configuration<\/h2><figure class=\"wp-block-flexible-table-block-table\"><table class=\"\"><tbody><tr><td><a href=\"\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\">Signal analyzer [MSA538]<\/a><\/td><td style=\"text-align:right\"> x 1<\/td><\/tr><tr><td><a href=\"\/english\/products\/shield-box\/\">Electromagnetic anechoic box<\/a><\/td><td>&nbsp;<\/td><\/tr><tr><td>Antenna<\/td><td>&nbsp;<\/td><\/tr><tr><td>Jigs to mount antenna and EUT<\/td><td>&nbsp;<\/td><\/tr><tr><td>Others(PC, I\/F modules, cables, etc)<\/td><td>&nbsp;<\/td><\/tr><\/tbody><\/table><\/figure><h2 class=\"vk_block-margin-lg--margin-top wp-block-heading\" id=\"vk-htags-5914de8b-fe3a-4d34-af46-4b84dc798d29\">Products introduction<\/h2><div class=\"wp-block-vk-blocks-select-post-list vk_posts vk_posts-postType-post vk_posts-layout-card-noborder vk_postList\"><div id=\"post-5782\" class=\"vk_post vk_post-postType-product card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-2298 post type-post status-publish format-standard has-post-thumbnail hentry category-category-note tag-app-knowledge tag-market-wireless-communication tag-application-shield-box tag-application-spectrum-analyzer\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa538_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\">Handheld Signal Analyzer MSA538<\/a><\/h5><p class=\"vk_post_excerpt card-text\">The most popular model of the MSA500 series.<br \/>\r\nMeasurement frequency : 20kHz to 3.3GHz <\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] -->\n\n<div id=\"post-5434\" class=\"vk_post vk_post-postType-page card card-noborder vk_post-col-xs-12 vk_post-col-sm-6 vk_post-col-md-3 vk_post-col-lg-3 vk_post-col-xl-3 vk_post-col-xxl-3 post-2298 post type-post status-publish format-standard has-post-thumbnail hentry category-category-note tag-app-knowledge tag-market-wireless-communication tag-application-shield-box tag-application-spectrum-analyzer\"><div class=\"vk_post_imgOuter\" style=\"background-image:url(https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MY5630_620x620.png)\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/shield-box\/\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MY5630_620x620-300x300.png\" class=\"vk_post_imgOuter_img card-img-top wp-post-image\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MY5630_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MY5630_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MY5630_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MY5630_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/div><!-- [ \/.vk_post_imgOuter ] --><div class=\"vk_post_body card-body\"><h5 class=\"vk_post_title card-title\"><a href=\"https:\/\/micronix-jp.com\/english\/products\/shield-box\/\">Electromagnetic anechoic box \/ Shield box<\/a><\/h5><p class=\"vk_post_excerpt card-text\">An electromagnetic anechoic box or shield box produced by a measurement instrument manufacturer. We have created a lineup of various models of radio wave dark boxes and shield boxes to meet the diverse needs of our customers. We also offer customization to meet the specific requests of our customers.<\/p><\/div><!-- [ \/.card-body ] --><\/div><!-- [ \/.card ] --><\/div><p><\/p><p><\/p><p><\/p><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-7c864b37-613b-4406-bf29-1046339ae41c vk_button-align-block\"><a href=\"\/eng\/file-download\/application\/pdf\/dBkeisan_e.pdf\" class=\"vk_button_link btn has-background btn-lg btn-block\" role=\"button\" aria-pressed=\"true\" target=\"_blank\" rel=\"noopener\"><div class=\"vk_button_link_caption\"><i class=\"fas fa-file-pdf vk_button_link_before\" aria-hidden=\"true\"><\/i><span class=\"vk_button_link_txt\">Download This Application Note (PDF)<\/span><\/div><\/a><\/div><style type=\"text\/css\">.vk_button-7c864b37-613b-4406-bf29-1046339ae41c .has-background {\n\t\t\t\tbackground-color: #5b6069;\n\t\t\t\tborder: 1px solid #5b6069;\n\t\t\t} <\/style><div class=\"wp-block-cover is-light vk_block-margin-xl--margin-top\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-white-background-color has-background-dim\"><\/span><img class=\"wp-block-cover__image-background wp-image-8105\" alt=\"\" src=\"https:\/\/micronix-jp.com\/wp-content\/uploads\/2022\/11\/contact_cta_cover.png\" data-object-fit=\"cover\"\/><div class=\"wp-block-cover__inner-container is-layout-flow wp-block-cover-is-layout-flow\"><p class=\"has-text-align-center has-huge-font-size\"><strong>Please feel free to contact us.<\/strong><\/p>\n\n<p>If you want to verify 5G, customize a radio wave shield box, or need product repair, please do not hesitate to contact us about any small matter.<\/p>\n\n<div class=\"wp-block-vk-blocks-grid-column vk_gridColumn\"><div class=\"row\"><div class=\"wp-block-vk-blocks-grid-column-item vk_gridColumn_item col-12 col-sm-12 col-md-12 col-lg-12 col-xl-12 col-xxl-12\"><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block is-style-shine\"><a href=\"https:\/\/micronix-jp.com\/english\/contact\/\" class=\"vk_button_link btn has-background has-luminous-vivid-orange-background-color btn-lg btn-block\" role=\"button\" aria-pressed=\"true\" target=\"_blank\" rel=\"noopener\"><div class=\"vk_button_link_caption\"><i class=\"far fa-envelope vk_button_link_before\" aria-hidden=\"true\"><\/i><span class=\"vk_button_link_txt\"><strong>Contact Form<\/strong><\/span><\/div><\/a><\/div><\/div><\/div><\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>In recent years, even circuit design and digital design engineers should learn radio technologies with the increase of<br \/>\nwireless applications. Some of those engineers may not be good at analyzing in dB. This paper presents a way how<br \/>\nto create level diagram of a wireless application using anechoic box.<\/p>\n","protected":false},"author":1,"featured_media":8227,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[17],"tags":[47,68,73,75],"class_list":["post-2298","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-category-note","tag-app-knowledge","tag-market-wireless-communication","tag-application-shield-box","tag-application-spectrum-analyzer"],"_links":{"self":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2298","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/comments?post=2298"}],"version-history":[{"count":8,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2298\/revisions"}],"predecessor-version":[{"id":9509,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2298\/revisions\/9509"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media\/8227"}],"wp:attachment":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media?parent=2298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/categories?post=2298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/tags?post=2298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}