{"id":2178,"date":"2009-03-01T00:00:52","date_gmt":"2009-02-28T15:00:52","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=2178"},"modified":"2023-03-20T17:30:22","modified_gmt":"2023-03-20T08:30:22","slug":"anechoic-uhfj","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/note\/application\/anechoic-uhfj.html","title":{"rendered":"RFID read \/ write test"},"content":{"rendered":"<p class=\"bigTitle\" style=\"margin-bottom: 1em\">The RFID read\/write test by using Anechoic box,signal analyzer and Programmable attenuator<\/p>\n\n\n<h2>Application<\/h2>\n<ul>\n<li>The various radio waves flit in the office and the factory. (PC, Server, Wireless LAN and etc.) <\/li>\n<li>The radio waves of a public wireless and being used in other offices enter from the outside. (Cellular phone, Wireless LAN and PHS)<\/li>\n<li>If the DUT (device under test) is measured in the anechoic box, the correct data can be gotten because outside noise is inteercepted and internal radio wave is absorbed.<\/li>\n<li>The programmable attenuator with the frequency range from 750MHz to 12.5GHz enables the simulation of the receiving sensitivity.<\/li>\n<\/ul>\n<p>object : slight wireless \/ 900MHz UHF band of RFID<\/p>\n\n\n\n<h2>Solution<\/h2>\n<h3>Problem and solution<\/h3>\n<ol>\n<li>The measurement value from antenna displayed on a signal analyzer changes at each measurement<br>\n=&gt;  The measurement value becomes stable when the outside noise is cut off more than 60dB.<\/li>\n<li>The strong reflection occurs in the shield box<br>\n=&gt; The reflection decreases when it is absorbed more than 10dB by the radio wave absorber.<\/li>\n<li>Fresnel zone is measured at the correct distance in the anechoic box<br>\n=&gt;  The measured data is almost same as in a chamber.<\/li>\n<li>The handover test and the carrier sense level can be simulated by using the programmable attenuator together.<\/li>\n<\/ol>\n<h3>Usage example<\/h3>\nslight wireless \/ 900MHz UHF band of RFID (Fresnel zone 35cm ellipse)\n<img loading=\"lazy\" decoding=\"async\" src=\"\/eng\/image\/application\/Anechoic-UHFj-00.jpg\" alt=\"Figure:\u4f7f\u7528\u4f8b)\" width=\"730\" height=\"354\"> \n\n\n<h2>System configuration<\/h2>\n<table>\n<tbody>\n<tr>\n<td><a href=\"\/english\/products\/shield-box\/taurus\/my1530.html\">Electromagnetic anechoic box MY1530 <\/a><\/td>\n<td nowrap=\"\" class=\"textRight\"> x 1<\/td>\n<\/tr>\n<tr>\n<td><a href=\"\/english\/products\/test-accessories\/m401.html\">800MHz to 1GHz sleeve antenna M301 <\/a><\/td>\n<td nowrap=\"\" class=\"textRight\"> x 2<\/td>\n<\/tr>\n<tr>\n<td><a href=\"\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\">3.3GHz Signal analyzer MSA538 <\/a><\/td>\n<td nowrap=\"\" class=\"textRight\"> x 1<\/td>\n<\/tr>\n<tr>\n<td><a href=\"\/english\/products\/attenuator\/mat800.html\">750MHz to 2.2GHzProgrammable attenuator  MAT800E <\/a><\/td>\n<td nowrap=\"\" class=\"textRight\"> x 1<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<\/tfoot>\n<\/table>\n\n\n\n\n<h2>Products introduction<\/h2>\n<div class=\"woocommerce columns-3 \"><ul class=\"products columns-3\">\n<li class=\"product type-product post-5955 status-publish first instock product_cat-shop-category-etc-option product_cat-shop-category-variable-attenuator product_tag-tag-high-speed-programmable-attenuator has-post-thumbnail shipping-taxable product-type-variable has-default-attributes\">\n\t<a href=\"https:\/\/micronix-jp.com\/english\/products\/attenuator\/mat800.html\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MAT800_640x640-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MAT800_640x640-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MAT800_640x640-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MAT800_640x640-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/MAT800_640x640.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">High-Speed Programmable Attenuator MAT800 Series<\/h2>\n<\/a><\/li>\n<li class=\"product type-product post-5800 status-publish instock product_cat-shop-category-shield-box product_cat-shop-category-shield-box-option product_cat-shop-category-handheld-spectrum-analyzer product_cat-shop-category-spectrum-analyzer-option product_cat-shop-category-test-accessories product_tag-tag-antenna product_tag-tag-electromagnetic-anechoic-box-shield-box product_tag-tag-handheld-spectrum-analyzer product_tag-tag-test-accessories has-post-thumbnail shipping-taxable product-type-variable\">\n\t<a href=\"https:\/\/micronix-jp.com\/english\/products\/test-accessories\/m401.html\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/m401_620x620-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/m401_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/m401_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/m401_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/m401_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">Portable Antenna<\/h2>\n<\/a><\/li>\n<li class=\"product type-product post-5837 status-publish last instock product_cat-shop-category-shield-box product_cat-shop-category-taurus-series product_tag-tag-electromagnetic-anechoic-box-shield-box product_tag-tag-taurus-series has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/micronix-jp.com\/english\/products\/shield-box\/taurus\/my1530.html\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"300\" src=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2007\/06\/MY1530_opne_640x640-300x300.jpg\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2007\/06\/MY1530_opne_640x640-300x300.jpg 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2007\/06\/MY1530_opne_640x640-150x150.jpg 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2007\/06\/MY1530_opne_640x640-100x100.jpg 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2007\/06\/MY1530_opne_640x640.jpg 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">Electromagnetic Anechoic Box \/Shield Box Taurus Series MY1530<\/h2>\n<\/a><\/li>\n<li class=\"product type-product post-5782 status-publish first instock product_cat-shop-category-msa500 product_cat-shop-category-handheld-spectrum-analyzer product_tag-tag-handheld-spectrum-analyzer has-post-thumbnail shipping-taxable product-type-simple\">\n\t<a href=\"https:\/\/micronix-jp.com\/english\/products\/spectrum-analyzer\/msa500\/msa538.html\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\"><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=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" 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\" \/><h2 class=\"woocommerce-loop-product__title\">Handheld Signal Analyzer MSA538<\/h2>\n<\/a><\/li>\n<\/ul>\n<\/div><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block\"><a href=\"\/eng\/file-download\/application\/pdf\/RFID_test.pdf\" style=\"background-color:#5b6069;border:1px solid #5b6069;color:#fff;\" class=\"vk_button_link btn btn-md btn-block white\" role=\"button\" aria-pressed=\"true\" target=\"_blank\"  rel=\"noopener\"><i class=\"fas vk_button_link_before fa-file-pdf\"><\/i><span class=\"vk_button_link_txt\">Download This Application Note (PDF) <\/span><\/a><\/div><p><\/p><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>The RFID read\/write test by using Anechoic box,signal analyzer and Programmable attenuator Application The various radio waves flit in the office and the factory. (PC, Server, Wireless LAN and etc.) [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8171,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[17],"tags":[70,73,75],"class_list":["post-2178","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-category-note","tag-application-attenuator","tag-application-shield-box","tag-application-spectrum-analyzer"],"_links":{"self":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2178","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=2178"}],"version-history":[{"count":1,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2178\/revisions"}],"predecessor-version":[{"id":7100,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2178\/revisions\/7100"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media\/8171"}],"wp:attachment":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media?parent=2178"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/categories?post=2178"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/tags?post=2178"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}