{"id":2255,"date":"2011-03-01T00:00:54","date_gmt":"2011-02-28T15:00:54","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=2255"},"modified":"2023-03-20T17:26:00","modified_gmt":"2023-03-20T08:26:00","slug":"hand","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/note\/application\/hand.html","title":{"rendered":"Handover test of mobile terminal"},"content":{"rendered":"<p class=\"bigTitle\" style=\"margin-bottom: 1em\">Simulation of the transmission path between the base stations<\/p>\n\n\n<h2>Application<\/h2>\n<p> In mobile communication equipment such as mobile phone, the information should be transferred without breaking off when the transmission path is switched from a base station to next base station (called handover). <\/p>\n<p>This handover test can be simulated using two or more units of MAT800 or MAT810.<\/p>\n\n\n\n<h2>Solution<\/h2>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/eng\/image\/application\/hand-00.gif\" alt=\"Figure:Actual image  \u3001Simulation\u3001System configuration\" width=\"730\" height=\"320\">\n<ul>\n<li>Since mobile phone goes away from the base station A, the receiving level becomes low gradually, and conversely it becomes high gradually in the base station B.  Moreover, there may be an obstacle blocking the radio wave in the middle. <br>\nThis simulation is shown in the figure above \"Signal generation\". <\/li>\n<li>High-speed programmable attenuators MAT800\/810 are electronic type.  Since any spike and chattering are not generated when switching, it is the optimum instrument for simulating the change\t\t\t\t\t\t\t\t\t\t\t     of radio wave in the air. <\/li>\n<li>The difference and feature from conventional attenuator are shown in the table below.<\/li>\n<\/ul>\n<p style=\"margin-bottom:.2em;margin-top: 2em\">[Difference and feature from conventional attenuator]<\/p>\n\n<style>\ntable.SimpleCenter th,\ntable.SimpleCenter td{\ntext-align: center;\n}\n<\/style>\n\n<table class=\"SimpleCenter\">\n<tbody><tr>\n<th width=\"25%\">Item<\/th>\n<th width=\"25%\">Traditional attenuator <\/th>\n<th width=\"25%\">MAT800\/810<\/th>\n<th width=\"25%\">Remarks<\/th>\n<\/tr>\n<tr>\n<td>Swiching method<\/td>\n<td>Mechanical<\/td>\n<td>Electronic<\/td>\n<td>\u3000<\/td>\n<\/tr>\n<tr>\n<td>Swiching speed<\/td>\n<td>0 to 20ms\/point<\/td>\n<td>2\u03bcs\/point<\/td>\n<td>Great improvement of time resolution<\/td>\n<\/tr>\n<tr>\n<td>Attenuation step<\/td>\n<td>1dB<\/td>\n<td>0.05dB<\/td>\n<td>Great improvement of amplitude resolution<\/td>\n<\/tr>\n<tr>\n<td>Spike at swiching<\/td>\n<td><img loading=\"lazy\" decoding=\"async\" src=\"\/eng\/image\/application\/hand-01.gif\" alt=\"Figure:Large spike\" width=\"100\" height=\"83\" style=\"width:100px\"><br>\nLarge spike<\/td>\n<td><img loading=\"lazy\" decoding=\"async\" src=\"\/eng\/image\/application\/hand-02.gif\" alt=\"Figure:No spike\" width=\"100\" height=\"83\" style=\"width:100px\"><br>\nNo spike<\/td>\n<td>The spike causes the communication error<\/td>\n<\/tr>\n<tr>\n<td>Proguram memory<\/td>\n<td>Nothing<\/td>\n<td>128\uff4bword built-in program memory<\/td>\n<td>The air state is stored<\/td>\n<\/tr>\n<tr>\n<td>Program memory<\/td>\n<td>Nothing<\/td>\n<td>\n<ul style=\"text-align: left\">\n<li>FREE, BURST, GATE<\/li>\n<li>Triffer for readout<\/li>\n<li>Internal\/external readout clock<\/li>\n<li>Pause period of readout cycle<\/li>\n<\/ul><\/td>\n<td>Various memory readout function<\/td>\n<\/tr>\n<tr>\n<td>Software for maiking<\/td>\n<td>Nothing<\/td>\n<td>Making attenuation progrum can be done as easily as maiking arbitrary waveform.<\/td>\n<td>Standard accessory of MAT800\/810<\/td>\n<\/tr>\n<\/tbody><\/table>\n\n\n\n\n<h2>System configuration<\/h2>\n<table>\n<tbody>\n<tr>\n<th colspan=\"2\" nowrap=\"\">MAT800 x 2 units<\/th>\n<\/tr>\n<tr>\n<td>Base station simulator<\/td>\n<td nowrap=\"\" class=\"textRight\"> x 2<\/td>\n<\/tr>\n<tr>\n<td><a href=\"\/english\/products\/attenuator\/mat800.html\">High-speed programmable attenuator  \uff3bMAT800\/model D\uff3d<\/a><\/td>\n<td nowrap=\"\" class=\"textRight\"> x 2<\/td>\n<\/tr>\n<tr>\n<td>Software for making attenuation program \uff3bMAS800]<\/td>\n<td nowrap=\"\" class=\"textRight\"> x 2<\/td>\n<\/tr>\n<tr>\n<td>SMA =&gt; N coaxial cable 1.5m \uff3bMC204-MA306\uff3d<\/td>\n<td nowrap=\"\" class=\"textRight\">4<\/td>\n<\/tr>\n<tr>\n<td>Biconical Antenna \uff3bMBA301\uff3d\uff0faccessories<\/td>\n<td nowrap=\"\" class=\"textRight\">4<\/td>\n<\/tr>\n<\/tbody>\n<tfoot>\n<\/tfoot>\n<\/table>\n\n\n\n<h2>Products introduction<\/h2>\n<div class=\"woocommerce columns-3 \"><\/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\/Handover_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>Simulation of the transmission path between the base stations Application In mobile communication equipment such as mobile phone, the information should be transferred without breaking off when the transmission path [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8198,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[17],"tags":[68,70,72],"class_list":["post-2255","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-category-note","tag-market-wireless-communication","tag-application-attenuator","tag-application-measuring-system"],"_links":{"self":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2255","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=2255"}],"version-history":[{"count":1,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2255\/revisions"}],"predecessor-version":[{"id":7074,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/2255\/revisions\/7074"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media\/8198"}],"wp:attachment":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media?parent=2255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/categories?post=2255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/tags?post=2255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}