{"id":1892,"date":"2004-03-19T10:48:35","date_gmt":"2004-03-19T01:48:35","guid":{"rendered":"https:\/\/micronix-jp.com\/?p=1892"},"modified":"2023-03-20T17:11:22","modified_gmt":"2023-03-20T08:11:22","slug":"msa338_application_4_eng","status":"publish","type":"post","link":"https:\/\/micronix-jp.com\/english\/tech\/technology\/msa338_application_4_eng.html","title":{"rendered":"Measurement in band from 9 to 13GHz by parabolic antenna with down-converter"},"content":{"rendered":"<section>\n<h2>Concrete application example<\/h2>\n<p>The signal of band from 7.9 to 14.5GHz is received by a parabolic antenna, and then it is converted to the lower frequency from 50kHz to 3.3GHz by a down-converter attached to the parabolic antenna. MSA338 can observe this signal converted to the lower frequency. <\/p>\n<\/section>\n\n<section>\n<h2>Contents<\/h2>\n<ul>\n<li>Antenna usd:45 type CS antenna CSA-453W4K (made by DX ANTENNA) <\/li>\n<li>Frequency bandwidth:7.9 to 14.5GHz<\/li>\n<\/ul>\n<p>*LPF in the down-converter is removed.<\/p>\n<p>*The local frequency is 11.2GHz.<\/p>\n<\/section>\n\n<section>\n<h2>Block diagram and measuring method<\/h2>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/eng\/image\/technology\/MSA338_Application_4_eng-00.gif\" alt=\"Fig.1 Block diagram\" width=\"730\" height=\"319\">\n<p>Fig.1 Block diagram<\/p>\n<p>The antenna unit is connected with the power supply unit with F type cable. And at the antenna side this cable is directly connected there. The power supply unit is connected with MSA338 with the SMA cable.<\/p>\n<img loading=\"lazy\" decoding=\"async\" src=\"\/eng\/image\/technology\/MSA338_Application_4_eng-01.gif\" alt=\"Fig.2 Measurement image drawing\" width=\"574\" height=\"432\">\n<p>Fig.2 Measurement image drawing<\/p>\n<p>As shown in Fig.2, when the measurement is done at the site, the antenna unit is held by one hand and MSA338 is held by the other hand, and then the power supply unit is shouldered. <br>\n*We supplies the power supply unit.<\/p>\n<\/section>\n\n<section>\n<h2>Relation between measurement frequency and reception frequency<\/h2>\n<p>The signal (measurement frequency) displayed on the screen of MSA338 is different at the frequency from the signal (reception frequency) actu ally received by a parabolic antenna because the reception signal more than 3.3GHz is converted down to the lower frequency. Moreover, the measurement range is limited.<\/p>\n<p>The measurement frequency is calculated from the reception frequency by the following equation.<\/p>\n<h3>Calculation expression<\/h3>\n<ul>\n<li>When the reception frequency is 11.2GHz or less:<br>\n[Measurement frequency (GHz)]=11.2GHz-[Reception frequency (GHz)] <\/li>\n<li>When the reception frequency is 11.2GHz or more:<br>\n[Measurement frequency (GHz)]=[Reception frequency (GHz)] -11.2GHz<br>\n*owever, the local frequency is 11.2GHz, and the measurement frequency must become 3.3GHz or less.<\/li>\n<\/ul>\n<p>The reception frequency is as follows from the above expression. <br>\n7.9 to 11.2GHz, and 11.2 to 14.5GHz<br>\nHowever, it narrows as follows by the receiving sensitivity of the antenna unit. <br>\n9.7 to 11GHz, and 11.4GHz to 12.7GHz<\/p>\n<\/section>\n\n<section>\n<h2>Products introduction<\/h2>\n<div class=\"woocommerce \"><ul class=\"products columns-4\">\n<li class=\"product type-product post-5791 status-publish first instock product_cat-shop-category-discontinued-product product_cat-shop-category-handheld-spectrum-analyzer product_cat-shop-category-msa300 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\/msa300\/msa338.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\/msa300_620x620-300x300.png\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"\" srcset=\"https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa300_620x620-300x300.png 300w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa300_620x620-150x150.png 150w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa300_620x620-600x600.png 600w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa300_620x620-100x100.png 100w, https:\/\/micronix-jp.com\/english\/wp-content\/uploads\/sites\/2\/2023\/03\/msa300_620x620.png 620w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2 class=\"woocommerce-loop-product__title\">[Discontinued roduct]Handheld Spectrum Analyzer MSA338<\/h2>\n<\/a><\/li>\n<\/ul>\n<\/div>\n<\/section><div class=\"wp-block-vk-blocks-button vk_button vk_button-color-custom vk_button-align-block\"><a href=\"\/eng\/file-download\/technical\/pdf\/MSA338_Application_4_eng.pdf\" style=\"background-color:#726756;border:1px solid #726756;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 Technical Report (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 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[&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":8272,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[32],"tags":[86],"class_list":["post-1892","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-category-technology","tag-technology-spectrum-analyzer"],"_links":{"self":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/1892","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=1892"}],"version-history":[{"count":1,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/1892\/revisions"}],"predecessor-version":[{"id":6986,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/posts\/1892\/revisions\/6986"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media\/8272"}],"wp:attachment":[{"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/media?parent=1892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/categories?post=1892"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/micronix-jp.com\/english\/wp-json\/wp\/v2\/tags?post=1892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}