{"id":529,"date":"2022-03-25T11:24:48","date_gmt":"2022-03-25T10:24:48","guid":{"rendered":"https:\/\/blog.tomasbrincil.cz\/?p=529"},"modified":"2022-03-25T11:25:19","modified_gmt":"2022-03-25T10:25:19","slug":"portable-yagi-uda-satcom-antenna","status":"publish","type":"post","link":"https:\/\/blog.tomasbrincil.cz\/?p=529","title":{"rendered":"Portable Yagi-Uda satcom antenna"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-5-1024x768.png\" alt=\"\" class=\"wp-image-535\" width=\"600\" srcset=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-5-1024x768.png 1024w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-5-300x225.png 300w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-5-768x576.png 768w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-5-1200x900.png 1200w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-5.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>Assembled Yagi-Uda antenna for UHF satcom<\/figcaption><\/figure>\n\n\n\n<p>For covering wide frequency range the Yagi-Uda antenna is not best choice. NanoVNA came with quite cool design which benefits from resonation between radiator and first director causing lowering gain but making it very wideband.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-2.png\" alt=\"\" class=\"wp-image-532\" width=\"600\" srcset=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-2.png 750w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-2-300x208.png 300w\" sizes=\"(max-width: 750px) 100vw, 750px\" \/><figcaption>MMANA model of the antenna and currents on elements.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-1.png\" alt=\"\" class=\"wp-image-531\" width=\"600\" srcset=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-1.png 756w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-1-300x148.png 300w\" sizes=\"(max-width: 756px) 100vw, 756px\" \/><figcaption>Radiation pattern of the antenna in vertical and horizontal plane.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-3.png\" alt=\"\" class=\"wp-image-533\" width=\"600\" srcset=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-3.png 564w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-3-300x195.png 300w\" sizes=\"(max-width: 564px) 100vw, 564px\" \/><figcaption>Unusually wide frequency range of Yagi-Uda antenna.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-4.png\" alt=\"\" class=\"wp-image-534\" width=\"600\" height=\"368\"\/><figcaption>Impedance of the antenna across 240 to 320 MHz.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-7.png\" alt=\"\" class=\"wp-image-543\" width=\"600\" srcset=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-7.png 889w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-7-300x206.png 300w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-7-768x528.png 768w\" sizes=\"(max-width: 889px) 100vw, 889px\" \/><figcaption>Detail of BNC connector feeding dipole.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><img decoding=\"async\" src=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-6-1024x444.png\" alt=\"\" class=\"wp-image-536\" width=\"600\" srcset=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-6-1024x444.png 1024w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-6-300x130.png 300w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-6-768x333.png 768w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-6-1200x520.png 1200w, https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/image-6.png 1280w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption>Disassembled antenna.<\/figcaption><\/figure>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-fb67c653-0d91-47a8-9500-e88c5a99ac63\" href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_driven_element_15x15_8mm.stl\">satcom_ok1bt_yagi_driven_element_15x15_8mm<\/a><a href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_driven_element_15x15_8mm.stl\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-fb67c653-0d91-47a8-9500-e88c5a99ac63\">Download<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-fe1ea8e4-2dcd-4563-92e9-4be1e770e9a2\" href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_tube_holder_15x15_8mm.stl\">satcom_ok1bt_yagi_tube_holder_15x15_8mm<\/a><a href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_tube_holder_15x15_8mm.stl\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-fe1ea8e4-2dcd-4563-92e9-4be1e770e9a2\">Download<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-5fd3f8ee-d2d9-4b73-8d9b-1090bf6eb124\" href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_profile_cap.stl\">satcom_ok1bt_yagi_profile_cap<\/a><a href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_profile_cap.stl\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-5fd3f8ee-d2d9-4b73-8d9b-1090bf6eb124\">Download<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-e47f418b-0321-4151-ad62-a6b8a08d05a9\" href=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_tube_cap.stl\">satcom_ok1bt_yagi_tube_cap<\/a><a href=\"https:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/satcom_ok1bt_yagi_tube_cap.stl\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-e47f418b-0321-4151-ad62-a6b8a08d05a9\">Download<\/a><\/div>\n\n\n\n<div class=\"wp-block-file\"><a id=\"wp-block-file--media-1336f325-d479-4288-89cd-b79a3f54d39e\" href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/NanoVHF_yagi_uda_4el_satcom_d8mml.maa.txt\">NanoVHF_yagi_uda_4el_satcom_d8mml.maa<\/a><a href=\"http:\/\/blog.tomasbrincil.cz\/wp-content\/uploads\/2022\/02\/NanoVHF_yagi_uda_4el_satcom_d8mml.maa.txt\" class=\"wp-block-file__button\" download aria-describedby=\"wp-block-file--media-1336f325-d479-4288-89cd-b79a3f54d39e\">Download<\/a><\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>For covering wide frequency range the Yagi-Uda antenna is not best choice. NanoVNA came with quite cool design which benefits from resonation between radiator and first director causing lowering gain but making it very wideband.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-529","post","type-post","status-publish","format-standard","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=\/wp\/v2\/posts\/529","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=529"}],"version-history":[{"count":3,"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=\/wp\/v2\/posts\/529\/revisions"}],"predecessor-version":[{"id":560,"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=\/wp\/v2\/posts\/529\/revisions\/560"}],"wp:attachment":[{"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=529"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=529"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.tomasbrincil.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=529"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}