{"id":2616,"date":"2023-02-15T19:50:33","date_gmt":"2023-02-15T19:50:33","guid":{"rendered":"https:\/\/www.emcfastpass.com\/test-equipment\/?post_type=product&#038;p=2616"},"modified":"2026-03-19T19:50:38","modified_gmt":"2026-03-19T19:50:38","slug":"horn-antenna-tbma4","status":"publish","type":"product","link":"https:\/\/www.emcfastpass.com\/test-equipment\/shop\/antennas\/horn-antenna-tbma4\/","title":{"rendered":"Double Ridged Horn Antenna &#8211; TBMA4"},"content":{"rendered":"<p>CISPR 16 divides the frequency range into several bands and defines specific antennas for each of these bands. For the frequency range above 1 GHz, CISPR 16 specifies using wideband horn antennas for radiated noise measurements.<\/p>\n<p>Standard wideband horn antennas for EMC applications are quite costly and cover a frequency range far wider than available on typical low cost EMC pre-compliance spectrum analyzers. In order to provide an antenna optimized for pre-compliance EMC testing applications above 1 GHz, Tekbox designed the TBMA4 double ridged horn measurement antenna.With its moderate price, it is an affordable product for radiated noise EMC precompliance testing and generating defined field strengths.<\/p>\n<p>The TBMA4 is characterized from 1 GHz to 8 GHz and has a directional pattern typical for double ridged horn antennas.<\/p>\n<p>The TBMA4 is a small double ridged horn antenna, with its radiating element made from edge plated PCB substrate. The housing is made from stainless steel. It is equipped with a standard female N-connector and comes together with a \u201cpistol-grip\u201d tripod. A standard \u00bc\u201d thread on the bottom of the antenna makes it easy to connect it to most standard tripods.<\/p>\n<p>Additionally, the antenna is equipped with an indexed mounting plate on its rear. The mounting plate has a 6mm threaded hole in its centre and radially positioned 4mm threaded holes in 45\u00b0 steps, typical for most horn antennas.<\/p>\n<h3>SPECIFICATION<\/h3>\n<ul>\n<li class=\"p1\">Type: double ridged horn<\/li>\n<li class=\"p1\">Frequency range: 1 GHz \u2013 8 GHz<\/li>\n<li class=\"p1\">Nominal impedance: 50 \u03a9<\/li>\n<li class=\"p1\">Connector: N type female<\/li>\n<li class=\"p1\">Maximum continuous input RF power: 100 W<\/li>\n<li class=\"p1\">Isotropic gain: 6 \u2026 14 dBi<\/li>\n<li class=\"p1\">Antenna factor: 24 \u2026 43 dB\/m<\/li>\n<li class=\"p1\">Front to back ratio: avg. 20 dB<\/li>\n<li class=\"p1\">Voltage Standing Wave Ratio (VSWR): &lt; 3:1 over the entire frequency range; &lt; 2:1 average<\/li>\n<li class=\"p1\">Width: 241 mm (9.49 \u201c)<\/li>\n<li class=\"p1\">Height: 153 mm (6.03 \u201c)<\/li>\n<li class=\"p1\">Depth: 214 mm (8.44 \u201c)<\/li>\n<li class=\"p1\">Weight: 1.4 kg (3.08 lbs)<\/li>\n<li class=\"p1\">Tripod Adapter Thread Size: \u00bc\u201d<\/li>\n<li class=\"p1\">Indexed rear mounting flange<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Low-cost double ridged horn antenna for in-house EMC\/EMI radiated emissions and immunity pre-compliance testing. Wide bandwidth 1 GHz &#8211; 8 GHz<\/p>\n","protected":false},"featured_media":2618,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"product_brand":[129],"product_cat":[216],"product_tag":[],"class_list":{"0":"post-2616","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_brand-tekbox","7":"product_cat-antennas","9":"first","10":"outofstock","11":"taxable","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Double Ridged Horn Antenna - TBMA4 - EMC Chambers &amp; Test Equipment<\/title>\n<meta name=\"description\" content=\"Low-cost double ridged horn antenna for in-house EMC\/EMI radiated emissions and immunity pre-compliance testing. 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