{"id":690137,"date":"2024-11-06T05:21:06","date_gmt":"2024-11-06T05:21:06","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/tia-tsb-1712010\/"},"modified":"2024-11-06T05:21:06","modified_gmt":"2024-11-06T05:21:06","slug":"tia-tsb-1712010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/tia\/tia-tsb-1712010\/","title":{"rendered":"TIA TSB-171:2010"},"content":{"rendered":"<p>In the land mobile service there has historically been no clear<br \/>\nrelationship between the gain of base station antennas and the gain<br \/>\nof mobile antennas. A half wavelength dipole has been used as the<br \/>\nbasis of the base station antenna gain, and a quarter wavelength<br \/>\nmonopole over a finite size ground plane has been historically used<br \/>\nfor the vehicular antenna. This makes it difficult, at best, to<br \/>\nanalyze and predict the coverage of land mobile communications. For<br \/>\nsome few years recently, the mobile standard was made a half<br \/>\nwavelength dipole, but the difficulty of using that standard<br \/>\nresulted in universal rejection by the manufacturers of mobile<br \/>\nantennas.<sup>1<\/sup><\/p>\n<p>Some measurements and computations have been made to determine<br \/>\nthe absolute gain of a quarter wavelength over a finite size ground<br \/>\nplane, and they show that it is a function of the frequency and<br \/>\nsize of the ground plane. But the gain of a half wavelength dipole<br \/>\nis a constant 2.15 dBi. And this is a comparison made in free space<br \/>\nwith no reflections such as are found in the practical land mobile<br \/>\napplication.<\/p>\n<p>This Bulletin will present the history of the antenna gain<br \/>\nstandard as used in TIA standards and those of EIA, its<br \/>\npredecessor. A review will show what has been done to relate the<br \/>\ngain of the half wavelength dipole to that of a quarter wavelength<br \/>\nmonopole over a finite size ground plane for the land mobile<br \/>\nservice. From that review it will be shown what is needed to<br \/>\naccurately analyze communications coverage in the multipath world<br \/>\nof land mobile communications.<\/p>\n<p><sup>1<\/sup> In 2005 known manufacturers of mobile antennas sold<br \/>\nin the United States and Europe were asked by TIA Subcommittee<br \/>\nTR-8.11 if they used the present TIA Standard for vehicular<br \/>\nantennas. That standard was MINIMUM STANDARDS FOR COMMUNICATIONS<br \/>\nANTENNAS, VEHICULAR ANTENNAS, TIA-329-B-1. It is the only one that<br \/>\ntried to use a half wavelength dipole as the gain standard, and<br \/>\nevery manufacturer stated that they did not use it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Terrestrial Land Mobile Radio &#8211; Antenna Systems &#8211; History and Technical Analysis of the Quarter Wave Monopole Over Finite Ground Plane as a Gain Standard<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/tia\/\"><b>TIA<\/b><\/a><\/td>\n<td>2010<\/td>\n<td>46<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":690148,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2646],"product_tag":[],"class_list":{"0":"post-690137","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-tia","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/690137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/690148"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=690137"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=690137"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=690137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}