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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Turnstile antenna ： ウィキペディア英語版 Turnstile antenna A turnstile antenna is a radio antenna consisting of a set of two identical dipole antennas aligned at right angles to each other and fed in phase quadrature; the two currents applied to the dipoles are 90° out of phase.〔 filed: September 20, 1935; granted: July 13, 1937〕 The name reflects the notion the antenna looks like a turnstile when mounted horizontally. The turnstile antenna is often referred to as ''crossed dipoles''. The antenna can be used in two possible modes. In ''normal mode'' the antenna radiates horizontally polarized radio waves perpendicular to its axis. In ''axial mode'' the antenna radiates circularly polarized radiation along its axis. ==History== The turnstile antenna was invented by George Brown in 1935〔 and described in scholarship in 1936. The patent history reveals the popularity of the turnstile antenna over the years. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Turnstile antenna」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.