翻訳と辞書 Words near each other ・ J-line ・ J-List ・ J-Live ・ J-Mee Samuels ・ J-Melo ・ J-Men Forever ・ J-Min ・ J-Min discography ・ J-multiplicity ・ J-ok'el ・ J-P Mayer ・ J-P Wimille ・ J-PARC ・ J-PAS ・ J-Pilot ・ J-pole antenna ・ J-pop ・ J-Popcon ・ J-Ro ・ J-Roc (record producer) ・ J-Rock ・ J-Rocks ・ J-segment ・ J-Setting ・ J-SH04 ・ J-Son ・ J-Star ・ J-STARS ・ J-Stars Victory VS ・ J-structure Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク J-pole antenna ： ウィキペディア英語版 J-pole antenna The J-pole antenna, also called the Zepp' antenna (short for Zeppelin), and more properly known as the J antenna, was first invented by the Germans for use in their lighter-than-air balloons. Trailed behind the airship, it consisted of a single element, one half wavelength long radiator with a quarter wave parallel feedline tuning stub. This concept evolved to the J configuration by 1936 attaining the name ''J Antenna'' by 1943.〔 ==Characteristics== The J-pole antenna is an end-fed omnidirectional half-wave antenna that is matched to the feedline by a quarter wave parallel transmission line stub.〔 Matching to the feed-line is achieved by sliding the connection of the feedline back and forth along the stub until an impedance match is obtained.〔 Being a half-wave antenna, it provides a small gain over a quarter-wave ground-plane antenna. 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「J-pole 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.