…For this reason, the conductor wire is stretched to give it a spread, but even so, the efficiency of radiation is generally low. Antennas named according to their shape include umbrella antennas, T-shaped antennas, inverted L-shaped antennas, and vertical antennas. All of them are grounded, with a power supply terminal between the bottom end of the conductor wire and the ground wire. … *Some of the terminology explanations that mention "umbrella antennas" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…そのため,広がりをもたせるように導線を張って構成しているが,それでも放射の効率は一般に低い。形状によって命名されたものに,傘形アンテナ,T形・逆L形アンテナ,垂直アンテナなどがある。いずれも接地形で,導線の下端と接地線の間に給電端子が設けられている。… ※「傘形アンテナ」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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