翻訳と辞書 Words near each other ・ Nulgupjisin ・ Nulhegan Band of the Coosuk Abenaki Nation ・ Nuli ・ Nuli Bolagh ・ Nuliajuk ・ Nulji of Silla ・ Nulka ・ Nulkaba, New South Wales ・ Null ・ Null (comics) ・ Null (computing) ・ Null (Foetus EP) ・ Null (Intronaut EP) ・ Null (mathematics) ・ Null (physics) ・ Null (radio) ・ Null (SQL) ・ Null allele ・ Null allomorph ・ Null and Void Ordinance ・ Null Bazaar ・ Null cell ・ Null character ・ Null cipher ・ Null coalescing operator ・ Null corrector ・ Null cycle ・ Null Device ・ Null device ・ Null distribution 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 Null (radio) ： ウィキペディア英語版 Null (radio) In radio electronics, a null is an area or vector in an antenna's radiation pattern where the signal cancels out almost entirely. This can be an advantage, as nulls in the horizontal plane can be used to protect other transmitters from interference. If not carefully planned however, nulls can unintentionally prevent reception of a signal. Null fill in the vertical plane is used to prevent this. Also, some directional antennas have very narrow, sharp nulls. These antennas when used for direction finding are aimed away from the signal of interest until the antenna's null is pointed at the signal, and the signal cannot be detected. ==See also== *Null vector 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「Null (radio)」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.