HORN ANTENNA

PROBLEM TO BE SOLVED: To improve a main null level in vertical surface directivity by adding a simple structure in a horn antenna. SOLUTION: A folded portion directed to the outside of an opening is provided in a terminal portion crossing an electric field surface at the edge of the opening of the h...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KAZAMA YASUHIRO, NIHEI KATSUTOSHI, SHIROMIZU TETSUYA, ISHIZAKI SHOJI, MATSUMOTO SHIGERU, WADA TAKENAO
Format:	Patent
Sprache:	eng
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS ELECTRICITY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To improve a main null level in vertical surface directivity by adding a simple structure in a horn antenna. SOLUTION: A folded portion directed to the outside of an opening is provided in a terminal portion crossing an electric field surface at the edge of the opening of the horn antenna. In a terminal part of the folded portion, a terminal current flows and a diffracted wave is generated. This diffracted wave is interfered and combined, as a secondary wave source, with main radiation from a horn, thereby reducing a level drop at a certain elevation angle in vertical surface directional property when there is no folded portion. COPYRIGHT: (C)2006,JPO&NCIPI