WAVEGUIDE ANTENNA AND ANTENNA DEVICE

To achieve a waveguide antenna with good antenna characteristics, even if a circular waveguide is used as a propagation path for high-frequency signals.SOLUTION: A waveguide antenna 20 includes a conductor housing and slot openings 31-34. The housing has a cross-section of a circular shape or a regu...

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Bibliographische Detailangaben
Hauptverfasser:	ISHINO SHOTARO, KIN KOJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ANTENNAS, i.e. RADIO AERIALS BASIC ELECTRIC ELEMENTS ELECTRICITY RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE WAVEGUIDES
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	To achieve a waveguide antenna with good antenna characteristics, even if a circular waveguide is used as a propagation path for high-frequency signals.SOLUTION: A waveguide antenna 20 includes a conductor housing and slot openings 31-34. The housing has a cross-section of a circular shape or a regular polygon with an even number of sides and has a tubular shape having a diameter determined by an in-tube wavelength of a high-frequency signal in TM01 mode or TM11 mode. The slot openings 31-34 are formed in the housing and have a length according to the wavelength of the high-frequency signal. An angle formed by a length direction and a traveling direction of the high-frequency signal is acute.SELECTED DRAWING: Figure 1 【課題】円形導波管を高周波信号の伝搬経路に採用しても、アンテナ特性の良好な導波管アンテナを実現する。【解決手段】導波管アンテナ２０は、導体の筐体、および、スロット開口部３１−３４を備える。筐体は、断面が円形または辺の数が偶数の正多角形であり、ＴＭ０１モードまたはＴＭ１１モードの高周波信号の管内波長によって決定される径を有する筒状である。スロット開口部３１−３４は、筐体に形成され、高周波信号の波長の応じた長さを有し、長さの方向と高周波信号の進行方向との成す角が鋭角である。【選択図】図１