An azimuthal multibeam radial line slot antenna for mobile satellite communication

Author

Takada, Jun-ichi ; Yamamoto, Tatsuya ; Ando, Makoto ; Goto, Naohisa

Author_Institution

ICCST, Tokyo Inst. of Technol., Japan

fYear

1995

Firstpage

571

Lastpage

574

Abstract

This paper presents a circularly polarized azimuthal multibeam radial line slot antenna (AM-RLSA) for mobile satellite communication. A novel feeding structure is proposed to switch the beam azimuth. Only by switching the feeding circuit, it can radiate several beams. The beam elevation angles for all these beams are equal to the elevation angle for the geostational satellite, while the beam azimuth angles are evenly separated. Numerical examples are presented for the coverage elevation angle θ=25°~55°, and the gain of 4.5 dBi is obtained by a four-beam configuration

Keywords

antenna feeds; electromagnetic wave polarisation; mobile satellite communication; multibeam antennas; satellite antennas; slot antennas; 4.5 dB; azimuthal multibeam radial line slot antenna; beam azimuth angles; beam elevation angles; circularly polarized radial line slot antenna; coverage elevation angle; feeding circuit switching; feeding structure; four-beam configuration; gain; geostationary satellite; mobile satellite communication; Azimuth; Feeds; Mobile antennas; Polarization; Probes; Satellite antennas; Satellite broadcasting; Satellite communication; Slot antennas; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Universal Personal Communications. 1995. Record., 1995 Fourth IEEE International Conference on

Conference_Location

Tokyo

Print_ISBN

0-7803-2955-4

Type

conf

DOI

10.1109/ICUPC.1995.497073

Filename

497073