Title :
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
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;
Conference_Titel :
Universal Personal Communications. 1995. Record., 1995 Fourth IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-2955-4
DOI :
10.1109/ICUPC.1995.497073
