Slot coupling in a radial line slot antenna for 12-GHz band satellite TV reception

Author

Sasazawa, Hideo ; Oshima, Yasuhide ; Sakurai, Kimio ; Ando, Makoto ; Goto, Naohisa

Author_Institution

Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan

Volume

36

Issue

9

fYear

1988

fDate

9/1/1988 12:00:00 AM

Firstpage

1221

Lastpage

1226

Abstract

Coupling between slots and slow-wave waveguides in a radial line slot antenna (RLSA) is discussed. Field analysis of the waveguide with a surface impedance wall revealed a considerable change in the propagation constant due to coupling. Experiments were performed to confirm these results and to obtain the surface impedance for actual slots. The change in the propagation constant caused the antenna efficiency to exhibit its maxima at two separated frequencies. An efficiency of 60% and 50% was measured at 11.6 and 12.4 GHz, respectively, which confirms a theoretical prediction. This effect suggests the possibility of broadband planar antennas

Keywords

direct broadcasting by satellite; microwave antennas; receiving antennas; television antennas; television reception; waveguide antennas; 11.6 GHz; 12 GHz; 12.4 GHz; 50 percent; 60 percent; DBS; broadband planar antennas; propagation constant; radial line slot antenna; satellite TV reception; slot coupling; slow-wave waveguides; surface impedance wall; Antenna measurements; Antennas and propagation; Couplings; Frequency; Planar arrays; Propagation constant; Slot antennas; Surface impedance; Surface waves; Waveguide transitions;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.8599

Filename

8599