A spiral antenna array using a triplate transmission line with circular apertures

Author

Nakano, H. ; Hirokawa, G. ; Yamauchi, J. ; Hirose, K.

Author_Institution

Coll. of Eng., Hosei Univ., Tokyo, Japan

fYear

1992

fDate

18-25 June 1992

Firstpage

151

Abstract

Three types of spiral antennas constructed from a triplate transmission line are investigated for use as an array antenna element. The radiation characteristics were measured over a frequency band of 11.5 GHz to 12.2 GHz. Based on the investigation, an array antenna consisting of four spiral antennas was fabricated. The array shows a gain of 13.7 dB with a radiation efficiency of 73%. The bandwidth for a 3-dB axial ratio criterion is 2.6%, over which the return loss is observed to be less than -14 dB.<>

Keywords

microwave antenna arrays; transmission lines; -14 dB; 11.5 to 12.2 GHz; 13.7 dB; 3-dB axial ratio; 73 percent; array antenna element; bandwidth; circular apertures; gain; radiation efficiency; return loss; spiral antenna array; triplate transmission line; Antenna arrays; Antenna measurements; Antenna radiation patterns; Aperture antennas; Coplanar transmission lines; Coplanar waveguides; Frequency response; Spirals; Transmission line antennas; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1992. AP-S. 1992 Digest. Held in Conjuction with: URSI Radio Science Meeting and Nuclear EMP Meeting., IEEE

Conference_Location

Chicago, IL, USA

Print_ISBN

0-7803-0730-5

Type

conf

DOI

10.1109/APS.1992.221979

Filename

221979