A dual-band cavity-backed single arm square spiral slot antenna

Author

Shi, Song ; Hirasawa, Kazuhiro ; Chen, Zhi Ning

Author_Institution

Inst. of Inf. Sci. & Electron., Tsukuba Univ., Ibaraki, Japan

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

191

Lastpage

194

Abstract

A dual-band cavity-backed single arm square spiral slot antenna is presented and investigated by using the generalized network formulation based on the equivalence principle. By applying the method of moments, the magnetic current including the effect of the cavity is obtained for a thin single arm square spiral slot. The feed point is set at the outer turn of the single arm square spiral slot to get a dual band operation. The VSWR bandwidths (≤2) of 5.0% and 5.8% have been obtained for the low and high band resonances, respectively. The way of increasing the VSWR bandwidth has been discussed.

Keywords

method of moments; multifrequency antennas; slot antennas; spiral antennas; VSWR bandwidths; antenna structure; cavity effect; dual band operation; dual-band cavity-backed spiral slot antenna; equivalence principle; high band resonances; magnetic current; method of moments; network formulation; rectangular cavity; single arm square spiral slot antenna; Bandwidth; Dual band; Feeds; Frequency; Magnetic separation; Moment methods; Resonance; Satellite antennas; Slot antennas; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Computational Electromagnetics and Its Applications, 1999. Proceedings. (ICCEA '99) 1999 International Conference on

Print_ISBN

0-7803-5802-3

Type

conf

DOI

10.1109/ICCEA.1999.825102

Filename

825102