Broadband patch antenna with a T-shaped probe

Author

Mak, C.L. ; Lee, K.F. ; Luk, K.M.

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong

Volume

147

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

73

Lastpage

76

Abstract

A single-layered broadband patch antenna with a T-shaped feeding probe is studied experimentally. With a supporting foam substrate of thickness around 0.1 /spl lambda//sub 0/, a rectangular patch antenna with bandwidth (SWR/spl les/2) of 40%, and average gain of 7 dBi is designed. Such wideband and high gain performance is confirmed by simulation using Ensemble. Furthermore, by introducing a second identical T-probe, which is fed out of phase with the original probe, the cross-polarisation of the H-plane is reduced substantially. The patch antenna with 2 T-shaped probes also maintains an impedance bandwidth (SWR/spl les/2) of 41% and average gain of 6.5 dBi. Stable radiation patterns are observed across the passbands.

Keywords

microstrip antennas; 6.5 dB; 7 dB; Ensemble; H-plane cross-polarisation; SWR; T-shaped feeding probe; average gain; bandwidth; foam substrate thickness; high gain performance; impedance bandwidth; passbands; rectangular patch antenna; simulation; single-layered broadband patch antenna; stable radiation patterns;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:20000264

Filename

842164