Low-profile design of dual-frequency and dual-polarised triangular microstrip antennas

Author

Row, J.-S. ; Lin, K.-W.

Author_Institution

Dept. of Comput. & Commun. Eng., Chien Kuo Inst. of Technol., Chang-Hua, Taiwan

Volume

40

Issue

3

fYear

2004

Firstpage

156

Lastpage

157

Abstract

A single-feed triangular microstrip patch antenna that can be operated at two distinct resonant modes is proposed. The two resonant modes can radiate an omnidirectional dipole-like pattern with linear polarisation and a broadside pattern with circular polarisation, respectively. To achieve the required frequency ratio of the two operating frequency bands, several designs of the proposed antennas with different substrate thickness and patch sizes are studied. In addition, these designs can easily obtain a 50 Ω input impedance without any additional matching circuit. Details of the antenna design and obtained performance are presented.

Keywords

antenna feeds; antenna radiation patterns; broadband antennas; microstrip antennas; polarisation; broadside pattern; circular polarisation; dual frequency triangular microstrip antenna; dual polarised triangular microstrip antenna; input impedance; linear polarisation; low profile antenna design; matching circuit; omnidirectional dipole; operating frequency bands; resonant modes; single feed triangular microstrip patch antenna;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el:20040122

Filename

1267511