Transmission-line modelling of the cross-aperture-coupled circular polarised microstrip antenna

Author

Al-Jibouri, B. ; Vlasits, T. ; Korolkiewicz, E. ; Scott, S. ; Sambell, A.

Author_Institution

Sch. of Eng., Northumbria Univ., Newcastle-upon Tyne, UK

Volume

147

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

82

Lastpage

86

Abstract

A circular polarised antenna fed through a cross-aperture in a ground plane by means of a microstrip feed line is modelled, and an original analysis using a transmission-line method is presented. The field linkages from the feed to the slots and the slots to the antenna are modelled as voltage transformers, which are employed in the synthesis of the overall transmission-line model of the structure. This analysis allows for an efficient computational procedure to predict the input impedance of the structure. The application of a full wave simulation package and the experimental results obtained for the structure support the theory presented

Keywords

UHF antennas; antenna feeds; antenna theory; electric impedance; electromagnetic wave polarisation; microstrip antennas; transmission line theory; 2.25 to 2.7 GHz; cross-aperture-coupled circular polarised microstrip antenna; field linkages; full wave simulation package; input impedance; microstrip feed line; transmission-line modelling; voltage transformers;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:20000069

Filename

842166