Polarisation control of a loop antenna by PIN diodes

Author

Hiraguri, T. ; Ojiro, Y. ; Hirasawa, K. ; Shouno, K.

Author_Institution

Sch. of Syst. & Inf. Eng., Univ. of Tsukuba, Tsukuba Ibaraki

Volume

1

Issue

3

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

592

Lastpage

596

Abstract

A wire loop antenna with two electronic switches is introduced to control polarisation (left-hand, right-hand or linear polarisation). The loop is fed through an electromagnetically coupled monopole antenna. The loop and the monopole are located on a ground plane. The switching circuit with PIN diodes is installed near the feed point of the monopole to obtain symmetric radiation patterns. Good axial ratio and impedance characteristics are obtained. The experimental results show the capability of the polarisation control by electronic switches

Keywords

UHF antennas; antenna feeds; antenna radiation patterns; electric impedance; electromagnetic wave polarisation; loop antennas; monopole antennas; p-i-n diodes; switching circuits; wire antennas; 1.5 GHz; PIN diodes; axial ratio characteristics; circular polarisation; electromagnetically coupled monopole antenna feed; electronic switches; input impedance characteristics; left-hand polarisation; linear polarisation; polarisation control; right-hand polarisation; switching circuit; symmetric radiation patterns; wire loop antenna;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20060145

Filename

4232450