Broadband Archimedean spiral antenna above a loaded electromagnetic band gap substrate

Author

Schreider, L. ; Begaud, X. ; Soiron, M. ; Perpere, B. ; Renard, C.

Author_Institution

COMELEC Dept., Paris

Volume

1

Issue

1

fYear

2007

fDate

2/1/2007 12:00:00 AM

Firstpage

212

Lastpage

216

Abstract

The development of a low profile, lightweight, broadband spiral antenna for airborne applications is described. The use of an electromagnetic band gap substrate with loads as reflector for an Archimedean spiral antenna is proposed. A method based on a transmission line model is presented to design this loaded electromagnetic band gap substrate. Simulation and measurements results demonstrate the applicability of the concept. A good impedance matching as well as a good circular polarisation are achieved over a 10:1 frequency bandwidth. Finally, thickness and weight of this new antenna are greatly reduced and their performances are better compared with a conventional spiral antenna with unidirectional beam

Keywords

aircraft antennas; broadband antennas; electromagnetic wave polarisation; impedance matching; photonic band gap; reflector antennas; spiral antennas; substrates; airborne applications; broadband Archimedean spiral antenna; circular polarisation; impedance matching; loaded electromagnetic band gap substrate; reflector; transmission line model based method;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20050323

Filename

4126191