Broadband beam scanning circularly-polarised leaky-wave antenna based on modified substrate integrated waveguide

Author

Jin, C. ; Mujumdar, Manisha ; Alphones, Arokiaswami

Author_Institution

Inst. of Microelectron., A*Star, Singapore, Singapore

Volume

49

Issue

5

fYear

2013

fDate

February 28 2013

Firstpage

316

Lastpage

318

Abstract

A high gain broadband beam scanning circularly-polarised (CP) leakywave antenna (LWA) is proposed based on a modified substrate integrated waveguide. The designed CP LWA has been fabricated and its performance measured. The reported antenna presents expected broadband matched impedance with a measured reflection coefficient |S₁₁| <;- 10 dB from 15.4 to 19 GHz. The radiation pattern was measured and the axial ratio of the antenna is within 3 dB from 15.9 to 17.2 GHz. The antenna exhibits continuous beam scanning from 35° at 15.5 GHz to 47° at 18 GHz according to the broadside with maximum gain of 12.3 dBi.

Keywords

antenna radiation patterns; broadband antennas; electromagnetic wave polarisation; electromagnetic wave reflection; impedance matching; leaky wave antennas; substrate integrated waveguides; CP LWA; axial ratio; broadband matched impedance; continuous beam scanning; frequency 15.4 GHz to 19 GHz; high gain broadband beam scanning circularly-polarised leaky-wave antenna; radiation pattern; reflection coefficient; substrate integrated waveguide;

fLanguage

English

Journal_Title

Electronics Letters

Publisher

iet

ISSN

0013-5194

Type

jour

DOI

10.1049/el.2013.0177

Filename

6473931