A simple EBG structure for dual-band circularly polarized antennas with high directivity

Author

Zeb, Basit Ali ; Esselle, Karu P.

Author_Institution

Dept. of Electron. Eng., Macquarie Univ., Sydney, NSW, Australia

fYear

2012

fDate

8-14 July 2012

Firstpage

1

Lastpage

2

Abstract

A simple electromagnetic band gap (EBG) structure is used as a superstrate to enhance the directivity of circularly-polarized (CP) corner-truncated microstrip patch antennas in two frequency bands. The EBG structure is composed of two simple unprinted identical dielectric slabs and its symmetry is exploited to transform the less directive CP beam of the patch to a highly directive CP beam. Computed results confirm the concept of this simple and novel dual-band circularly polarized EBG resonator antenna and its ability to generate CP with good axial ratio in two discrete frequency bands.

Keywords

directive antennas; electromagnetic wave polarisation; microstrip antennas; multifrequency antennas; photonic band gap; resonators; CP corner-truncated microstrip patch antenna; EBG structure; axial ratio; directive CP beam; directivity enhancement; discrete frequency bands; dual-band circularly-polarized resonator antennas; electromagnetic band gap structure; superstrate; unprinted dielectric slabs; Dielectric resonator antennas; Directive antennas; Feeds; Metamaterials; Periodic structures; Resonant frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE

Conference_Location

Chicago, IL

ISSN

1522-3965

Print_ISBN

978-1-4673-0461-0

Type

conf

DOI

10.1109/APS.2012.6348941

Filename

6348941