Gain and bandwidth improvement of an aperture coupled cylindrical dielectric resonator antenna using an EBG structure

Author

Coulibaly, Yacouba ; Denidni, Tayeb A.

Author_Institution

INRS, Univ. de Quebec, Montreal, QC, Canada

fYear

2009

fDate

1-5 June 2009

Firstpage

1

Lastpage

4

Abstract

In this paper, a new technique for the bandwidth and gain enhancement of dielectric resonator antennas using a cylindrical electromagnetic band gap (EBG) structure has been proposed and demonstrated numerically. An aperture coupling scheme has been used to enable the isolation of the microstrip feed and the antenna. The EBG structure is based on the mushroom-like structure with a circular symmetry. It is composed of a periodic structure of metallic rings and of a periodic structure of vias. The periods of these two structures have been optimized using a full wave method to maximize the antenna gain. Numerical results have been presented showing that a gain enhancement of 6 dB and an impedance bandwidth of 24% are achieved with the new substrate.

Keywords

antenna feeds; aperture-coupled antennas; dielectric resonator antennas; microstrip antennas; periodic structures; photonic band gap; EBG structure; antenna gain enhancement; aperture coupled antenna; bandwidth enhancement; circular symmetry; cylindrical dielectric resonator antenna; electromagnetic band gap; gain 6 dB; metallic rings; microstrip feed; mushroom-like structure; periodic structure; Antenna feeds; Aperture antennas; Aperture coupled antennas; Bandwidth; Dielectric resonator antennas; Impedance; Metamaterials; Microstrip antennas; Optimization methods; Periodic structures;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE

Conference_Location

Charleston, SC

ISSN

1522-3965

Print_ISBN

978-1-4244-3647-7

Type

conf

DOI

10.1109/APS.2009.5171985

Filename

5171985