Comparative study on the mutual coupling between different sized cylindrical dielectric resonators antennas and circular microstrip patch antennas

Author

Chair, Ricky ; Kishk, Ahmed A. ; Lee, Kai-Fong

Author_Institution

Dept. of Electr. Eng., Univ. of Mississippi, University, MS, USA

Volume

53

Issue

3

fYear

2005

fDate

3/1/2005 12:00:00 AM

Firstpage

1011

Lastpage

1019

Abstract

A systematic comparative study on the mutual coupling (S₂₁) between dielectric resonator antennas (DRAs) and microstrip patch antennas is presented. The mutual coupling between two cylindrical probe-fed DRAs is studied for different radius to height (a/L) ratios. It is found that the mutual coupling decreases with the radius to height ratio. Comparison between mutual coupling of probe-fed cylindrical DRAs and circular microstrip patch antennas with different dielectric substrates are also studied. The mutual coupling between DRAs is 2 dB stronger than between microstrip patch antennas when the patch is etched on a dielectric substrate of a dielectric constant close to the permittivity of the DRA. The mutual coupling of the circular patch antennas reduces with the dielectric constant of the substrate.

Keywords

antenna feeds; antenna radiation patterns; dielectric resonator antennas; electromagnetic coupling; microstrip antennas; permittivity; antenna radiation pattern; circular microstrip antennas; cylindrical probe-fed DRA; dielectric resonator antennas; dielectric substrates; microstrip patch antennas; mutual coupling; Bandwidth; Dielectric constant; Dielectric resonator antennas; Dielectric substrates; Geometry; Microstrip antennas; Microstrip resonators; Mutual coupling; Patch antennas; Permittivity; Dielectric resonator antennas (DRAs); microstrip antennas; mutual coupling;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2004.842682

Filename

1406232