Theoretical investigation of aperture-coupled rectangular dielectric resonator antenna

Author

Antar, Y.M.M. ; Fan, Z.

Author_Institution

Dept. of Electr. & Comput. Eng., R. Mil. Coll. of Canada, Kingston, Ont., Canada

Volume

143

Issue

2

fYear

1996

fDate

4/1/1996 12:00:00 AM

Firstpage

113

Lastpage

118

Abstract

Characteristics of an aperture-coupled rectangular dielectric resonator are investigated theoretically. A model based on the modal expansion method and the spectral domain approach is developed. Numerical results for Q factors, radiation efficiency and radiation patterns are presented for various values of material and structural parameters of the resonator, and it is found that by suitable choice of these parameters high efficiency, wide bandwidth and broadside radiation patterns can be achieved for the TE₁₁₁^y mode. Effects of aperture dimensions, aperture displacement and open-stub length on input impedances are also discussed. Results for return losses and radiation patterns are compared with available measured data, showing reasonable agreement. The results presented should be useful for the design of this type of new antenna

Keywords

Q-factor; antenna radiation patterns; antenna theory; dielectric resonators; electric impedance; microwave antennas; spectral-domain analysis; Q factor; aperture dimensions effects; aperture displacement effects; aperture-coupled rectangular dielectric resonator; broadside radiation patterns; dielectric resonator antenna; input impedance; modal expansion method; numerical results; open-stub length effects; radiation efficiency; radiation patterns; return losses; spectral domain approach; wide bandwidth;

fLanguage

English

Journal_Title

Microwaves, Antennas and Propagation, IEE Proceedings

Publisher

iet

ISSN

1350-2417

Type

jour

DOI

10.1049/ip-map:19960269

Filename

494665