Multiport network description and radiation characteristics of coupled dielectric resonator antennas

Author

Junker, Gregory P. ; Kishk, Ahmed A. ; Glisson, Allen W.

Author_Institution

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

Volume

46

Issue

3

fYear

1998

fDate

3/1/1998 12:00:00 AM

Firstpage

425

Lastpage

433

Abstract

An efficient procedure is presented to investigate the mutual coupling effects and radiation characteristics of dielectric resonator (DR) antennas operating in an array environment. The procedure is based on the method of moments (MoM) as applied to a system of surface integral equations (SIEs) for the coupling of a dielectric body of revolution (BOR) to a nonBOR geometry. The antenna array elements are situated on a ground plane and fed by coaxial probes. Multiport network impedance parameters computed by this method show good agreement with those obtained by measurement. Computed driving point impedances are given for arrays exhibiting optimum pattern performance in terms of low cross polarization and good pattern symmetry

Keywords

antenna radiation patterns; dielectric resonators; electric impedance; integral equations; linear antenna arrays; method of moments; multiport networks; antenna array elements; array; coaxial probe; coupled dielectric resonator antennas; cross polarization; dielectric body of revolution; driving point impedances; ground plane; method of moments; multiport network description; multiport network impedance parameters; mutual coupling; nonBOR geometry; pattern performance; pattern symmetry; radiation characteristics; surface integral equations; Antenna arrays; Coaxial components; Computer networks; Dielectric resonator antennas; Geometry; Integral equations; Moment methods; Mutual coupling; Probes; Surface impedance;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.662662

Filename

662662