Theoretical and experimental investigations on rectangular dielectric resonator antennas

Author

Mongia, Rajesh Kumar ; Ittipiboon, Apisak

Author_Institution

COMDEV Ltd., Cambridge, Ont., Canada

Volume

45

Issue

9

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

1348

Lastpage

1356

Abstract

Theoretical and experimental investigations on rectangular dielectric resonator antennas having a value of ε_r, in the range of 10 to 100 are reported. The resonant frequencies and radiation Q-factors of the lowest order “magnetic-dipole” modes are derived on the basis of a first-order theory. The accuracy of the model in predicting the resonant frequency and radiation Q-factor is verified by comparison with results of a rigorous theory and experiments. Various feeds for the antennas such as probe, microstrip slot, and microstrip line are described. Measured radiation patterns are shown and the effect of feed and mode degeneracy on the cross-polarisation levels is discussed

Keywords

Q-factor; antenna feeds; antenna radiation patterns; antenna testing; dielectric devices; dielectric resonators; microstrip lines; permittivity; probes; antenna feeders; cross-polarisation levels; experiment; first-order theory; magnetic dipole modes; measured radiation patterns; microstrip line; microstrip slot; mode degeneracy; model accuracy; permittivity; probe; radiation Q-factor; rectangular dielectric resonator antennas; resonant frequencies; Antenna feeds; Antenna measurements; Antenna theory; Dielectric resonator antennas; Microstrip antennas; Predictive models; Probes; Q factor; Resonant frequency; Slot antennas;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.623123

Filename

623123