Title :
Theoretical and experimental investigations on rectangular dielectric resonator antennas
Author :
Mongia, Rajesh Kumar ; Ittipiboon, Apisak
Author_Institution :
COMDEV Ltd., Cambridge, Ont., Canada
fDate :
9/1/1997 12:00:00 AM
Abstract :
Theoretical and experimental investigations on rectangular dielectric resonator antennas having a value of εr, 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;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
