Title :
Analysis of U-slot-excited dielectric resonator antennas with a backing cavity
Author :
Lam, H.Y. ; Leung, K.W.
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon
Abstract :
The U-slot-excited dielectric resonator antenna (DRA) with a backing cavity is analysed theoretically and experimentally. It is found that the U-slot can be used to enhance the impedance bandwidth or to produce circularly polarised (CP) fields. By solving the equivalent magnetic current in the slot using the method of moments, the return loss, axial ratio and radiation pattern are obtained. The effects of changing the U-slot parameters on the antenna characteristics are investigated
Keywords :
antenna radiation patterns; dielectric resonator antennas; electromagnetic wave polarisation; matrix algebra; method of moments; slot antennas; U-slot-excited dielectric resonator antennas; axial ratio; backing cavity; circularly polarised fields; equivalent magnetic current; impedance bandwidth; method of moments; radiation pattern; return loss;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:20050179
