Title :
Circularly polarised dielectric resonator antenna excited by perturbed annular slot with backing cavity
Author :
Leung, K.W. ; Mok, S.K.
Author_Institution :
Dept. of Electron. Eng., Hong Kong Polytech., Kowloon, China
fDate :
7/19/2001 12:00:00 AM
Abstract :
The circularly polarised dielectric resonator antenna excited by a perturbed annular slot is investigated experimentally. A backing cavity is placed beneath the slot to block undesirable backside radiation. The effects of varying the slot on the return loss and axial ratio are discussed. The radiation patterns and antenna gain of the configuration are also presented
Keywords :
antenna feeds; antenna radiation patterns; aperture antennas; dielectric resonators; millimetre wave antennas; slot antennas; air gap problem; antenna gain; axial ratio; backing cavity; circularly polarised antenna; coaxial feed line; dielectric resonator antenna; ground plane; perturbed annular slot; radiation patterns; return loss;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20010658
