Title :
Circularly polarized circular sector dielectric resonator antenna
Author :
Tam, Matthew T K ; Murch, Ross D.
Author_Institution :
Dept. of Electr. & Eng., Hong Kong Univ. of Sci. & Technol., Clear Water Bay, Hong Kong
fDate :
1/1/2000 12:00:00 AM
Abstract :
A circular sector dielectric resonator antenna (DRA) with circular polarization and a single feed is investigated and demonstrated. The design utilizes the radius to height ratio and feed position of the circular sector DRA to excite two resonant modes that are spatially orthogonal in polarization and in phase quadrature. Experimental results are provided for the design and these demonstrate that the circular sector DRA produces circular polarized radiation with axial ratio less than 3 dB over a 10% bandwidth
Keywords :
antenna radiation patterns; dielectric resonators; electromagnetic wave polarisation; microwave antennas; 2.71 GHz; DRA; axial ratio; circular polarization; circular sector dielectric resonator antenna; circularly polarized radiation; phase quadrature; radius to height ratio; resonant modes; single feed; spatially orthogonal modes; Antenna feeds; Bandwidth; Couplings; Dielectric materials; Dielectric resonator antennas; Geometry; Hardware; Polarization; Resonance; Resonant frequency;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
