Title :
Wideband Circularly Polarized Dielectric Resonator Antenna
Author :
Khoo, Kah-Wee ; Guo, Yong-Xin ; Ong, Ling Chuen
Author_Institution :
Nat. Univ. of Singapore, Singapore
fDate :
7/1/2007 12:00:00 AM
Abstract :
A circularly polarized quadruple strip feed cylindrical dielectric resonator antenna utilizing a pair of 90deg hybrid couplers is investigated experimentally. The antenna is shown to deliver an impedance bandwidth (S11 < -10 dB) of 34.5%, from 1.75 to 2.48 GHz, and an axial-ratio bandwidth (AR < 3 dB) of 25.9%, from 1.65 to 2.14 GHz. The gain and radiation patterns are found to be stable within the passband.
Keywords :
antenna radiation patterns; broadband antennas; strip line resonators; axial-ratio bandwidth; dielectric resonator antenna; impedance bandwidth; passband; radiation patterns; strip feed cylindrical resonator antenna; wideband circularly polarized antenna; Antenna feeds; Antenna radiation patterns; Bandwidth; Broadband antennas; Couplers; Dielectric resonator antennas; Microstrip antennas; Optical polarization; Permittivity; Strips; Circular polarization; dielectric resonator antennas (DRAs); wideband antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2007.900241
