Title :
Study on Sequential Feeding Networks for Subarrays of Circularly Polarized Elliptical Dielectric Resonator Antenna
Author :
Yang, Shing-Lung Steven ; Chair, Ricky ; Kishk, Ahmed A. ; Lee, Kai-Fong ; Luk, Kwai-Man
Author_Institution :
Dept. of Electron. Eng., City Univ. of Hong Kong
Abstract :
Circularly polarized (CP) dielectric resonator antenna (DRA) subarrays have been numerically studied and experimentally verified. Elliptical CP DRA is used as the antenna element, which is excited by either a narrow slot or a probe. The elements are arranged in a 2 by 2 subarray configuration and are excited sequentially. In order to optimize the CP bandwidth, wideband feeding networks have been designed. Three different types of feeding network are studied; they are parallel feeding network, series feeding network and hybrid ring feeding network. For the CP DRA subarray with hybrid ring feeding network, the impedance matching bandwidth (S11<-10 dB) and 3-dB AR bandwidth achieved are 44% and 26% respectively
Keywords :
antenna arrays; antenna feeds; broadband antennas; dielectric resonator antennas; electromagnetic wave polarisation; impedance matching; antenna element; circular polarization; dielectric resonator antenna subarray; elliptical CP DRA; hybrid ring feeding network; impedance matching; wideband feeding network; Antenna feeds; Bandwidth; Broadband antennas; Dielectric resonator antennas; Geometry; Log periodic antennas; Optical polarization; Probes; Receiving antennas; Satellite antennas; Circular polarization (CP); dielectric resonator antennas (DRAs); wideband antenna arrays;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.889819
