%0 Journal Article
%T Wideband Cavity-Backed Crossed Dipoles for Circular Polarization
%A Xue Bai
%A Shi-Wei Qu
%J PIER     Letters
%D 2013
%I EMW Publishing
%R 10.2528/PIERL12101908
%X A novel circularly polarized cavity-backed antenna (CBA) excited by crossed bowtie dipoles is presented in this paper. It is fed by a transition from a microstrip line to double-slot lines. The crossed dipoles consist of a top-loaded triangular and a filleted rhombic to achieve the required input impedance relations for circularly polarized radiation. After optimization, a simulated 3-dB axial-ratio bandwidth of 50% and a broadside gain in a range of 7 to 9 dBi are achieved while the standing wave ratio is kept below 2.
%U http://www.jpier.org/pierl/pier.php?paper=12101908