Summary
International Symposium on Antennas and Propagation
2014
Session Number:FR4C
Session:
Number:FR4C_04
Wideband Circularly Polarized Slotted-Patch Antenna with a Reflector
Jhih-Ming Chen, Jia-Fu Tsai, Jeen-Sheen Row,
pp.-
Publication Date:2014/12/2
Online ISSN:2188-5079
Summary:
A design for wideband circularly-polarized (CP) antennas with unidirectional radiation is described. The antenna structure is mainly composed of a rectangular slotted patch and a metallic reflector. First, the CP design for the stand-alone slotted patch antenna is investigated, and a 3dB-axial-ratio bandwidth of 53 % is obtained. Then, the metallic reflector is placed at the rear of the slotted patch to generate unidirectional radiation. Experimental results demonstrate that the slotted patch antenna with a reflector has almost the same CP bandwidth as the stand-alone slotted patch antenna, and it has good impedance matching as well as stable radiation patterns across the CP operating frequencies.