Broadband CPW‐FED slot antenna with circular polarization

Abstract

Abstract A novel broadband circularly polarized slot antenna is presented in this article. The antenna is fed by a step‐shaped coplanar waveguide (CPW). A central symmetry slot is etched in the center of the patch to create circularly polarized wave. A rectangle slot beside the CPW is applied to improve the impedance characteristic of the antenna. The presented antenna has axial ratio and impedance bandwidth of around 33.3 and 71%. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2111–2114, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25363