Broadband circularly polarized wide‐slot antenna

Abstract

Abstract A new broadband single‐fed circularly polarized (CP) wide‐slot antenna is presented in the letter. The antenna is composed of a wide‐slot, with a T‐shaped stub and a microstrip T‐junction. The CP operation is realized by the interaction from the T‐shaped stub on the wide‐slot and the T‐junction. The antenna has been investigated numerically and experimentally. Measured result shows that the antenna has an impedance bandwidth of 58% and a 3‐dB bandwidth of axial ratio of 22.2%. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1005–1007, 2007; Published online in Wiley InterScience (www.interscience.wiley.com).DOI 10.1002/mop.22337