Microstrip Patch Antenna With Defected Ground Structure for Cross Polarization Suppression

作者：Debatosh Guha, Manotosh Biswas, Yahia M. M. Antar · 发表于：IEEE Antennas and Wireless Propagation Letters · 年份：2005 · DOI：10.1109/lawp.2005.860211 · 被引用次数：320 · 研究领域：Antenna Design and Analysis、Advanced Antenna and Metasurface Technologies、Microwave Engineering and Waveguides

A defected ground structure (DGS) is proposed to reduce the cross-polarized (XP) radiation of a microstrip patch antenna. The proposed DGS pattern is simple and easy to etch on a commercial microstrip substrate. This will only reduce the XP radiation field without affecting the dominant mode input impedance and co-polarized radiation patterns of a conventional antenna. The new concept has been examined and verified experimentally for a particular DGS pattern employing a circular patch as the radiator. Both simulation and experimental results are presented.