Design of Defected Ground Structure in Planar Array for Cross Polarization Reduction

Abstract

A simple configuration of defected ground structure is proposed for suppressing the H plane cross polarization in a line fed planar array. A 1x2 and a $2\times 2$ array having defects in ground plane have been designed in X-band. The designs show around 10-14dB suppression in the H-plane cross polarization level with improved gain. The design and simulation process is carried out by using AWR simulator.