Mushroom like EBG to improve the Gain and Broadband of Patch Antenna for Ku-Band Satellite Application

Abstract

In order to increase the gain of the patch antenna , a Mushroom-like EBG(Electromagnetic Band Gap ) structure is used . EBG structures enhance the patch antenna’s characteristics of directivity, bandwidth and efficiency . Initially, we determined frequency band gap characteristics of mushroom-like EBG unit cell value by using ANSYS software . The periodic arrangement of such mushroom-like EBG structure was not limited by any inter connecting microstrip lines . Different patches of similar configuration were arranged in a pattern to better improvement in an antenna performance . The final design shows an effective increase in Gain . The current distributions on those metal patches are nearly uniform, allowing for substantial gains throughout the working bandwidth. Keywords—EBG , mushroom-like EBG, ANSYS software ,Broadband .