A reconfigurable microstrip antenna with defected ground structure for radio applications

Abstract

A design of circular patch antenna having elliptical slot with defected ground substrate is being presented. It is designed for radio application. The antenna is reconfigurable, and we can switch between the C-band and X-band applications depending on the switching of diodes. Broadband applications in C-band and RADAR applications in the X-band can be switched. It is observed through analysis that dimensions of the antenna and slots are key factors for improving bandwidth of the geometry, here the antenna is fabricated on FR4 substrate with an elliptical slot and defected ground structure whose dimensions are optimized to get the best results and further the antenna is made reconfigurable.