Microstrip Antenna with Two Circular Grooves Corrugated in Ground Plane

In this paper we present a proposed design of microstrip antenna with enhanced gain and radiation pattern by two circular grooves corrugated ground plane instead of no grooved ground plane conventional aperture-coupled microstrip antenna. In the proposed antenna high gain is achieved by the constructive superposition of the electric fields radiated by the patch and grooves. The simulation shows that gain is increased by 1.03 dB and7.88dB .i.e.13.78dB.with respect to one groove corrugated antenna and conventional antenna.