Aperture-Coupled Microstrip Antenna with Circular Grooves Corrugated Ground Plane.

A new kind of microstrip antenna with enhanced gain and radiation pattern is presented in this paper. The flat ground plane of conventional aperture-coupled microstrip antenna is substituted by the circular corrugated plane in the e proposed antenna with high gain achieved by the constructive superposition of the electric fields radiated by the patch and grooves. The simulation shows that gain are increased by 6.85 dB.