Monopole Slotted Patch Antenna for Microwave Communication

A single layer monpole slotted patch antenna is thoroughly simulated in this paper. Resonant frequency has been reduced drastically by cutting three equal slots which are same hexagonal structure at the upper right, upper left, lower left corner and a circle at the center from the conventional microstrip patch antenna. It is shown that the simulated results are in acceptable agreement. More importantly, it is also shown that the differentially-driven microstrip antenna has higher gain of simulated 3.50 dBi at 9.75GHz and -0.79 dBi at 13.57GHz and beamwidth of simulated 162.96 at 9.75GHz and 123.09 at 13.57GHz of the single-ended microstrip antenna. Simulated antenna size has been reduced by 51.33% with an increased frequency ratio when compared to a Conventional microstrip patch antenna.