Bandwidth Enhancement In Wireless Applications By Using H - Shape Slot Microstrip Aperture Coupled Antenna

In this paper a wideband dual polarized antenna is designed, manufactured and measured. Slot coupled patch antenna structure is considered in order to achieve the wideband characteristic. Although rectangular shaped slot coupled patch antennas are widely used in most of the applications, their utilization in dual polarized antenna structures is not feasible due to space limitation. For a rectangular slot, the parameter that effects the amount of coupling is the slot length. On the other hand when a Hshaped slot is considered, both the length of the center arm and the length of the side legs determine the coupling efficiency. This flexibility about the optimization parameters of the Hshaped slot makes it possible to position the two coupling slots within the boundaries of the patch antenna. In order to investigate the effects of slot and antenna dimensions on the bandwidth of the antenna, a parametric study is performed by HFSS simulator.