The proposed antenna is designed with hexagonal shape. In this novel antenna at upper side L shaped Patch is connected to hexagonal patch by using one PIN diode (SMP 1320) and two square slots at two corners. Design frequency for this antenna is 5.2 GHz. The side length (a) of Hexagon decides the frequency of hexagonal patch antenna and to achieve expected frequency for this antenna a=9mm is selected. FR4 substrate is preferred. Frequency reconfiguration is done by making PIN diode ON & OFF. In OFF state, 5.2 GHz frequency is provided by antenna and -17.61 dB return loss with 5.8 antenna gain, 70 MHz bandwidth. In ON state, 3.61 GHz frequency is provided by antenna and -14.88 dB return loss with 3.2 antenna gain, 110 MHz bandwidth. Simulation is performed with HFSS software. For this antenna nearly similar simulation and testing results achieved.