In this paper, the wideband microstrip antennas for the PCS & IMT-200O dual band are studied. Experimental and simulation results on the dual band antenna are presented. Simulation results are in good agreement with measurements. The experimental and simulation results confirm the wideband characteristics of the antenna. The studied antenna satisfies the wideband characteristics that are required characteristics for above 420 MHz impedance bandwidth for the PCS & IMT-2OO0 dual band antenna. In this paper, through the designing of a dual band antenna, we have presented the availability for PCS & IMT-20O0 base station antenna.