This article embodies the design and simulation of defected ground microstrip patch antenna with reconfigurable Hexa-band characteristics. Three PIN diodes are used in between two strips to perform the switching action and make the antenna resonates at six frequencies i.e. 1.09 GHz,1.6 GHz,1.8 GHz,3.05 GHz, 3.2 GHz and 4.6 GHz with the bandwidth of 250 MHz, 1360 MHz, 840 MHz, 810 MHz, 870MHz and 800MHz respectively. The maximum peak gain of 9.23 dBi has been obtained at 3.2 GHz resonating frequency. Designing and simulation of the proposed structure have been carried out by means of HFSS software (v.13). Due to a wide range of frequency reconfigurable (1–5 GHz) characteristics, this structure is extremely suitable for multiband wireless portable devices