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Printed hexagonal slot antenna with dual band stop characteristics for ultra wide band applications is presented in this paper. The basic antenna comprises U - shape radiating patch and ground plane with hexagonal slot. By proper alignment and use of hexagonal slot additional resonances and much wider impedance bandwidth is obtained. By embedding inverted L - shape parasitic stubs at the upper edge at the hexagonal slot,obtain the desired band rejection characteristics for WiMAX and WLAN respectively. The operating frequency of proposed antenna is r anged from 2.76~11.07 GHz w i th a dual band rejection from 3~4GHz (for WiMAX) and 5~6 GHz (for WLAN).The designed antenna is fabricated on a FR - 4 glass epoxy substrate having dielectric constant of 4.4 with overall dimensions of 28 x 28 x 1.6mm 3 . https://www.ijiert.org/paper-details?paper_id=140915