A novel approach of improving the gain of a UWB antenna is presented in this paper. The antenna consists of a rectangular patch imprinted on FR4 substrate. The rectangular patch has one round cut at each corner and edge with one slot in the ground plane. The antenna has a simulated bandwidth with return loss (RL) >= 10dB is 3-12 GHz. By introducing slots in the patch and feed, notching at X- band is achieved. The simulated results of the proposed antenna show a higher gain at the pass-bands while a sharp drop at the rejected bands. The radiation pattern obtained for this proposed antenna is Bi-directional. The design of the antenna and it’s behaviour over different frequency ranges is analyzed using high frequency structure simulator (HFSS).