This paper describes compatibility between EIRP mask by FCC and radiating spectrum using band pass tapered slot antenna (BPTSA) on UWB impulse radio (IR) application. The study proposes some techniques to add band pass characteristic on the antenna and considers the mask compatibility by actual signal transmitting and receiving. We focus the cut off characteristic in the higher frequency region than 10.6GHz. The features of the test antennas on the experiments are described. It is revealed that to satisfy the spectrum mask is possible by restricting the bandwidth of the antenna.