A Ultra WideBand(UWB) bnadpass filter(BPF)is introduced in this paper. According to the paper, we developed good insertion loss and return loss of bandpass filter by cascade the highpass and lowpass filter intead of using simple bnadpass filter. This research upgrade the outcome and prototype of the bandpass filter for wireless communicaton. In this paper butterworth technique is used in the designing of the bandpass filter. In this paper we designed Ultra-wideband bandpass filter and compare result with the simple bandpass filter also improved the various parameters. Simulations have been performed by using Microwave office 2002.