In this paper we presented Design and simulation of two hairpin Band pass filter. The first filter is designed to operate at center frequency of  2.22 GHz with a fractional Bandwidth of 20% and Return loss of -22.24 dB obtained  using FR4 substrate and Second Hairpin Band pass filter is designed to operate at 2.22Ghz  with a fractional Bandwidth of 20% using Rogers RT/duroid 6006 substrate and in the second case Return loss is Improved and filter size is Reduced.

Keywords- Hairpin Band Pass Filter, Return loss, FR-4 substrate and Rogers RT/duroid 6006 substrate