In this paper, the authors present a compact band notch ultra-wide band band-pass filter. This filter comprise of inter-digital finger structure with planar configuration. The inter-digital finger resonator is used for getting UWB band and as well as for notch at WLAN band (5.55 to 5.85GHz). As for UWB radio system WLAN is interference. The filter is compact in size with dimension 17X17X1mm3 with the ground plane. For designing and fabrication of this structure FR-4 substrate of thickness 1 mm with Dielectric constant 4.9 is used.