In　this　paper,　a　blind　narrowband　interference　(NBI)　mitigation　approach　using　a　filter　bank　(FB)　is　proposed　for　energy　detection　(ED)　based　UWB　receiver.　By　comparing　the　received　signal　energy　of　the　filter　branches,　the　proposed　FB-ED　UWB　receiver　can　achieve　effective　dynamic　NBI　detection　and　mitigation　without　requiring　any　transmission　of　preamble　prior.　Simulation　results　show　that　the　proposed　FB-ED　receiver　can　significantly　improve　the　bit-error-rate　performance　of　energy　detection　based　impulse　UWB　transceivers　no　matter　when　an　NBI　is　present　or　not.