A　low　power　cascode　SiGe　BiCMOS　low　noise　amplifier　(LNA)　with　current　reuse　and　zero-pole　cancellation　is　presented　for　ultra-wideband　(UWB)　application.　The　LNA　is　composed　of　cascode　input　stage　and　common　emitter　(CE)　output　stage　with　dual　loop　feedbacks.　The　novel　cascode-CE　current　reuse　topology　replaces　the　traditional　two　stages　topology　so　as　to　obtain　low　power　consumption.　The　emitter　degenerative　inductor　in　input　stage　is　adopted　to　achieve　good　input　impedance　matching　and　noise　performance.　The　two　poles　are　introduced　by　the　emitter　inductor,　which　will　degrade　the　gain　performance,　are　cancelled　by　the　dual　loop　feedbacks　of　the　resistance-inductor　(RL)　shunt-shunt　feedback　and　resistance-capacitor　(RC)　series-series　feedback　in　the　output　stage.　Meanwhile,　output　impedance　matching　is　also　achieved.　Based　on　TSMC　0.35　mu　m　SiGe　BiCMOS　process,　the　topology　and　chip　layout　of　the　proposed　LNA　are　designed　and　post-simulated.　The　LNA　achieves　the　noise　figure　of　2.3-4.1　dB,　gain　of　18.9-20.2　dB,　gain　flatness　of　+/-　0.65　dB,　input　third　order　intercept　point　(IIP3)　of　-7　dBm　at　6　GHz,　exhibits　less　than　16　ps　of　group　delay　variation,　good　input　and　output　impedances　matching,　and　unconditionally　stable　over　the　whole　band.　The　power　consumption　is　only　18　mW.　(C)　2012　Elsevier　GmbH.　All　rights　reserved.