简介:Afullydifferentialcomplementarymetaloxidesemiconductor(CMOS)lownoiseamplifier(LNA)for3.1–10.6GHzultra-wideband(UWB)communicationsystemsispresented.TheLNAadoptscapacitivecross-couplingcommon-gate(CG)topologytoachievewidebandinputmatchingandlownoisefigure(NF).Inductiveseries-peakingisusedfortheLNAtoobtainbroadbandflatgaininthewhole3.1–10.6GHzband.Designedin0.18μmCMOStechnology,theLNAachievesanNFof3.1–4.7dB,anS11oflessthan–10dB,anS21of10.3dBwith±0.4dBfluctuation,andaninput3rdinterceptionpoint(IIP3)of–5.1dBm,whilethecurrentconsumptionisonly4.8mAfroma1.8Vpowersupply.ThechipareaoftheLNAis1×0.94mm2.