Hzfrequencyband.UWBtechniquesarepromisingtechnology,capableofbothaccuratepositionlocationandhigh-rate,shortrangead-hocnetworkingaswellashigh-resolutionsensing.Carrier-basedUWBsignalshavebeenwidelyusedinvariousradarandcommunicationapplications[]–[].Theyholdtheadvantageofmoreconvenientspectrummanagementandlessdistortionthroughantennas[].IntypicalUWBtransmitters,thegeneratedcarrier-basedUWBvoltagesignalneedstobesenttoawidebandpoweramplifier(PA)toachievetherequiredpowerlevel.Thisapproachsuffersfromtwomajordisadvantages:thedesignchallengesofaUWBPAandlowpowerefficiencyinlowpulserepetitionfrequency(PRF)situation.Inthispaper,weproposeanewarchitectureforcarrier-basedUWBtransmitterthatisnotonlypower-efficient,butalsoreducescircuitcomplexity[].WealsodemonstratetheworkabilityandperformanceofanewCMOStransmittermodule,coveringtheentire.-.GHzUWBbandwithvariablebandwidthofMHztoGHz.TheCMOSchipwasdesignedandfabricatedusing