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RFTransmitterArchitecturesPlenarySession7RFTransmitterArchitecturesforIntegratedWirelessTransceiversAbdellatifBellaouarTexasInstruments,Dallas,TX75243,USA(e-mail:abell@ti.com)SummarySeveraltransmitterarchitecturesforwirelesssystemsarediscussed.Amongthem,thetwo-steparchitecture,direct-conversion,offsetmodulatorandmodulationloop.ExamplesofarchitecturesforTDMNCDMAsystemsaregiven.Finally,adesigncaseforGSMIDCSI*PCSapplicationisshownusing0.6pmBiCMOStechnology.mucheasier.Thisprocessiscalledsinglesideband(SSB)upconversion.IntheGSMsystem,theunwantedsidebandmustberejectedbyover35dBc.Ingeneralthetransmitteroutputspectrummustsatisfyasystem-specificspectralmask.Fig.2illustratesthetransmitsidebetweenthePAandtheantenna……