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1、1992IEEEJOURNALOFSOLID-STATECIRCUITS,VOL.36,NO.12,DECEMBER2001A900-MHzDual-ConversionLow-IFGSMReceiverin0.35-mCMOSShahrzadTadjpour,Member,IEEE,EllieCijvat,StudentMember,IEEE,EmadHegazi,StudentMember,IEEE,andAsadA.Abidi,Fellow,IEEEAbstract—Alow-powerfullyintegratedGSMreceiverisde
2、vel-opedin0.35-mCMOS.ThisreceiverusesdualconversionwithalowIFof140kHz.Thisarrangementlessenstheimpactoftheflickernoise.ThefirstIFof190MHzbesttoleratesblockingsig-nals.Thereceiverincludesallofcircuitsforanalogchannelselec-tion,imagerejection,andmorethan100-dBcontrollablegain.There
3、ceiveraloneconsumes22mAfroma2.5-Vsupply,togiveanoisefigureof5dB,andinputIP3of16dBm.Asinglefrequencysyn-thesizergeneratesbothLOfrequencies.TheintegratedVCOwithon-chipresonatorandbuffersconsumeanother8mA,andmeetGSMphase-noisespecifications.IndexTerms—Amplifiers,analogpolyphasefilte
4、r,imagere-jection,mixers,oscillators,radioreceivers,RFCMOS,spuriousmixing.I.INTRODUCTIONOBILEwirelesstransceiversfacerelentlesspressureforMlowcost,lowpower,andsmallsize.AhighlyintegratedCMOSrealizationisthereforeofinterest.Itisgenerallyac-Fig.1.GSMblockertemplate.ceptedthatRF-CMO
5、Scircuitsaregoodforshort-rangecom-municatorssuchasDECTorBluetooth,butwhetherCMOScan(SNR)of9dBatthedemodulatoratthetargetbit-errorrateeverdeliverafullyintegratedreceiverwithcompetitiveperfor-(BER),thenoisefigure(NF)attheantennaoutputmustbeatmanceforachallengingcellularstandardsuch
6、asGSMcon-most10dB.Assuming3-dBinsertionloss,andthereforeNF,tinuestobedebated.PreviousbipolarorCMOSGSMtrans-fortheRFbandpassfilterpriortothereceiverinput,thisyieldsceiversuseoff-chipcomponentstorejecttheimageandlargeanupperlimitof7dBforNFofthereceiveritself.blockingsignals[1]–[3],
7、ordeferthesetaskstothebasebandWhatdistinguishesGSMfromotherwell-knowncellularsections[4].standardsistherequiredreceiverimmunitytoverylargeThispaperdescribesafullyintegratedCMOSGSMreceiver,in-bandsignals,calledblockers.Fig.1showstheblockingwhichwebelieveisthemorechallenginghalfoft
8、hetransceiver.profilefortheGSMstandard.T
