13 ghz cmos active inductor lc vco

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1、138IEEEMICROWAVEANDWIRELESSCOMPONENTSLETTERS,VOL.22,NO.3,MARCH201213GHzCMOSActiveInductorLCVCODomenicoZito,Member,IEEE,DomenicoPepe,Member,IEEE,andAlessandroFonte,Member,IEEEAbstract—A13GHzactiveinductorLCvoltagecontrolledoscillator(VCO)hasbeenrealizedin90nmCMOStechnologybyST-Microele

2、ctronics.TheVCOconsistsoftwocomplementarycross-coupledpairs,anactiveLCtankimplementedbymeansofadifferentialhigh-low-noiseactiveinductorandtwop-MOSFETvaricaps,andanoutputbufferstage.Themeasurementsshowaphasenoiseofat1MHzfrequencyoffset.ThecurrentconsumptionoftheVCOcoreanddiffe

3、rentialboot-strappedinductoramountto0.7and1.8mA,respectively,froma1.2Vsupplyvoltage.IndexTerms—Activeinductor,CMOS,microwaveradiometer,phasenoise,RF,voltagecontrolledoscillator(VCO).I.INTRODUCTIONOLTAGEcontrolledoscillators(VCOs)providekeyper-Vformanceinwirelesscommunicationsystems.Us

4、edforthefrequencysynthesis,theyareaffectedbyphasenoise(PN),whichisoneofthemostrelevantmechanismsresponsiblefortheFig.1.SchematicoftheactiveinductorLCVCO.–areminimumsignaldegradationincommunicationsystems.Thereductionofchannellengthtransistorsofwidth6,6,14,14,6and14,respectively.th

5、ePNisdealtwitheffortsatdifferentlevels:technology,designareshuntMIMcapacitors.isap-MOSFETvar-andtopology.Asforthetopology,thelargenumbersofLCVCOicap(,).  .SeeFig.2fordetailsoftheD-BSI.circuitsolutionsproposedareoriginatedinlargepartfromthecross-coupledpairwithorw

6、ithoutacurrenttail[1].Alltheso-Thisletterreportsthedesign,implementationandexperi-lutionssuffer,moreorless,forthreemainmechanismsrespon-mentalcharacterizationofanovel13GHzCMOSLCVCOim-sibleforthephasenoiseperformancedegradation:thecurrenttailplementedbymeansofahigh-low-noiseLCactivetan

7、kbasednoise,thetransistorpairnoise,andthethermalnoiseofthetankonthedifferentialboot-strappedinductor,twocomplementaryparasiticresistance.SincethelossesintheLCtankareinlargecross-coupledpairsandbufferstage.Theletterisorganizedaspartduetothelossesinthespiralintegratedinductors,manyef-fo

8、llows