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1、机械与电气工程学院毕业设计(论文)外文翻译所在学院:机电学院班级:姓名:学号:指导教师:合作导师:2013年10月31日VoltageControlledRingOscillatorDesignwithNovel3TransistorsXNOR/XORGatesManojKumar1,SandeepKumarArya1,SujataPandey21DepartmentofElectronics&CommunicationEngineeringGuruJambheshwar,UniversityofScience&Technology,Hisar,India2Department
2、ofElectronics&CommunicationEngineering,AmityUniversity,Noida,IndiaE-mail:manojtaleja@gjust.orgReceivedApril14,2011;revisedMay6,2011;acceptedMay13,2011AbstractInpresentwork,improveddesignsforvoltagecontrolledringoscillators(VCO)usingthreetransistorsXNOR/XORgateshavebeenpresented.Supplyvoltage
3、hasbeenvariedfrom[1.8-1.2]Vinproposedde-signs.Infirstmethod,theVCOdesignusingthreeXNORdelaycellsshowsfrequencyvariationof[1.900-0.964]GHzwith[279.429-16.515]μWpowerconsumptionvariation.VCOdesignedwithfiveXNORde-laycellsshowsfrequencyvariationof[1.152-0.575]GHzwithvaryingpowerconsumptionof[46
4、5.715-27.526]μW.InthesecondmethodVCOhavingthreeXORstagesshowsfrequencyvariation[1.9176-1.029]GHzwithpowerconsumptionvariationfrom[296.393-19.051]μW.AfivestageXORbasedVCOdesignshowsfrequencyvariation[1.049-0.565]GHzwithpowerconsumptionvariationfrom[493.989-31.753]μW.Simulationshavebeenperform
5、edbyusingSPICEbasedonTSMC0.18μmCMOStechnology.Powercon-sumptionandoutputfrequencyrangeofproposedVCOshavebeencomparedwithearlierreportedcircuitsandproposedcircuit’sshowsimprovedperformance.Keywords:CMOS,DelayCell,LowPower,VCO,XORandXNORGates1.IntroductionThePhaselockedloops(PLL)arewidelyusedc
6、ircuitcomponentindatatransmissionsystemsandhaveexten-siveapplicationsindatamodulation,demodulationandmobilecommunication.Voltagecontroloscillators(VCO)arethecriticalandnecessarybuildingblocksofthesePLLsystems.TwowidelyusedVCOstypesareLCtankbasedandCMOSringcircuits.Combinationofinductorandcap
7、acitorconsumeslargelayoutareainLCtankbasedoscillators[1-3].CMOSringbasedoscillatorshaveadvantagesduetoeaseofcontrollingtheoutputfrequencyandnorequirementforonchipinductors[4,5].CMOSbasedringoscillatorsareeasiertointegrateandalsogiveswidetuningrange