Distributed CMOS Bidirectional Amplifiers: Broadbanding and Linearization Techniques PDF
Preview Distributed CMOS Bidirectional Amplifiers: Broadbanding and Linearization Techniques
Distributed CMOS Bidirectional Amplifiers ANALOGCIRCUITSANDSIGNALPROCESSING SeriesEditors: MohammedIsmail,TheOhioStateUniversity MohamadSawan,E´colePolytechniquedeMontre´al Forfurthervolumes: http://www.springer.com/series/7381 Ziad El-Khatib • Leonard MacEachern Samy A. Mahmoud Distributed CMOS Bidirectional Amplifiers Broadbanding and Linearization Techniques 123 ZiadEl-Khatib LeonardMacEachern DepartmentofElectronics DepartmentofElectronics CarletonUniversity CarletonUniversity 1125ColonelByDrive 1125ColonelByDrive Ottawa,ON Ottawa,ON Canada Canada SamyA.Mahmoud DepartmentofSystems andComputerEngineering CarletonUniversity 1125ColonelByDrive Ottawa,ON Canada ISBN978-1-4614-0271-8 e-ISBN978-1-4614-0272-5(ebook) DOI10.1007/978-1-4614-0272-5 SpringerNewYorkHeidelbergDordrechtLondon LibraryofCongressControlNumber:2012935516 ©SpringerScience+BusinessMediaNewYork2012 Thisworkissubjecttocopyright.AllrightsarereservedbythePublisher,whetherthewholeorpartof thematerialisconcerned,specificallytherightsoftranslation,reprinting,reuseofillustrations,recitation, broadcasting,reproductiononmicrofilmsorinanyotherphysicalway,andtransmissionorinformation storageandretrieval,electronicadaptation,computersoftware,orbysimilarordissimilarmethodology nowknownorhereafterdeveloped.Exemptedfromthislegalreservationarebriefexcerptsinconnection with reviews or scholarly analysis or material supplied specifically for the purpose of being entered and executed on a computer system, for exclusive use by the purchaser of the work. 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Printedonacid-freepaper SpringerispartofSpringerScience+BusinessMedia(www.springer.com) To mydearmotherand familyandfriends fortheirloveandkindness Preface ActiveMOSFETdevicescanbemodeledbynonlinearcurrentandchargesources thatdependonthe devicevoltages.Thesenonlinearsourcesgiverise todistortion when driven with a modulated signal. When the input signal driven into the amplifier semiconductor is increased, the output is also increased until a point wheredistortionproductscannolongerbeignored.Theharmonicsandhigherorder distortionoftheoutputsignalaregeneratedbynonlinearitiesofMOSFETdevices. A highly-linear optical transmitter with fully-integrated broadband design lin- earization capability is requiredto address linearity improvements.In response to theneedtocorrectthebroadbanddistributedamplifier(DA)’snonlineardistortion, a number of DA linearization techniqueshave been developed.However, most of the published DA linearization methods reported do not provide fully-integrated distortion cancellation techniques with large third-order intermodulation (IM3) distortionreduction. In this book, we demonstrate a fully-integrated fully-differential linearized CMOS distributed bidirectional amplifier that achieves large IMD3 distortion reduction over broadband frequency range for both RF paths. The proposed linearized bidirectional DA has the drain and gate transmission-lines stagger- compensated.ReducingtheDA IM3distortionbymismatchingthegateanddrain LC delay-line ladders. The proposed fully-differential linearized DA employs a cross-coupled compensator transconductor to enhance the linearity of the DA gain cell with a nonlinear drain capacitance compensator for wider linearization bandwidth.TheproposedlinearizedCMOSbidirectionalDA achievesameasured IM3distortionreductionof20dBwithfrequencyofoperationfrom0.1to9.5GHz andatwo-wayamplificationof5dBinbothRFdirections.Theproposedlinearized DA is implemented in 0.13(cid:2)m RF CMOS process for use in highly-linear UWB communications. vii Acknowledgements I would like to express my sincere gratitude to my dear co-authors and advisors Dr.SamyA.Mahmoud,ProfessorattheFacultyofSystemsEngineeringandDesign at Carleton University and Dr. Leonard MacEachern Professor at Electronics and ElectricalEngineeringatCarletonUniversityfortheircontinuoussupport,guidance, encouragement and involvement during the course of this book. Their help and supportisgreatlyappreciated. I am in debt to all who provided support. Financial support was provided by Carleton University in the form of a research assistantship and in the form of a graduatescholarship,andbytheNationalCapitalInstituteofTelecommunications (NCIT) and Centre for Photonics Fabrication Research (CPFR) in the form of a research grant is gratefully acknowledged. I would like to thank the Canadian MicroelectronicsCorporation(CMC)staffforbothCadencetechnicalsupportand fabricationsilicon space. I would like to thank IBM CorporationMOSIS for chip fabrication and Agilent staff for their ADS design environment tools and test equipmentsupporttomeasurethechipperformance. I wish to thank my dear mother, my sisters and brothers for their continuous prayers, encouragementand support during the course of this book, they all have stoodbyme. ix
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