BLUETOOTHWLAN RECEIVER DESIGN METHODOLOGY AND Appr

BLUETOOTH/WLANRECEIVERDESIGNMETHODOLOGYANDICIMPLEMENTATIONSADissertationbyAHMEDAHMEDELADAWYEMIRASubmittedtotheOfficeofGraduateStudiesofTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYDecember2003MajorSubject:ElectricalEngineeringBLUETOOTH/WLANRECEIVERDESIGNMETHODOLOGYANDICIMPLEMENTATIONSADissertationbyAHMEDAHMEDELADAWYEMIRASubmittedtoTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYApprovedastostyleandcontentby:EdgarSánchez-Sinencio(ChairofCommittee)JoséSilva-Martínez(Member)AydinKarsilayan(Member)ScottMiller(Member)DuncanWalker(Member)ChananSingh(HeadofDepartment)December2003MajorSubject:ElectricalEngineeringiiiABSTRACTBluetooth/WLANReceiverDesignMethodologyandICImplementations.(December2003)AhmedAhmedEladawyEmira,B.Eng.,CairoUniversity,Egypt;M.Eng.,CairoUniversity,EgyptChairofAdvisoryCommittee:Dr.EdgarSánchez-SinencioEmergingtechnologiessuchasBluetoothand802.11b(Wi-Fi)havefuelledthegrowthoftheshort-rangecommunicationindustry.Bluetooth,theleadingWPAN(wirelesspersonalareanetwork)technology,wasdesignedprimarilyforcablereplacementapplications.ThefirstgenerationBluetoothproductsarefocusedonprovidinglow-costradioconnectionsamongpersonalelectronicdevices.IntheWLAN(wirelesslocalareanetwork)arena,Wi-Fiappearstobethesuperiorproduct.Wi-Fiisdesignedforhighspeedinternetaccess,withhigherradiopowerandlongerdistances.Bothtechnologiesusethesame2.4GHzISMband.ThedifferencesbetweenBluetoothandWi-Fistandardfeaturesleadtoanaturalpartitioningofapplications.Nowadays,manyelectronicsdevicessuchaslaptopsandPDAs,supportbothBluetoothandWi-Fistandardstocoverawiderrangeofapplications.Thecostofsupportingbothstandards,however,isamajorconcern.Therefore,adual-modetransceiverisessentialtokeepthesizeandcostofsuchsystemtransceiversataminimum.ivAfullyintegratedlow-IFBluetoothreceiverisdesignedandimplementedinalowcost,mainstream0.35µmCMOStechnology.ThesystemincludestheRFfrontend,frequencysynthesizerandbasebandblocks.Ithas-82dBmsensitivityanddraws65mAcurrent.ThisprojectinvolvedsixPh.D.studentsandIwasinchargeofthedesignofthechannelselectioncomplexfilter.IntheBluetoothtransmitter,afrequencymodulatorwithfinefrequencystepsisneededtogeneratetheGFSKsignalthathas±160kHzfrequencydeviation.AlowpowerROM-lessdirectdigitalfrequencysynthesizer(DDFS)isdesignedtoimplementthefrequencymodulation.TheDDFScanbeusedforanyfrequencyorphasemodulationcommunicationsystemsthatrequirefastfrequencyswitchingwithfinefrequencysteps.Anothercontributionistheimplementationofadual-mode802.11b/BluetoothreceiverinIBM0.25µmBiCMOSprocess.Direct-conversionarchitecturewasusedforbothstandardstoachievemaximumlevelofintegrationandblocksharing.IwashonoredtoleadtheeffortsofsevenPh.D.studentsinthisproject.Iwasresponsibleforsystemleveldesignaswellasthedesignofthevariablegainamplifier.Thereceiverchipconsumes45.6/41.3mAandthesensitivityis-86/-91dBm.vDEDICATIONTomyParents,TomyBrother,andSister,AndtomyfiancéeEmanFortheirloveandsupportviACKNOWLEDGEMENTSAjourneyiseasierwhenyoutraveltogether.Interdependenceiscertainlymorevaluablethanindependence.ThisdissertationistheresultoffouryearsofworkwherebyIhavebeenaccompaniedandsupportedbymanypeople.Itisapleasantaspecttonowhavetheopportunitytoexpressmygratitudeforallofthem.Withadeepsenseofgratitude,Iwishtoexpressmysincerethankstomysupervisor,Dr.EdgarSánchez-Sinencio,forhisimmensehelpinplanningandexecutingtheworkinatimelymanner.TheconfidenceanddynamismwithwhichDr.Sánchezguidedtheworkrequiresnoelaboration.Hiscompanyandassuranceatthetimeofcrisiswillalwaysberemembered.Histechnicalandeditorialadvicewasessentialtothecompletionofthisdissertationandtaughtmeinnumerablelessonsandinsightsontheworkingsofacademicresearchingeneral.IamalsogratefultoDr.SherifEmbabiandhisgroupatTexasInstrumentsforsharingmuchoftheirvaluabletimetoreviewthedesignoftheBluetoothandChameleonreceiverprojects.Theircommentsandsuggestionswereveryusefulinavoidingpotentialdesignproblemsandimprovingtheperformanceofthereceiver.IwouldalsoliketoexpressmygratitudetoDr.JoséSilva-MartínezandDr.AydinKarsilayanwhowerealwaystheretoanswermytechnicalquestionsthroughoutmyentirePh.D.program.Thanksalsogotomycommitteemembers:Dr.ScottMillerandDr.DuncanWalkerfortheirtimeandvaluablecommentsonmyresearch.IamfortunatetohavehadtheopportunitytoworkwithagroupofenergeticpeopleintheAnalogandMixedSignalCenter(AMSC).Specialthanksandwordsofappreciationareduetomyfriend,researchpartner,andexroommateAhmedNaderviiMohieldin.IwashisroommateduringthefirsttwoyearsofmyPh.D.HemademyarrivaltoCollegeStationalotsmootherthanIthoughtitwouldbe.Hewaslikemyfamilyawayfromhome.Onthetechnicalside,AhmedandIworkedtogetheronthreefruitfulprojects,whichconstitutedamajorpartofmyPh.D.Ilearnedmuchfromournumeroustechnicaldiscussions.IalsoenjoyedthecompanyofmanystudentswithwhomIhadveryinterestingtechnicaldiscussions.IhadthemostwonderfullearningexperienceworkingwithateamofveryactiveandbrightPh.D.studentsintheBluetoothandtheChameleonprojects,whichincludedAlbertoValdes-Garcia,AriValero-Lopez,