人教新课标版初中八上143用函数观点看方程(组)与不等式

226200612JOURNALOFMICROWAVESVol.22No.6Dec.2006:100526122(2006)06200592043(,210096):WCDMA,cdma2000TD2SCDMA,,7.5cm6cm,3GPP3GPP2:WCDMA,cdma2000,TD2SCDMA,,,RFModuleDesignforTestingSignalSourceoftheThirdGenerationMobileCommunicationYANPin2pin,HONGWei,LIUJin,TIANLing,WANGHai2bin,CHENPeng,JIANGZheng2bo(StateKeyLabofMillimeterWaves,SoutheastUniversity,Nanjing210096,China)Abstract:Amulti2modeRFmoduleofatestingsignalsourceisdesignedforthethreemajorstandardsofthethirdgenera2tion(3G)mobilecommunication:W2CDMA,cdma2000,andTD2SCDMA.TheRFmoduleishighlyintegrated,lowcost,andeasilyconfigurable.Inthispaper,thedesignschemeisdescribed,andtheRFmoduleissimulatedaccordingtodifferentstandard.Thetestingschemeisalsodiscussedforthemultiplestandards.Thewholemoduleisintegratedonafour2layeredPCBboardwithasizeof7.5cm36cm,anditistestedforW2CDMA,cdma2000andTD2SCDMAstandardseparately.Testingresultsshowitcanmeettherequirementsof3GPPand3GPP2standards.Keywords:W2CDMA,cdma2000,TD2SCDMA,RF,Multimode,Signalsource,,GSMIS295CDMA(2G),,,(3G),(ITU)3G:WCDMAcdma2000TD2SCDMA3G,WCDMAcd2ma2000TD2SCDMA,,[1,2],3G,,,,WCDMAcdma2000TD2SCDMA3G11.1[3],3:2005211206;:2006201205©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[4],,1,,(DAC),DACI/Q,,,,118002200MHz,WC2DMATD2SCDMA;800900MHz,cdma2000,1.2,(EVM)IQ,,,,EVM[5]Tv(t),0tT,s(t),0tT,EVM:EVM2=T0[v(t)-s(t)]2dtT0v(t)2dt(1)WCDMATD2SCDMAEVMcdma2000,[6],cdma2000:==+(2)2WCDMAcdma200TD2SCDMAEVM1,,WCDMA(a)WCDMAEVM(b)cdma2000(c)TD2SCDMAEVM2EVM06200612©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[79]3GPP2C.S00102Ccdma20003GPPTS25.105TD2SCDMA1WCDMAEVMcdma2000TD2SCDMAEVM1.8%0.9990.723%2AgilentE4438CESGAgilentE4406AVSAAgilent89600AgilentADS[10],AgilentADS,3G;AgilentE4438CESGADS3GI/Q,;AgilentE4406AVSA,PC89600,3G3334PCB,4,7.5cm6cm5,0dBm(a)WCDMAI/Q,,EVM1.8684%;(b)cdma2000I/Q,,EVM1.995%,0.9996;(c)TD2SCDMAI/Q,,EVM0.96439%4(a)WCDMA(b)cdma2000(c)TD2SCDMA516226:©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:,20002..:,20003WalidYAli2Ahmad.RFsystemissuesrelatedtoCDMAre2ceiverspecifications.RFDesign,1999(9):22324,,,,,.W2CDMA/cdma2000/GSM/.,2003,24(10):715Maxim.WCDMAEVM.,,20006TestingandtroubleshootingdigitalRFcommunicationstrans2mitterdesigns.AgilentApplicationNote,Literaturenumber596823578E73GPP:TS25.104V6.4.0basestation(BS)radiotransmis2sionandreception(FDD).://(BS)radiotransmis2sionandreception(TDD).:[e-mail]1962200,2,IEEETrans.MTT,(51)4,,,,,1HauptRL.Thinnedarraysusinggeneticalgorithms.IEEETransonAP,1994,42(7):9939992ONeillDJ.Elementplacementinthinnedarraysusingge2neticalgorithms.IEEEProcOCEANS,Breast,France,1994:II/3013063SamiiYR,MichielssenE.ElectromagneticOptimizationbyGeneticAlgorithm.NewYook:JohnWiley&Sons,19994JohnsonJM,Rahmat2SamiiY.Geneticalgorithmsinengi2neeringelectromagnetics.IEEEAntennasandPropagationMagazine,1997,39(4):7235,..,2003,31(12):213521386,,..,2000,22(1):174176,1976,,E2mail:[e-mail]26200612©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.