TI TRF2443宽带无线IF收发方案

TITRF2443宽带无线IF收发方案TI公司的TRF2443是高度集成全双工宽带无线IF收发器,接收器集成了IQ解调器,通过模拟和数字控制的VGA可提供大于90dB的增益,可编程的基带低通滤波器能灵活地接收不同带宽的信号,TX输出IP3为29.5dBm,TX输出噪音为-166dBc/Hz.TX信号链(165-175MHz/330-350MHz),RX信号链(140-165MHz/280-330MHz),主要应用在点对点微波，宽带无线接入,无线微波骨干线路和WiMAXIF收发器.本文介绍了TRF2443的主要特性,功能方框图，接收链路方框图，RX和TXPLL方框图，XPIC方框图，应用电路图以及TRF2443评估模块主要特性，电路图，布局图(和所用材料清单.IntegratedIFTransceiverforBroadbandWirelessApplicationsTRF2443isahighlyintegratedfull-duplexintermediatefrequency(IF)transceiverdesignedforbroadbandpoint-to-pointwirelesscommunicationsapplications.Thereceiverchainintegratesaquadrature(IQ)demodulatorandprovidesmorethan90dBofgainrange,obtainedviaacombinationofanaloganddigitalcontrolledVGAs.Theintegratedprogrammablebasebandlow-passfiltergivestheTRF2443theflexibilitytoreceivesignalswithdifferentbandwidths,whilealsohelpingtoremoveinterferersignalsbeforetheyreachtheADC.Additionally,theTRF2443givestheflexibilitytoaddanexternalIFfiltertofurtherremoveunwantedsignals.TheTRF2443transmitterchainintegratesaquadrature(IQ)modulatordrivingahighlylinearIFDVGAthatprovides35dBofgainrangecontrolledviaaserialprogramminginterface(SPI).TheTRF2443includesthetwosynthesizersforthereceiverandtransmitterchains,removingtheneedforexternalLOgenerationcircuitryandsimplifyingtheimplementationofafrequency-divisionduplexing(FDD)transceiverdesign.TheTRF2443alsoprovidesCross-PolarizationInterferenceCancellation(XPIC)supportviaanintegratedXPICoutputamplifierandreceiverchain.TheTRF2443isanidealbuildingblockforimplementingtheIFtransceiverfunctionintheIndoorUnit(IDU),whichisconnectedviacoaxialcableinterfacetotheOutdoorUnit(ODU),ofapoint-to-pointmicrowavebackhaulsplit-architecturesystem.TRF2443主要特性：IntegratedTXChain(165T75MHz/330-350MHz)BasebandAmplifiersQuadratureModulatorDigitallyControlledVGATXOutputIP3:29.5dBmTXOutputNoise:T66dBe/HzIntegratedRXChain(140-165MHz/280-330MHz)IFAmplifiersAnalogandDigitalVGAQuadratureDemodulatorBasebandFiltersADCBuffersIFSAWFilterBypassRXNoiseFigure:4.3dBRXInputIP3:9.5dBmIntegratedTXandRXSynthesizersIntegratedCross-PolarizationInterferenceCancellation(XPIC)SupportAuxiliaryRXChainTRF2443应用：WirelessMicrowaveBackhaulPoint-to-PointMicrowaveBroadbandWirelessApplicationsWiMAXIFTransceiverAPE4XPCjticn也IM：881

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v0ATASJ3L32捌图LTRF2443功能方框图RXAGCTIFOUTIFINAGC

CNTLRXVGA]LNA4 .RXIN匚.IFVGA1FromSPIIFVGA2IFVGA3B8AMPMLTFromSPIRXBBIRX_BBO,Tdhr&Pli；图2.TRF2443接收链路方框图XPIC

AGCXPICBBIXPIC.BBQ图4.TRF2443XPIC方框图F}pL_>XRCOUTFSowTXDUTp4CMMz）QAtterrTXUlXtftlO/O04（MH4）F-2M0MHZLflW«1Q0KHZr*272tw»«£LWVTC6WVtCM・■・午fttUVFIOUIW图5.TRF2443应用电路图TRF2443IF收发器评估模块TRF2443IntegratedIFTransceiverEvaluationModuleTheTRF2443EVMistheevaluationboardfortheTRF2443integratedIFtransceiverforbroadbandwirelessapplications.TheTRF2443EVMincludesinstructionsforequipmentsetupprocedures,softwareGUIconfigurations,andtestproceduresthatallowausertoquicklyandaccuratelymeasuretheTRF2443performancecharacteristics.TheTRF2443EVMcanbeusedtoselectoptionsfortrimmingthedeviceconfigurationinordertomeetvariousapplicationrequirements.TRF2443评估模块主要特性：ComprehensivetestcapabilityfortheTRF2443USBconnectionfromEVMtoPCSoftwaresupportwithafullyfeaturedGUIforeasytestingTRF2443on-chipEEPROMaccessguide图7.TRF2443评估模块电路图(2)ECH「"eCH电ItXASIrtSTRUMENTS。TkXASInstruments图9.TRF2443评估模块电路图(4)VThxasInstrumentsII TVMOBMKM*[•IFOUTJ6TXOUTJ24RXBBQJ17 J12TXBBINTXB8IPJ7RXINJ32XPICINJ16XPIC8B4J25XPIC8BOJ28 J3J23TXLOTEST REFIN TXB8QNJ20IXB8QPJ15RXBBI侬J31RXLOTESTIFINXPICOUT图11.TRF2443评估模块布局图（顶层）材料清单:NOQTYPMflgSC4PCBFoe^pflntMftP*rtNUMMfNOU117C1C14C19C21CSS63U36csi力CM6.--C74di,0402PANASONICEC-CEB1C1WK21a38IMUTA3RV1555C1HM1JAD10S,a第X802VUWA8Vl41C422pr0102IA-RATASRVlSWC^rUl^JZOT51C4seotF0402IA-RATAGRVIK5C1HK1JA31DeC3C»5€pF0402UUUTAGRUiSSSClHS^JOCID79cuaec4icMh040：PAMAJOlCeoceeiAioeug9C15C26C33C31C32C34C5DCS2as100;pF0402IA-RATA3RV1SS5C1Mia^AD1D91cnlow0402PAX^SOMICtc--cttieia«102C19C2C47pFC402FAXASOTiCEC--CEC1HIT3J113工C24C71100fFG4D2MLRATAGRU15S501H101J20-D1213a3C25C53C$4C«36mewC5SC6DC€SC<9C70220^0102IKAA7A8554041JA01。135035C3T083W38IMUTAGRV1555CM4RTCZ01O14BC39C4CJ工C43CMC47C4BC4922*0402KEVETCO4Q2C^SM9CACU0CWCW04028V，*$CW730iO_DM0M164CSCC97C9BC99isprW02PAHAOCMC170C100C101©(帧-S0.G432IAjRATAGRU156^7*H471KAC1DM -DM162emee1500402PAHWHICg-2代Vi8M_0NIONI191C1MTANT.DNCCCWFCNENTSCCfiPSNTC-TX76K10-RD201DIstuelSO.0505PAXASOMC^U9O6W56JX21283GMENifojjoeirrt-osLEY丽R22ISmFB2FB3FB4FB£F967'FBBF392221：FB1S1200102KWTABLM18AGI2I3NB230FL1140VH：2"_F1LTER_1SX2H_K・—SABTECHNOLOGYTB23€4A_*DNIU1/IMDJACK_THVT_SAfUHA_500C*AAuCOELECTRO%"ST-M1A2$1J290JAC^YHVT.3AHA、AJ3RAU.CDeieCTROKCG5T3IB%17J3J6J7J12J1S.£J17J20J23.i：J；5Z'r，欣叫4435MApn.LAUNCK5MA.ALT.2wComponent142-0701-K1271RUSE.3.3.r.eThCCW.—\35■耳J3W7B02SB.45J-4J1：m6足・力SMA7>f/TSVATH/T320X1XJ^nwnOompontntt142-0701.231*1jpiJUUFeZ_，x，18PVW・3_18.UswiecT3¥*-lOJ4?<-$(SHvNT2-M300L1L25«rMS0.C4XCaiCRMT:MQWWXJLB.D'IDM312L3UMnHAD_C4X8U：RA5"34a*CS48»iXJLw324L5L6L7L6钏Hird_04Q281CRA5T3