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TI TRF2443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WiMAX IF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.Integrated IF Transceiver forBroadband WirelessApplicationsTRF2443is ahighly integratedfull-duplex intermediatefrequency IFtransceiverdesigned for broadband point-to-point wirelesscommunicationsapplications.The receiverchain integratesa quadratureIQ demodulatorandprovides morethan90dB ofgain range,obtained viaa combinationof analoganddigital controlledVGAs.The integratedprogrammable basebandlow-passfilter gives the TRF2443the flexibility to receivesignals withdifferentbandwidths,while alsohelping toremove interferersignals beforethey reachtheADC.Additionally,the TRF2443givestheflexibilitytoadd anexternal IFfilterto furtherremove unwantedsignals.The TRF2443transmitter chainintegratesa quadratureIQ modulatordriving ahighly linearIF DVGAthatprovides35dB ofgain rangecontrolled viaa serialprogramming interfaceSPI.The TRF2443includes thetwo synthesizersfor thereceiver andtransmitter chains,removing theneed forexternal LOgeneration circuitryand simplifyingtheimplementation of a frequency-division duplexingFDD transceiverdesign.TheTRF2443also providesCross-Polarization InterferenceCancellation XPICsupportvia anintegrated XPICoutput amplifierand receiverchain.The TRF2443is anideal buildingblock forimplementing theIF transceiverfunction intheIndoor UnitIDU,which isconnected viacoaxial cableinterface tothe OutdoorUnitODU,ofapoint-to-point microwavebackhaul split-architecture system.TRF2443主要特性Integrated TXChain165T75MHz/330-350MHzBaseband AmplifiersQuadratureModulatorDigitally ControlledVGATX OutputIP3:
29.5dBmTX OutputNoise:T66dBe/HzIntegrated RXChain140-165MHz/280-330MHzIF AmplifiersAnalogand DigitalVGAQuadrature DemodulatorBasebandFiltersADC BuffersIFSAW FilterBypassRX NoiseFigure:
4.3dBRX InputIP3:
9.5dBmIntegrated TXand RXSynthesizersIntegrated Cross-Polarization InterferenceCancellation XPICSupportAuxiliary RXChainTRF2443应用Wireless MicrowaveBackhaulPoint-to-Point MicrowaveBroadbandWireless ApplicationsWiMAXIFTransceiver图LTRF2443功能方框图APE XPCJTICN也图
2.RX AGCTRF2443TIF OUTIF IN接收链路方框图IM881B8AM PMLT■AGC RXVGA]里CNTL4XRC eaiRX BBILNArrwWl匚.
4.RX INRWIFVGA1IFVGA2IFVGA3RX_BBORXM CMFromSPI,TdhrPli;RxseoroTper^in FromSPITEMPCXHq3i«rClKSPiv0ATASJ3L32捌a RTXOA一Gr£Brm IN・图
4.TRF2443XPIC方框图XPICAGC图
5.TRF2443应用电路图F}pL_XRCOUTFSowTRF2443IF收发器评估模块XPIC BBITRF2443Integrated IFTransceiver EvaluationModuleF-2M0MHZXPLICflW.«1BQB0KQHZThe TRF2443EVM isthe evaluationboard forthe TRF2443integrated IFtransceiverforbroadbandwireless applications.The TRF2443EVM includesinstructionsfor equipmentsetup procedures,software GUIconfigurations,andtest proceduresthat allowa userto quicklyand accuratelymeasure the TRF2443performance characteristics.The TRF2443EVM canbe usedto select・options fortrimming thedevice configurationin orderto meetVtCMTXDUTp4CMMz)various applicationrequirements.fttUVFQAtterr■IOUIWTRF2443评估模块主要特性・Comprehensive testcapability fortheTRF2443USB connectionfrom EVMto PC()TXUlXtftlO/O04MH4午Software supportwith afully featuredGUI foreasyr*272tw»«£LWVTC6WtestingTRF2443on-chip EEPROMaccess guide图
7.TRF2443评估模块电路图2E「电ItXAS IrtSTRUMENTSHCHCe图
11.TRF2443评IFIN XPICOUTRXBBI估模块布局图(顶层)RXBBQ材料清单:PMflgSC4PCBFoe^pflnt MftP*rtNUMMfQTY NOUNOIFOUTJ32XPICIN117C1C14C19C21di,0402PANASONIC EC-CEB1C1WKCSS63U36csi力CM
6.--C74J16XPIC8B4J7RXIN21a38IMUTA3RV1555C1HM1JAD10S a第X802VUWA8Vl,J6TXOUTJ25XPIC8BO41C422pr0102IA-RATA SRVlSWC^rUl^JZOT51C4seotF0402IA-RATA GRVIK5C1HK1JA31De C3C»5€pF0402UUUTA GRUiSSSClHS^JOCID79cuaec4icMH040PAMAJOlC eoceeiAioeug9C15C26C33C31100;pF0402IA-RATA3RV1SS5C1Mia^AD1DC32C34C5DCS2as91cn low0402PAX^SOMIC tc--cttieia«102C19C2C47pF C402FAXASOTiC EC--CEC1HIT3J113工C24C71100fF G4D2MLRATA GRU15S501H101J20-D1213a3C25C53C$4C«36220^0102IKAA7A8554041JA01mewC5SC6DC€SC9C70J28J3J23J20J17J12TXLOTEST REFINTXB8QNIXB8QP TXBBINTXB8IP135035C3TW38IMUTA GRV1555CM4RTCZ01O08314B C39C4CJ工C4322*0402KEVET CO4Q2C^SM9CACCMC47C4BC49U0CWCW04028V,*$CW730iO_DM0M4CSCC97C9BC99ispr W02PAHAOCMC16170C100C101©帧-S
0.G432IAJRATA GRU156^7*H471KAC1D DMM-162emee1500402PAHWHIC g-2代Vi8M_0NI ONI191C1M TANT.D NCCCWFCNENTSCCfiPSNTC-TX76K10-RD201DI stuelSO.0505PAXASOMC^U9O6W56JX21283GMEN ifojjoeirrt-os LEY丽R22IS mFB2FB3FB41200102KWTA BLM18AGI2I3NBFB£F967FBBF392221FB1S230FL1140VH2_F1LTER_1SX2H_K・—SABTECHNOLOGY TB23€4A_*DNIU1/I MDJACK_THVT_SAfUHA_500C*A AuCOELECTRO%ST-M1A2$J290JAC^YHVT.3AHA、AJ3R AU.CDeieCTROKCG5T3IB1%17J3J65MApn.LAUNCK5MA.ALT.2wComponent142-0701-K1J7J12J1S.£J17J20J
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0.C4X CaiCRMT:MQWWXJLB.DI DM312L3U MnHAD_C4X8U RA534a*CS48»iXJLw324L5L6L7L6钏H ird_04Q281CRA5T34KCS-52HXJLV»0ine»tn0_040i PAHAJOMCONI340L13LU0ird.0402PA\A3O«C ER--2GeC«X^0Nl DM3S2L15L%59nM0402CCaCRMT:MQH89HXGL264STi^OOFF nfgiiSjjtxtdKEYSTONE乂*WT2MT4WT6VTO371M10K0402PAHASOMIC ERJ-2RKTI001X详情请见http://focus.ti.com/lit/ds/symlink/trf
2443.pdf和.ti.com/lit/ug/slwu065/slwu
065.pdf。
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