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1、Wireless產(chǎn)品主IC介紹ContentsBasicconceptsinRFdesignRadioblockdiagramIntroductionofICMACEqualizedbasebandprocessorNewRFfrontendReferencedesignsADC:Analogue-to-DigitalConversion模數(shù)轉(zhuǎn)換器DAC:Digital-to-AnalogConversion數(shù)模轉(zhuǎn)換器I/Q:In-phase/Quadrature同相/正交IF:IntermrdiateFrequency中頻RF:RadioFerquency射頻LO:Loc
2、alOscillator本地振盪器AGC:自動增益控制VCO:壓控振盪器PLL:鎖相回路LNA:LowNoiseAmplifier低噪聲放大ICuseinPCMCIAHFA3841-------MACHFA3861-------BBPHFA3783-------IFQmodemHFA3683-------RF/IFConverterHFA3983-------PowerampifierHFA3841MACOverviewFirmwareexecutes802.11protocolSupportsdataratesupto11MbpsGluelessinterfacetoPC
3、MCIAorISABus(USB,PCIonfuturereleases)GluelessinterfacetoPRISMRadioArbiterforaccessto128kexternalmemorySerialI/OforBBP,synthesizer,otherHFA3861BasebandProcessorSupports1and2MbpsIEEE802.11ComplementaryCodeKeying5.5and11MbpsComplementaryCodeKeyingIncludesAGCcontrolloopprocessingtoHFA3783HFA38
4、61incorporatesoneformofequalizationchannelmatchedfilterMACHFA3841Includes802.11and11Mbpssoftware+EqualizedbasebandprocessorHFA3861Supports802.1111Mbpswaveform+NEWRFfrontendHFA3683RF/IFConverterHFA3783QuadModemW/AGCHFA3983PowerAmplifierEnablesIEEE802.11complianceatallrates1,2,5.5,11MbpsAuto
5、maticdatarateselectionImprovedmultipathdistortionperformanceSupportsCCK(ComplementaryCodeKeying)ICuseinAPandUSBRF3000------BBPRF2948------IF/RFConverterRF2494------LNA&RFamplifier&mixerRF2189------PoweramplifierRF3000RF2948RF2494DiversityswitchTX/RXswitchBPF2.4~2.5GHzPARF2189RF2494BPFSAW37
6、4MHzRXVGCRF2948RXTX2.4~2.5GHzPAdriveΣRFVCOIFVCOSI4136÷2±45°QoutIoutQinIinTXVGCDiversityAntennasLNAPLLAP&USBBlockDiagram謝謝！
