一种应用于单芯片UHF阅读器的低成本直接上变频发射机(英文)-豆柴文库

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一种应用于单芯片UHF阅读器的低成本直接上变频发射机(英文)
Abstract
Withtheadvancementincommunicationtechnology,RFID(RadioFrequencyIdentification)technologyisgainingpopularity,primarilyinthelogisticsandinventorymanagementindustry.RFIDtags,whichcontainauniqueidentificationnumber,areaffixedonproducts,andthedataistransmittedtotheRFIDreader.TheUHFRFIDtechnologyhasbecomepopularduetoitslongerreadingdistance,fasterdatatransferrate,andreducedinterferencefromsurroundings.However,UHFRFIDreadersareexpensiveduetotheuseofspecializedcomponentslikeradiofrequency(RF)frontends,poweramplifiers,andoscillators.Inthispaper,weproposealow-costdirectup-conversiontransceiverdesignforasingle-chipUHFRFIDreader.
Introduction
RFIDtechnologyutilizesradiowavesbetweenanRFIDtagandanRFIDreadertoidentifyandtrackobjects.AnRFIDtagconsistsofamicrochip,antenna,andnecessarypackaging.Themicrochipcontainsauniqueidentificationnumberthatcanbeusedfortrackingandinventorymanagementpurposes.TheRFIDreaderisresponsibleforcommunicatingwiththeRFIDtag,collectingthedata,andforwardingthedatatoacentralizedsystem.
ThereareseveraltypesofRFIDtechnologiesavailable,includinglowfrequency(LF)RFID,highfrequency(HF)RFID,andUHFRFID.TheUHFRFIDtechnologyhasbecomepopularduetoitslongerreadingdistance,fasterdatatransferrate,andreducedinterferencefromsurroundings.However,forUHFRFIDreaders,specializedcomponentslikeRFfrontends,poweramplifiers,oscillators,andfiltersarerequired,makingthedesignexpensive.
AtypicalUHFRFIDreaderconsistsofafront-endcircuit,apoweramplifier,amodulator/demodulator,andadigitalsignalprocessor.TheRFfrontendisresponsibleforfilteringoutunwantedsignals,amplification,andfrequencydown-conversiontotheintermediatefrequency(IF)range.Thepoweramplifierisresponsibleforenhancingthesignalstrength,andthemodulator/demodulatorallowsfordatamodulationanddemodulation.Thedigitalsignalprocessorperformsthesignalprocessinganddatademodulationfunctions.
Design
Inthispaper,weproposealow-costdirectup-conversiontransceiverdesignforasingle-chipUHFRFIDreader.Theproposeddesig