应用于软件定义的UHF RFID读卡器的可编程基带滤波器

LTC6602双通道带通滤波器是一款就用于高性能UHFRFID读卡器设计的可编程基带滤波器，通过软件控制采用单应答机或在应答机有使用标签信号实现高数据率，LTC6602采用紧凑型封装，可通过并口或串口进行控制。ProgrammableBasebandFilterforSoftware-DenedUHFRFIDReadersDesignNote432PhilipKarantzalisIntroductionclockfrequency.ThelowpassdivisionratiooptionsareRadiofrequencyidentication(RFID)isanauto-IDtech-100,300and600andthehighpassdivisionratiosare,nologythatidentiesanyobjectthatcontainsacodedtag.1000,2000,6000.Figure1showsatypicallterresponseAUHFRFIDsystemconsistsofareader(orinterrogator)witha90MHzinternalclockandthedivisionratiossettothattransmitsinformationtoatagbymodulatinganRF6000and600forthehighpassandlowpass,respectively.signalinthe860MHz