声表面波射频识别技术及其发展.pdf

-*陈艺慧1,2,郑高峰1,孙道恒1,,,SAW是沿物体表面传播的、能量集中于表面附近的一种弹性波。基于SAW技术实现的射频识别RadioFrequencyIdentification,RFID是应用现代电子学、声学、微电子工艺技术和雷达信号处理技术等的新成就,具有纯无源,阅读距离大,制造成本低,可在高温差、强电磁干扰等恶劣环境下工作等特点,可应用于交通运输、工农业生产制造及监测等各个领域。它是基于集成电路芯片RFID的重要技术补充,逐渐受到了业界的广泛关注。文中基于SAW-RFID的工作原理介绍了SAW-RFID的特点及优势,分析讨论了SAW标签的编码方式、发展状况及关键技术问题等。关键词声表面波射频识别标签叉指换能器中图分类号TN65文献标识码A文章编号1008-5300201203-0001-06SurfaceAcousticWaveRadioFrequencyIdentificationTechnologyandItsDevelopment,CHENYi-hui12,ZHENGGao-feng1,SUNDao-,SchoolofPhysicsandMechanical&ElectricalEngineering,XiamenUniversity,Xiamen361005,,SchoolofInformationScienceandTechnology,XiamenUniversity,Xiamen361005,ChinaAbstractSurfaceacousticwaveSAWisanacousticwavetravelingalongthesurfaceofamaterialexhibi-tingelasticity,-basedradiofrequencyidentificationRFIDtechnologyisanewachievementinvolvingthemodernelectronics,acoustics,microelectronicprocesstechnologyandradarsignalprocessingtechnology,,wide-readingrange,lowcostandcanoperateunderharshenvironments,suchashightemperaturedifference,strongelec-icinterference,,industrialandagriculturalmanufactu