UHF频段RFID阅读器近场耦合天线设计与分析  

A Design and Analysis of a UHF Near-field RFID Reader Antenna

作　　者：王鑫[1] 赖晓铮[1] 赖声礼[1] 

机构地区：[1]华南理工大学电子与信息学院,广州510640

出　　处：《科学技术与工程》2009年第22期6822-6825,6836,共5页Science Technology and Engineering

基　　金：国家高新技术研究发展计划(863计划);重大科技项目(2008AA04A103)资助

摘　　要：设计并实现了一种RFID阅读器近场耦合天线,并对该天线的阻抗特性和辐射特性进行了理论计算和仿真。使用了折叠偶极子天线结构,极大减小了天线尺寸。同时在天线臂之间加入了寄生电容,实现阻抗调整的作用。在仿真的基础上,实际制作了实物,并接上UHF近场耦合阅读器进行测试,效果良好。A kind of UHF near-field RFID reader antenna is andyzed and implemented. Moreover, the impedance and radicalization feature of this antenna are calecutated and simulated theoretically. The structure of folded-dipole is used and so the dimension of this antenna largely is reduced. A parasitic capacitance patch on the rear of the layer is inserted in order to adjust the impedance of antenna. On the basis of simulation, this antenna is coneet to UHF near-field RFID reader to test this antenna, the test result is good.

关 键 词：偶极子天线 近场耦合 寄生电容 射频识别 

分 类 号：TN821.4[电子电信—信息与通信工程]