偶极子RFID标签天线的优化设计与研究  

Design and Development of Dipole Antennas for Passive RFID Tags

作　　者：吕锋[1] 徐宇白[1] 

机构地区：[1]武汉理工大学信息工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2009年第3期351-353,357,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：国家"863计划"基金资助项目(2007AA12Z170)

摘　　要：针对灵活高效的射频识别(radio frequency identification,RFID)天线的需求逐年递增的现状,给出了无源RFID标签半波偶极子天线总体的设计方法。基于半波偶极子天线的特性以及天线的输入阻抗与RFID标签接收功率之间的对应关系,提出了一种应用于868～915MHz的RFID标签天线的优化设计方案,并通过仿真分析了天线的阻抗特性。该方案可使天线达到较高的输入阻抗来实现与一些RFID标签的匹配。Since the demand for flexible RFID （ radio frequency identification） antennas with higher efficiency has increased in the recent years, an overview of λ/2 dipole antennas design for passive RFID tags was presented. Based on the features of λ/2 dipole antennas and the relationship between antenna input impedance and tag received power, a structure of 3 -wire folded λ/2 dipole antennas for 868 MHz to 915 MHz RFID application was proposed to analyze the impedance feature by simulation. With this structure, high antenna input resistance will be achieved to realize impedance matching with some tag chips.

关 键 词：射频识别 偶极子天线 RFID标签 

分 类 号：TN823.3[电子电信—信息与通信工程]