金属环境对HF频段RFID系统的影响  

Effect of Metal Environment on HF RFID Systems

作　　者：朱海龙[1] 赖晓铮[1] 戴宏跃[1] 赖声礼[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2008年第5期84-88,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：广东省珠海市科技攻关项目(PC200320010)

摘　　要：为实现HF频段RFID系统在金属环境下的正常工作,采用HFSS 9.0为仿真工具,研究金属物体对HF频段RFID系统工作性能的影响,对中距离HF频段RFID系统在金属环境中的工作进行数值仿真分析,得出了读写器天线的磁场分布特性,根据仿真结果对铁氧体吸波材料标签和立体标签的设计方法进行了讨论,同时提出全向标签的概念.所得出的解决方法适用于在金属环境下工作的标签的设计.In order to ensure the high-frequency（HF） Radio Frequency Identification（RFID） in metal environment,the effect of metal plate on the performance of HF RFID system is first simulated by means of HFSS9.0,and the operation of middle-range HF RFID system in metal environment is numerically simulated and analyzed.Then,the distribution characteristics of the magnetic field of reader antenna are provided,and two solutions to the metal plate effect respectively based on the ferrite absorber and on the dimensional tag are discussed.Finally,the concept of omnidirectional tag is presented.The above-mentioned results are proved feasible in the design of tags used in metal environment.

关 键 词：射频识别 金属 铁氧体 立体标签 全向标签 

分 类 号：TN820.1[电子电信—信息与通信工程]