无源高频RFID系统读写器天线的设计  

The Design for High-frequency Reader Antenna on Passive Inductive RFID

作　　者：李宝山[1] 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《无线电工程》2008年第5期35-38,共4页Radio Engineering

摘　　要：基于无源电感耦合RFID系统的工作模式,推导出高频段读写器近场小环形天线的磁感应强度和天线端电压的算法,提出一种天线的设计方法,并对其主要参数的选定、工作性能受工作环境的影响等问题进行了分析。工作在不同频段的RFID系统,由于工作条件的差异,其天线的等效模型和设计方法不尽相同。所提出的高频读写器天线的设计方法简便、有效,适于读些距离小于1m的应用环境,可作为工程设计的参考依据。Based on the working mode of inductively coupled passive RFID systems, an algorithm of magnetic flux density and antenna terminal voltage for near-field antenna small annular of high frequency reader was derived. An antenna design method was presented. This paper analyzed the selection of main parameters and affect of the working environment over the performance. The antenna equivalent model and design methods of RFID systems working in different bands varies due to differences in conditions. The proposed high-frequency reader antenna design method is simple and effective, suitable for reading more than a meter away from the application environment. It can be used for reference in engineering design.

关 键 词：射频识别 读写器 小环形天线 

分 类 号：TN927.2[电子电信—通信与信息系统]