用于小型化RFID阅读器的两种天线  

Two Kinds of Antennas for Miniature RFID Reader

作　　者：宋朝晖[1] 袁乐[1] 刘赢红[1] 

机构地区：[1]哈尔滨工业大学电子与信息工程学院,黑龙江哈尔滨150001

出　　处：《南京理工大学学报》2011年第1期108-112,共5页Journal of Nanjing University of Science and Technology

基　　金：航空科学基金(20080177011);哈尔滨工业大学科研创新基金(20090118)

摘　　要：为满足超高频(UHF)频段射频识别(RFID)阅读器小型化设计要求,提出了两种天线的小型化设计方法。通过在贴片四周开槽的方法,实现平面倒F天线(PIFA)小型化;采用两条四分之一波长缝隙加载增加缝隙天线的谐振回路,增加了天线的带宽。对比分析了天线各个设计参数对辐射特性的影响,仿真和实测结果表明,这两种天线具有较好的增益和带宽特性。To meet the design requirements of the miniaturization of ultra high frequency（UHF）band radio frequency identification（RFID）reader,this paper presents two miniaturization design methods of antenna.The miniaturization of planar inverted-F-antenna（PIFA）can be achieved through slotting along the edges of the patch all around.Two quarter wavelength slits are added on a slot antenna to increase resonant paths which can widen the band of the antenna.Effects of various parameters on antenna performance are analyzed and compared,and the results of simulation and experiment show that the two antennas work in the UHF band with eligible gain and bandwidth characteristics.

关 键 词：射频识别 小型化阅读器 平面倒F天线 双缝隙天线 

分 类 号：TN82[电子电信—信息与通信工程]