双频RFID阅读器天线的设计  

Design of a dual-band RFID reader antenna

作　　者：周云艳 苗文帆 ZHOU Yunyan;MIAO Wenfan(College of Mechanical and Electrical Engineering,Huangshan University,Huangshan 245041,China)

机构地区：[1]黄山学院机电工程学院,安徽黄山245041

出　　处：《邵阳学院学报（自然科学版）》2022年第2期22-27,共6页Journal of Shaoyang University：Natural Science Edition

基　　金：安徽省高校自然科学研究项目(KJHS2020B14);安徽省大学生创新创业教育训练计划项目(S202010375051)。

摘　　要：RFID阅读器的天线设计直接决定了阅读器的性能。采用单层FR4介质基板,设计一种双频RFID阅读器天线,通过在辐射贴片中间刻蚀1个四角星和4个边分别刻蚀半个四角星,实现尺寸缩小以及双频的覆盖。通过仿真调试,天线的几何尺寸为68 mm×68 mm×1.6 mm。通过加工与实测,天线的工作频段为0.920~0.935 GHz和2.40~2.51 GHz,相对阻抗带宽分别为1.73%和4.49%,在工作频段内有良好的辐射特性,能够满足手持式RFID阅读器天线低成本小型化的要求。The properties of RFID reader are directly determined by the antenna design.The dual-band RFID reader antenna adopted a single-layer substrate of FR4 medium.A four-angle star was cut in the middle of the radiation patch,and a half-four-angle star was slotted on each side.Then the size reduction and dual-band coverage were realized.Through simulation and analysis,the geometric size of the antenna is 68 mm×68 mm×1.6 mm.After processing and characteristion,it is revealed that the operating bands are 0.920~0.935 GHz and 2.40~2.51 GHz,and the relative impedance bandwidths are 1.73%and 4.49%respectively.Also,the antenna has good radiation characteristics in the operating bands.The antenna can meet the requirements of the handheld RFID reader antenna with low cost and minimization.

关 键 词：RFID阅读器 双频带 小型化 微带天线 

分 类 号：TN82[电子电信—信息与通信工程]