新型小型化双频RFID微带天线设计  

Design of a novel broad and dual band RFID microstrip antenna

作　　者：南敬昌[1] 吴炜圣 NAN Jingchang;WU Weisheng(College of Electronic and Information Engineering,Liaoning Technical University,Huludao 125105,Liaoning Province,China)

机构地区：[1]辽宁工程技术大学电子与信息工程学院

出　　处：《电子元件与材料》2019年第7期85-89,共5页Electronic Components And Materials

基　　金：国家自然科学基金(61372058);国家自然科学基金青年科学基金(61701211);辽宁省高校重点实验室项目(LJZS007)

摘　　要：针对当前读写器天线存在尺寸较大、设计成本较高的问题,设计了一款适用于UHF频段和ISM频段的小型化双频单层手持读写器天线。天线采用FR4介质层,首先在辐射贴片中间开正方形槽并在辐射贴片上分别开四边狭缝和四角狭缝,实现天线的双频和小型化,然后对天线结构中的各个参数进行仿真分析,最终确定天线各个参数取值,并制作出实物进行测试。测试结果表明,天线工作频段为910~938MHz和2.42~2.48GHz,阻抗带宽分别为28MHz和60MHz,最大增益分别为-1.68dB和-2.67dB,所以本文设计天线符合UHF频段和ISM频段的要求。天线的尺寸为72mm×72mm×3mm,与其他同类型天线相比体积更小,且采用单层设计,使设计成本有所降低。Due to their bulky size and costly design,here was designed a miniaturized dual-band single-layer handheld reader antenna,which are suitable for UHF band and ISM band.In this design,FR4 dielectric layer was used.Firstly,a square slot was cut in the middle of the radiation patch,and a four-sided slot and a four-corner slot were then separately cut on the radiation patch to realize the dual-band and miniaturization of the antenna.Secondly,the parameters of the antenna structure were simulated and analyzed.Finally,the antenna was manufactured for testing according to the optimal simulated parameters.The test results show that the operating band of the antenna are 910-938 MHz and 2.42-2.48 GHz,the impedance bandwidth are 28 MHz and 60 MHz,and the maximum gain are-1.68 dB and-2.67 dB,which meet the requirements of UHF band and ISM band.The size of the antenna is 72 mm×72 mm×3 mm,which is smaller than that of other antennas of the same type.Moreover,the antenna adopts single-layer design,which reduces the design cost.

关 键 词：射频识别 微带天线 读写器天线 小型化 双频 开槽 

分 类 号：TN713[电子电信—电路与系统]