基于Tip-Loading与锥形Meander T-Match的小型化全向标签天线设计  被引量:1

Design of miniaturized omnidirectional tag antenna based on Tip-Loading and tapered Meander T-Match

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作  者:刘晓毅 贺君 邓永和[1] LIU Xiaoyi;HE Jun;DENG Yonghe(School of Computational Science and Electronics,Hunan Institute of Engineering,Xiangtan 411104,Hunan Province,China)

机构地区:[1]湖南工程学院计算科学与电子学院,湖南湘潭411104

出  处:《电子元件与材料》2022年第10期1093-1098,共6页Electronic Components And Materials

基  金:湖南省自科科学基金(2021JJ40152);湖南省研究生科研创新项目(CX20211264)。

摘  要:针对现有超高频射频识别(UHF-RFID)天线存在尺寸偏大以及因全向性差而读取不稳定的问题,通过设计锥形折叠T型匹配(Meander T-Match)和对称Tip-Loading结构,能将天线尺寸小型化至36 mm×30 mm×1.6 mm,并达到增大E面波瓣宽度与天线增益的目的,设计了小型化全向标签天线。仿真结果表明,谐振频点为923 MHz时天线反射系数S_(11)为-36.5 dB,该频点处增益可达1.71 dB,有效工作带宽覆盖863~936 MHz(S_(11)<-10 dB)且辐射全向性优异。采用差分探针测试法测试天线反射系数S_(11),结果与仿真数据比较吻合,验证了天线阻抗匹配良好。在高增益和宽工作带宽下,小型化和优异的全向性使该天线具有潜在应用前景。To address the size and poor omni-directional induced unstable reading problems,a small omnidirectional antenna was designed.By utilizing the tapered Meander T-Match and symmetrical Tip-Loading structure,the antenna can be reduced to 36 mm×30 mm×1.6 mm,meanwhile the width of E-plane lobe and antenna gain can be increased.The simulation results show that antenna reflection coefficient S_(11) is-36.5 dB at the resonant frequency of 923 MHz with gain up to 1.71 dB.The effective bandwidth covers from 863 MHz to 936 MHz with excellent radiation omni-directivity.By utilizing differential probe test method,the antenna reflection coefficient S_(11) was measured.The reflection loss test results are consistent with the simulated results.This result verifies the good impedance matching on the antenna.This proposed antenna with miniaturization and excellent omni-directivity have potential applications for high gain and wide bandwidth.

关 键 词:标签天线 射频识别 锥形 折叠 T匹配 全向性 

分 类 号:TN823[电子电信—信息与通信工程]

 

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