华南理工大学学报(自然科学版) ›› 2016, Vol. 44 ›› Issue (5): 73-77.doi: 10.3969/j.issn.1000-565X.2016.05.011

• 电子、通信与自动控制 • 上一篇    下一篇

一种具有应用普适性的 RFID 标签天线

熊雄1洪卫军2† 赵振涛2 谢胜利3   

  1. 1. 华南理工大学 电子与信息学院,广东 广州 510640; 2. 北京邮电大学 网络体系构建与融合北京市重点实验室, 北京 100876; 3. 广东工业大学 自动化学院,广东 广州 510006
  • 收稿日期:2015-09-02 修回日期:2015-12-09 出版日期:2016-05-25 发布日期:2016-04-12
  • 通信作者: 洪卫军(1982-),男,讲师,主要从事超材料、物联网技术和天线设计研究. E-mail:hongwj@bupt.edu.cn
  • 作者简介:熊雄(1973-),男,博士生,主要从事 RFID 系统设计与无线电测试技术研究. E-mail:xxiong@ gd. gov. cn
  • 基金资助:
    国家自然科学基金资助项目(61427801)

An RFID Tag Antenna with Application Universality

XIONG Xiong1 HONG Wei-jun2 ZHAO Zhen-tao2 XIE Sheng-li3   

  1. 1.School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China; 2.Beijing Key Laboratory of Network System Architecture and Convergence,Beijing University of Posts and Telecommunication,Beijing 100876,China; 3.College of Automation,Guangdong University of Technology,Guangzhou 510006,Guangdong,China
  • Received:2015-09-02 Revised:2015-12-09 Online:2016-05-25 Published:2016-04-12
  • Contact: 洪卫军(1982-),男,讲师,主要从事超材料、物联网技术和天线设计研究. E-mail:hongwj@bupt.edu.cn
  • About author:熊雄(1973-),男,博士生,主要从事 RFID 系统设计与无线电测试技术研究. E-mail:xxiong@ gd. gov. cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(61427801)

摘要: 为使标签可以对任意材料物品进行标识,且使天线具有较高的增益,设计了一种新的具有普适性的特高频(UHF)射频识别(RFID)标签天线. 该天线由一对 1/4 波长的矩形贴片构成类偶极子辐射体,通过悬浮于其上层的环形走线进行感性耦合馈电,实现与RFID 标签芯片的共轭匹配. 实验结果表明:该天线适用于全球范围的射频识别系统(840 ~960MHz),贴附于不同材料表面上时均有 2. 0dBi 左右的增益,获得稳定的识别距离;当标签贴附于衣服、图书等介质材料上时,天线可获得全向的辐射方向图;当标签贴附于良导体表面时,天线可获得垂直于导体表面的半功率角为 70°的方向性辐射方向图.

关键词: 射频识别, 贴片天线, 标签天线

Abstract: In order to implement stable identification of objects with different materials,a novel UHF (Ultrahigh Frequency) RFID (Radio Frequency Identification) tag antenna with steady and high gain is proposed.The antenna consists of a pair of quarter-wavelength rectangular patch working as a radiation unit of dipole antenna and an inductive feeding loop suspending on the patch plane.Thanks to the significant induction introduced by the loop,conjugate matching to chip impedance can be achieved.Experimental results show that the proposed tag antenna covers the worldwide RFID bands in UHF range (840 ~960MHz) and helps obtain a gain of about 2. 0dBi as well as a stable recognition distance for different dielectric materials.Moreover,it is found that,when the tag antenna is mounted on such dielectric materials as clothes and books,the radiation pattern shows omnidirectional; while when it is mounted on conductors with consistent gain,the radiation pattern shows directional with a half power beamwidth of 70°.

Key words: radio frequency identification, patch antenna, tag antenna

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