Journal of South China University of Technology (Natural Science Edition) ›› 2016, Vol. 44 ›› Issue (5): 73-77.doi: 10.3969/j.issn.1000-565X.2016.05.011

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

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)

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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

CLC Number: