The Journal of China Universities of Posts and Telecommunications ›› 2023, Vol. 30 ›› Issue (5): 72-92.doi: 10. 19682 / j. cnki. 1005-8885. 2023. 0008

• Wireless • Previous Articles     Next Articles

Review of reader antennas for UHF RFID systems


  1. 1. State Key Laboratory of Information Photonics and Optical Communications, Beijing 100876, China
    2. Key Laboratory of Universal Wireless Communications of Ministry of Education, Beijing 100876, China
    3. Beijing Key Laboratory of Work Safety Intelligent Monitoring, Beijing 100876, China
    4. School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2023-04-04 Revised:2023-06-13 Online:2023-10-31 Published:2023-10-30
  • Supported by:
    the National Natural Science Foundation of China (61971051).


   Radio-frequency identification (RFID) antennas are critical components in wireless communication networks for the Internet of things (IoT). The RFID systems make it possible to realize the dynamic interconnection of various things. To better summarize the operating principles of the RFID antennas and associate antennas with specific complex applications, a review of RFID systems and antennas is necessary. In this paper, a review of reader antennas for ultra-high frequency ( UHF) RFID systems is presented, and the categories of RFID systems are summarized for the first time. The antennas are classified according to the reading region and operating principle. The reading region determines the most crucial performance that should be concentrated on when designing an antenna, while the operating principle affects the current distribution on the surface of the antenna, and further the electromagnetic radiation. By the summary of the RFID systems and antennas, the understanding of future researchers on the operating principles of the RFID antennas could be facilitated, which can be helpful in the advanced design and implementation of RFID antennas. In addition, taking engineering requirements into account, the future prospective of RFID applications is discussed, as well as the challenges to be addressed.

Key words: radio frequency identification (RFID), near-field, antenna, ultra-high frequency (UHF), RFID system