Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (6): 8-12.doi: 10.16180/j.cnki.issn1007-7820.2020.06.002

Previous Articles     Next Articles

Design of Chipless RFID Tag Based on Hybrid Coding

SUN Haijing,CHEN Qiang,YANG Jiao,ZHOU Ling   

  1. School of Electronic and Electric Engineering,Shanghai University of Engineering Science,Shanghai 201620,China
  • Received:2019-04-15 Online:2020-06-15 Published:2020-06-18
  • Supported by:
    National Natural Science Foundation of China(61272097);Key Project of Shanghai Municipal Science and Technology Committee(18511101600)

Abstract:

In order to reduce the cost of traditional RFID tags and improve the tag coding capacity, by using the method of mixed coding of amplitude and frequency position, a chipless RFID tag with large capacity coding function was designed, which was composed of microstrip main transmission line, ultra-wideband antenna with orthogonal transceiver and resonator with different length. Simulation and test results showed that in the 2.37 6.17 GHz frequency band, the encoding capacity of 20 bit could be obtained, and the encoding capacity of 60 bits could be obtained after mixed encoding. The 8 bit chip-less label of the three coding states measured in the field showed that the position of the resonance point only fluctuates within a small range of 10 MHz, which ensured the accurate identification of the resonance point and realized the preset coding function. This kind of chipless label with large capacity coding function could reduce the cost of the IOT system and replace the laser bar code in the field of logistics.

Key words: chipless tag, helical resonator, hybrid coding, resonant frequency, internet of things, radio frequency identification

CLC Number: 

  • TN926