Effect of Printing Qualities on the Resonant Frequencies of Printed UHF RFID Tag Antennas

인쇄 UHF RFID 태그 안테나의 인쇄 품질에 따른 공진 주파수의 영향

  • Kim, Chung-Hwan (Nanomachine Research Division, Korea Institute of Machinery and Materials) ;
  • Lee, Yong-Shik (School of Electrical & Electronic Engineering, Yonsei University) ;
  • Kim, Young-Guk (School of Electrical & Electronic Engineering, Yonsei University) ;
  • Kim, Dong-Soo (Nanomachine Research Division, Korea Institute of Machinery and Materials)
  • 김충환 (한국기계연구원 나노기계연구본부) ;
  • 이용식 (연세대학교 전기전자공학부) ;
  • 김영국 (연세대학교 전기전자공학부) ;
  • 김동수 (한국기계연구원 나노기계연구본부)
  • Published : 2008.11.01

Abstract

Recently, a great deal of research is focused on the printed electronics. One of their mainly concerned products is printed RFID tag. RFID technology has attracted researchers and enterprises as a promising method for automatic identification, and they are expected to replace conventional bar codes in inventory tracking and management. The key to successful RFID technology lies in developing low-cost RFID tags and the first step in applying printing technology to RFID systems is to replace antennas that are conventionally produced by etching copper or aluminum. However, due to the printing quality variations, errors, and lower conductivity, the performance of the printed RFID antennas is lower than that of antennas manufactured by conventional etching methods. In this paper, the effect of variations in the printing conditions on the antenna performance is investigated. Three levels for each condition parameter is assumed and effect on the resonant frequency are examined experimentally based on orthogonal array. The most serious factor that affects the resonant frequency of the antenna is the non-uniformity of the edge and the resonant frequency is found to be lower as the non-uniformity increases.

Keywords

References

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