The Journal of Korean Institute of Electromagnetic Engineering and Science (한국전자파학회논문지)

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Modelling Method for Removing Measurement Uncertainty in Chip Impedance Characterization of UHF RFID Tag IC

UHF RFID 태그 칩의 임피던스 산출 불확실성 제거를 위한 모델링 방법

  • Yang, Jeenmo (School of Electronic and Electrical Engineering, Daegu University)
  • 양진모 (대구대학교 전자전기공학부)
  • Received : 2014.10.17
  • Accepted : 2014.11.25
  • Published : 2014.12.31
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Abstract

Input impedance of UHF RFID tag chip is needed to design a tag. In determining the chip impedance, direct measurement method is adopted commonly. In this paper, problems generated from fixtures that interface between tag chip and coaxial-oriented measurement instrument are investigated and the result of the problems is shown, when the direct measurement method is applied. As an alternative to the method, a modeling method is proposed and its validity and accuracy are shown.

UHF RFID 태그를 설계하기 위해서는 태그 칩의 입력 임피던스 값이 필요하다. 입력 임피던스 산출에는 직접측정 방법이 보편적으로 사용되고 있다. 본 연구에서는 이 방법을 사용할 경우, 칩을 측정장치에 연결하기 위해 도입되는 픽스쳐에서 발생되는 문제점을 분석하고, 그 결과를 확인하였다. 이 문제를 근본적으로 피해갈 수 있는 대안으로 모델링 방법을 제안하고, 실험을 통해 타당성과 정확도를 확인하였다.

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References

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