Solution of measuring the impedance of encapsulated RFID chip

Yang, Zheng; Li, Xiuping

doi:10.1109/icmmt.2010.5524916

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…지금까지 마운트 된 칩의 임피던스 값을 직접 측 정하려는 연구들과 [4]～ [7], [16] 리더와 태그 사이의 프로 토콜 파라미터에 대한 최적값을 구하려는 노력이 있 었다 [8], [9] . 하지만 칩 임피던스 산출 방법과 프로토콜 파라미터가 최대 인식 거리와의 직접적인 상관관계 에 대한 연구는 전무한 실정이다.…”

Section: 칩 제조회사에서 제공하는 데이터 시트(Dataunclassified

Impedance Evaluation Method of UHF RFID Tag Chip for Maximum Read Range

Sim¹,

Yang²

2013

The Journal of Korean Institute of Electromagnetic Engineering

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In a passive UHF RFID system, the impedance matching between tag antenna and chip as well as the protocol parameter settings in a reader plays important role in determination of the maximum read-range. Almost no paper, however, has dealt with the above issues in relation with the maximum read range. In this paper, two known methods (of using the value from data sheets and proprietary RFID tester) and our proposing method in chip impedance evaluation are compared in terms of maximum read range. The read range of tags whose antenna impedance is conjugate matched with the chip impedance obtained from the proposed method is improved maximum 73 % more than that of tags from the other methods. . ⓒ

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Section: 칩 제조회사에서 제공하는 데이터 시트(Dataunclassified

Impedance Evaluation Method of UHF RFID Tag Chip for Maximum Read Range

Sim¹,

Yang²

2013

The Journal of Korean Institute of Electromagnetic Engineering

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Wireless UHF RFID chip impedance measurement by only using an RFID reader

Heiss

Fischer

2012

2012 6th European Conference on Antennas and Propagation (EUCAP)

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A main task in RFID chip design is the determination of its input impedance. Standard methods involving the use of a state-of-the-art network analyzer require expensive equipment. Here a new approach is proposed to determine the chip impedance by measuring the activation power or distance with a standard RFID reader. The RFID chip is connected to several antennas with different impedances and for each the activation power or distance is determined. From these measurements the chip impedance can be calculated

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Solution of measuring the impedance of encapsulated RFID chip

Cited by 2 publications

References 11 publications

Impedance Evaluation Method of UHF RFID Tag Chip for Maximum Read Range

Impedance Evaluation Method of UHF RFID Tag Chip for Maximum Read Range

Wireless UHF RFID chip impedance measurement by only using an RFID reader

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