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Inverse load modulation circuit concept for passive RFID transponder

Lastmodulation in passiv gekoppelten HF RFID-Transpondern

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Summary

This paper addresses a new shunt regulation and modulation control concept to reduce parasitic self heating effects and improve communication distances in passive HF RFID systems. A new circuit design for low antenna voltages in RFID tags is presented. For tag to reader communication the principle of inverse load modulation is applied.

Zusammenfassung

Der Artikel beschreibt ein neues Längsregler- und Modulationskonzept zur Verbesserung der Eigenerwärmungsproblematik und Erhöhung der Systemreichweite für passiv gekoppelte HF RFID-Systeme. Weiters wird ein neues Schaltungskonzept für kleine Antennenspannungen präsentiert und inverse Lastmodulation für die Rückantwort des Tags eingeführt.

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References

  • Berger, D. (2004): Contactless Data Transmission Method and use thereof. Patent Pending, WO 2004/055712 A1. Infineon Technologies AG.

  • Finkenzeller, K. (2003): RFID Handbook. Fundamentals and Applications in Contactless Smart Cards and Identification, 2nd ed. John Wiley and Sons.

  • International Standard ISO/IEC 15693 Part 1–4: Identification cards – Contactless integrated circuit(s) cards – Vicinity cards, International Standard.

  • International Standard, ISO/IEC 10373 Part 7: Identification cards – Test methods – Vicinity cards, International Standard.

  • Missoni, A., Klapf, C., Holweg, G. (2007): Dual frequency comprehensive transponder with inverse load modulation. EURASIP Workshop on RFID Technology, Vienna, 2007.

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Authors and Affiliations

  1. Institute of Electronics, Graz University of Technology, Graz, Austria

    Ch. Klapf, A. Missoni & W. Pribyl

  2. Schloss Metahof, Infineon Technologies Austria AG Development Center Graz, Graz, Austria

    G. Holweg & G. Hofer

Authors
  1. Ch. Klapf
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  2. A. Missoni
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  3. W. Pribyl
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  4. G. Holweg
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  5. G. Hofer
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Klapf, C., Missoni, A., Pribyl, W. et al. Inverse load modulation circuit concept for passive RFID transponder. Elektrotech. Inftech. 124, 359–363 (2007). https://doi.org/10.1007/s00502-007-0484-x

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  • DOI: https://doi.org/10.1007/s00502-007-0484-x

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