WPT and NFC Interoperability for Wearables with Miniaturized Coils

Richard Fischbacher; Jose Romero Lopera; David Pommerenke; Ralph Prestros; Bernhard Auinger; Wolfgang Bosch; Jasmin Grosinger

doi:10.1109/RFID-TA58140.2023.10290616

WPT and NFC Interoperability for Wearables with Miniaturized Coils

Richard Fischbacher^*, Jose Romero Lopera, David Pommerenke, Ralph Prestros, Bernhard Auinger, Wolfgang Bosch, Jasmin Grosinger

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

This work presents a circuit-level interoperability investigation of a wireless power transfer (WPT) and near-field communication (NFC) system using miniature coils suited for wearables. Interoperability could enable NFC to provide a communication link for a WPT system or enable secure pairing between a wearable and a WPT transmitter. The WPT and NFC circuitries are built in a circuit-level simulation tool. The coils are modeled by a broadband equivalent circuit model, which excellently agrees with measurements from 0.1 to 500 MHz. The resulting equivalent circuit model is used to investigate the tag-to-reader communication quality via in-phase (I) and quadrature-phase (Q) demodulation and signal constellation diagrams. It is shown that applying inductive decoupling techniques between WPT and NFC coils and altering the I/Q demodulation filter cut-off frequency can significantly improve the tag-to-reader communication quality.

Original language	English
Title of host publication	2023 IEEE 13th International Conference on RFID Technology and Applications, RFID-TA 2023 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers
Pages	33-36
Number of pages	4
ISBN (Electronic)	9798350333534
DOIs	https://doi.org/10.1109/RFID-TA58140.2023.10290616
Publication status	Published - 2023
Event	13th IEEE International Conference on RFID Technology and Applications: RFID-TA 2023 - Aveiro, Portugal Duration: 4 Sept 2023 → 6 Sept 2023

Conference

Conference	13th IEEE International Conference on RFID Technology and Applications
Country/Territory	Portugal
City	Aveiro
Period	4/09/23 → 6/09/23

Keywords

Interoperability
NFC
WPT

Fields of Expertise

Information, Communication & Computing

Access to Document

10.1109/RFID-TA58140.2023.10290616

Cite this

Fischbacher, R., Lopera, J. R., Pommerenke, D., Prestros, R., Auinger, B., Bosch, W., & Grosinger, J. (2023). WPT and NFC Interoperability for Wearables with Miniaturized Coils. In 2023 IEEE 13th International Conference on RFID Technology and Applications, RFID-TA 2023 - Proceedings (pp. 33-36). Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/RFID-TA58140.2023.10290616

WPT and NFC Interoperability for Wearables with Miniaturized Coils. / Fischbacher, Richard; Lopera, Jose Romero; Pommerenke, David et al.
2023 IEEE 13th International Conference on RFID Technology and Applications, RFID-TA 2023 - Proceedings. Institute of Electrical and Electronics Engineers, 2023. p. 33-36.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Fischbacher, R, Lopera, JR, Pommerenke, D , Prestros, R , Auinger, B , Bosch, W & Grosinger, J 2023, WPT and NFC Interoperability for Wearables with Miniaturized Coils. in 2023 IEEE 13th International Conference on RFID Technology and Applications, RFID-TA 2023 - Proceedings. Institute of Electrical and Electronics Engineers, pp. 33-36, 13th IEEE International Conference on RFID Technology and Applications, Aveiro, Portugal, 4/09/23. https://doi.org/10.1109/RFID-TA58140.2023.10290616

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title = "WPT and NFC Interoperability for Wearables with Miniaturized Coils",

abstract = "This work presents a circuit-level interoperability investigation of a wireless power transfer (WPT) and near-field communication (NFC) system using miniature coils suited for wearables. Interoperability could enable NFC to provide a communication link for a WPT system or enable secure pairing between a wearable and a WPT transmitter. The WPT and NFC circuitries are built in a circuit-level simulation tool. The coils are modeled by a broadband equivalent circuit model, which excellently agrees with measurements from 0.1 to 500 MHz. The resulting equivalent circuit model is used to investigate the tag-to-reader communication quality via in-phase (I) and quadrature-phase (Q) demodulation and signal constellation diagrams. It is shown that applying inductive decoupling techniques between WPT and NFC coils and altering the I/Q demodulation filter cut-off frequency can significantly improve the tag-to-reader communication quality.",

keywords = "Interoperability, NFC, WPT",

author = "Richard Fischbacher and Lopera, {Jose Romero} and David Pommerenke and Ralph Prestros and Bernhard Auinger and Wolfgang Bosch and Jasmin Grosinger",

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doi = "10.1109/RFID-TA58140.2023.10290616",

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AU - Fischbacher, Richard

AU - Lopera, Jose Romero

AU - Pommerenke, David

AU - Prestros, Ralph

AU - Auinger, Bernhard

AU - Bosch, Wolfgang

AU - Grosinger, Jasmin

PY - 2023

Y1 - 2023

N2 - This work presents a circuit-level interoperability investigation of a wireless power transfer (WPT) and near-field communication (NFC) system using miniature coils suited for wearables. Interoperability could enable NFC to provide a communication link for a WPT system or enable secure pairing between a wearable and a WPT transmitter. The WPT and NFC circuitries are built in a circuit-level simulation tool. The coils are modeled by a broadband equivalent circuit model, which excellently agrees with measurements from 0.1 to 500 MHz. The resulting equivalent circuit model is used to investigate the tag-to-reader communication quality via in-phase (I) and quadrature-phase (Q) demodulation and signal constellation diagrams. It is shown that applying inductive decoupling techniques between WPT and NFC coils and altering the I/Q demodulation filter cut-off frequency can significantly improve the tag-to-reader communication quality.

AB - This work presents a circuit-level interoperability investigation of a wireless power transfer (WPT) and near-field communication (NFC) system using miniature coils suited for wearables. Interoperability could enable NFC to provide a communication link for a WPT system or enable secure pairing between a wearable and a WPT transmitter. The WPT and NFC circuitries are built in a circuit-level simulation tool. The coils are modeled by a broadband equivalent circuit model, which excellently agrees with measurements from 0.1 to 500 MHz. The resulting equivalent circuit model is used to investigate the tag-to-reader communication quality via in-phase (I) and quadrature-phase (Q) demodulation and signal constellation diagrams. It is shown that applying inductive decoupling techniques between WPT and NFC coils and altering the I/Q demodulation filter cut-off frequency can significantly improve the tag-to-reader communication quality.

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BT - 2023 IEEE 13th International Conference on RFID Technology and Applications, RFID-TA 2023 - Proceedings

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WPT and NFC Interoperability for Wearables with Miniaturized Coils

Abstract

Conference

Keywords

Fields of Expertise

Access to Document

Other files and links

Fingerprint

Wireless Power Transmission for Sustainable Electronics (WIPE)

Radio Frequency Identification (RFID) Technologies

Cite this

WPT and NFC Interoperability for Wearables with Miniaturized Coils

Abstract

Conference

Keywords

Fields of Expertise

Access to Document

Other files and links

Fingerprint

Projects

Wireless Power Transmission for Sustainable Electronics (WIPE)

Radio Frequency Identification (RFID) Technologies

Cite this