MO2.L2.1
WPT AND NFC INTEROPERABILITY FOR WEARABLES WITH MINIATURIZED COILS
Richard Bernd Fischbacher, Jose Romero Lopera, David Pommerenke, Graz University of Technology, Austria; Ralph Prestros, Bernhard Auinger, Silicon Austria Labs, Austria; Wolfgang Bösch, Jasmin Grosinger, Graz University of Technology, Austria
Session:
MO2.L2: Wireless Power Transfer and low-power applications Oral
Track:
Energy Harvesting and Wireless Power Transfer
Location:
Room 2
Presentation Time:
Mon, 4 Sep, 11:40 - 12:00 Portugal Time (UTC +1)
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.
Presentation
Discussion
Resources
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Session MO2.L2
MO2.L2.1: WPT AND NFC INTEROPERABILITY FOR WEARABLES WITH MINIATURIZED COILS
Richard Bernd Fischbacher, Jose Romero Lopera, David Pommerenke, Graz University of Technology, Austria; Ralph Prestros, Bernhard Auinger, Silicon Austria Labs, Austria; Wolfgang Bösch, Jasmin Grosinger, Graz University of Technology, Austria
MO2.L2.2: PLANAR ROTATING MAGNETIC FIELD INSIDE A CUBIC STRUCTURE FOR RFID/NFC APPLICATIONS
Jie Sun, Antoine Diet, Yann Le Bihan, Marc Biancheri-Astier, Chadi Gannouni, Michel Police, GeePS, France
MO2.L2.3: Low-Power Ultrasonic Wake-Up through Metal
Thomas Schaechtle, Fabian Höflinger, University of Freiburg, Germany; Georg K. J. Fischer, Fraunhofer Institute for High-Speed Dynamics, Germany; Jan Helmerich, University of Freiburg, Germany; Ivo Häring, Fraunhofer Institute for High-Speed Dynamics, Germany; Stefan J. Rupitsch, University of Freiburg, Germany
MO2.L2.4: EXPLOITING SELF-TUNABLE RFID CHIPS FOR WIRELESS SENSING OF PERMITTIVITY TO ENABLE PASSIVE LOW-COST FOOD-QUALITY MONITORING SYSTEMS
Francesco Piccinno, University of Salento, Italy; Federica Naccarata, University of Rome Tor Vergata, Italy; Riccardo Colella, Francesco Paolo Chietera, Luca Catarinucci, University of Salento, Italy; Gaetano Marrocco, University of Rome Tor Vergata, Italy