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Determination of the optimal carrier frequency in harsh environments by parameter estimation

: Jacobi, Rebekka C.; Süss, Andreas; Bögel, Gerd vom; Kolossa, Dorothea

Informationstechnische Gesellschaft im VDE:
Smart SysTech 2015. European Conference on Smart Objects, Systems and Technologies. CD-ROM : June 16 - 17, 2015 in Aachen, Germany
Berlin: VDE-Verlag, 2015 (ITG-Fachbericht 259)
ISBN: 978-3-8007-3996-7
7 pp.
European Conference on Smart Objects, Systems and Technologies (Smart SysTech) <2015, Aachen>
Conference Paper
Fraunhofer IMS ()
RFID; sensors; inductive power transmission

Transponders in harsh medical or industrial environments are often embedded in or covered by metal. Eddy currents in conductive materials affect significantly the transmission of energy to a RFID or sensor transponder. With the help of a parameter estimation the carrier frequency can be adapted to optimally supply the transponder with energy. This adaption leads, in cases where state-of-the-art systems do not find the optimum, to a significant improvement of the energy supply. Finally, efficient approaches are given to implement this technique in a real-time application for mobile readers.