Determination of the Optimal Carrier Frequency in Harsh Environments by Parameter Estimation
Conference: Smart SysTech 2015 - European Conference on Smart Objects, Systems and Technologies
07/16/2015 - 07/17/2015 at Aachen, Germany
Proceedings: ITG-Fb. 259: Smart SysTech 2015
Pages: 7Language: englishTyp: PDFPersonal VDE Members are entitled to a 10% discount on this title
Jacobi, Rebekka Carmen; Suess, Andreas; Boegel, Gerd vom (Fraunhofer IMS, Institute for Microelectronic Circuits and Systems, Duisburg, Germany)
Kolossa, Dorothea (Institute of Communication Acoustics, Ruhr-Universität Bochum, Bochum, Germany)
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 adaptation 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.