Institute of Microsystems Engineering IMTEK Laboratory for Electrical Instrumentation University of Freiburg, Germany
Received: 18 Dec 2012 – Revised: 21 Mar 2013 – Accepted: 10 Apr 2013 – Published: 02 May 2013
Abstract. In this work we present near-field wireless sensing of single and multiple open-ended micro coils using an electrically small loop antenna. Wirelessly characterized parameters of open-ended micro coils include its resonance frequency, quality factor and inductance. Moreover a wireless frequency-dependent analytical model was developed. Micro coil inductance was extracted from the wirelessly measured signal using a constraint-based least-squares approach. Wireless measurements and analytical fit of micro coils are in strong agreement which validates the analytical model. Finite element method (FEM) simulations of the coupled system were done in COMSOL Multiphysics.
Yousaf, A., Boccard, J. M., Khan, F. A., and Reindl, L. M.: Near-field wireless sensing of single and multiple open-ended micro coils, J. Sens. Sens. Syst., 2, 35-43, doi:10.5194/jsss-2-35-2013, 2013.