1. Chair of Communication Systems, University of Duisburg-Essen, Duisburg, Germany
2. Chair of Microsystem Technology, Ruhr-Universität Bochum, Bochum, Germany
3. General and Theoretical Electrical Engineering (ATE), CENIDE—Center for Nanointegration Duisburg-Essen, Faculty of Engineering, University of Duisburg-Essen, Duisburg, Germany