1. 1University of Novi Sad, Faculty of Technical Sciences, Department of Electronics, Trg Dositeja Obradovića 6, 2100 Novi Sad, Serbia, Telephone: + 381 21 485 2543, Fax: + 381 21 475 0572
2. 2Vienna University of Technology, Institute of Sensor and Actuator Systems, Gusshausstrasse 27-29, A-1040 Vienna, Austria, Telephone: +31 58801 36616, Fax: +431 58801 36695