FACTA UNIVERSITATIS SERIES: ELECTRONICS AND ENERGETICS
Editor-in-Chief: V.S.STOJANOVIC, email: vitko@elfak.ni.ac.yu University of Niš, Serbia Corresponding address: Faculty of Electronic Engineering, Department of Electronics, Beogradska 14, P.O. Box 73, 18000 Niš, Serbia Phone: +381-18-588-399 Fax: +381-18-588-442 Editorial Board: G.DIMIROVSKI, Istanbul, Turkey V.SHMERKO, Szczecin, Poland B.HARRISON, Brisbane, Australia N.STOJADINOVIC, Niš, Sebia J.M.KONTOLEON, Thessaloniki, Greece I.STOJANOVIC, Belgrade, Serbia B.LANKL, Neubiberg, Germany M.STOJIC, Belgrade, Serbia M.LUTOVAC, Belgrade, Serbia Z.TANG, Miyazaki-shi, Japan B.MILOVANOVIC, Niš, Serbia J.TSOUKALAS, Thessaloniki, Greece V.MILOSEVIC, Novi Sad, Serbia H.WONG, Hong Kong T.MURESAN, Timisoara, Romania W.WEBER Bochum, Germany J.NAHMAN, Belgrade, Serbia I.YATCHEV, Sofia, Bulgaria G.SCARBATA, Ilmenau, Germany Technical assistance: S.V.Nikolić, University of Niš
This publication was in part supported by the Serbian Scientific Fondation
Tehnical support: Z.A.Ilić, University of Niš, Serbia
Published by University of Niš, Univerzitetski trg 2, P.O. Box 123,18000 Niš, Serbia
© 2003 by University of Niš, Serbia. Enquiries concerning sale and distribution are to be addressed to the Publisher. Printed by -Unigraf- 18000 Niš, Serbia