Tunable Materials with Applications in Antennas and Microwaves

John N. Sahalos received B.Sc. degree in Physics, M.Sc. degree in Electronic Physics, BCE & MCE degrees in Civil Engineering, and Ph.D. in Electronic Physics from the Aristotle University of Thessaloniki (AUTH), Greece. Prof. Sahalos is with the Radio-Communications Laboratory at the AUTH, Greece and with the Department of Engineering at the University of Nicosia, Cyprus. For eight years he was a Professor in the ECE Department, University of Thrace, Greece, and Director at the Microwaves Laboratory. He was a visiting faculty member at Ohio State University, the University of Colorado, and the Technical University of Madrid. He was also on the board of directors of the National Research & Technology Committee of Greece and on the Board of Directors of OTE S.A., the largest telecommunications company in Southeast Europe. For more than 10 years, Prof. Sahalos was the president of the Greek committees of URSI. Also, he was a member of the committee and internal auditor of EurAAP (European Association of Antennas & Propagation). Besides his academic duties, he is now a Coordinator of the R&D advisory board at a high tech industry.Prof. Sahalos is an IEEE Life Fellow, an Honorary Fellow of the Electronic Physics Society, a Fellow of the Physical Society, and a member of the Technical Chamber of Greece. He is the author of four books, one in English (Wiley), and of more than 450 articles published in scientific literature. His research interests include antennas, radio communications, EMC/EMI, RFIDs, Microwaves, and Biomedical Engineering. With his colleagues, he designed innovative products like the EIT, the MLS, the ORAMA simulator and the SMS-K monitoring system. George A. Kyriacou was born in Famagusta, Cyprus, on March 25, 1959. He received his Electrical Engineering diploma and Ph.D. degree, both with honors, from the Democritus University of Thrace, Xanthi, Greece, in 1984 and 1988, respectively. Since January 1990, he has been continuously with the Department of Electrical and Computer Engineering, Democritus University of Thrace, where he is currently Professor and Director of the Microwaves Laboratory. From 2005 to 2010 he has been Director of the Graduate Studies of the department. He has authored over 250 journal and conference papers and supervised 7 Ph.D. and 11 M.Sc. theses and more than 90 Diploma theses. His main research interests include microwave engineering, open waveguides and antennas in anisotropic media, software-defined and cognitive radio, computational electromagnetics, and biomedical engineering. Dr. Kyriacou is member of IEEE since 1990 and senior member since 2000. He is also a member of the Technical Chamber of Greece and the European Microwave Association (EuMA). Constantine A. Balanis received the BSEE degree from Virginia Tech, Blacksburg, VA, in 1964, the MEE degree from the University of Virginia, Charlottesville, VA, in 1966, and the Ph.D. degree in Electrical Engineering from Ohio State University, Columbus, OH, in l969. From 1964-1970 he was with NASA Langley Research Center, Hampton VA, and from 1970-1983 he was with the Department of Electrical Engineering, West Virginia University, Morgantown, WV. Since 1983 he has been with the Department of Electrical Engineering, Arizona State University, Tempe, AZ, where he is now Regents' Professor. His research interests are in computational electromagnetics, smart antennas, and multipath propagation. He received an Honorary Doctorate from the University of Thessaloniki, Greece, in 2004, the 2000 IEEE Millennium Award, the 1996 Graduate Mentor Award, Arizona State University, the 1992 Special Professionalism Award from the IEEE Phoenix Section, the 1989 IEEE Region 6 Individual Achievement Award, and the 1987-1988 Graduate Teaching Excellence Award, School of Engineering, Arizona State University.

List of Figures
List of Tables
Preface
Acknowledgments
Ferrites and Ferroelectrics
Tunable Materials–Characteristics and Constitutive Parameters
Finite Ferrite Samples
Multiferroics: Ferrite–Ferroelectric Composites
Planar Transmission Lines
Authors' Biographies