**About the Editor**

**Hristos T. Anastassiu**, M.Sc.(1), M.Sc.(2), Ph.D., was born in Edessa, Greece, on July 11, 1966. He obtained the Diploma Degree in Electrical Engineering from the Aristotle University of Thessaloniki, Greece, in 1989. He was awarded the National Fellowship for academic excellence in every year of his studies. From 1989 to 1992 he was a Graduate Research Assistant at the ElectroScience Laboratory, the Ohio State University, U.S.A., where he obtained the M.Sc. degree in Electrical Engineering. From 1992 to 1997 he was a Graduate Research Assistant at the Radiation Laboratory, University of Michigan, U.S.A., where he obtained the Ph.D. degree in Electrical Engineering. In December 1995 he obtained the M.Sc. degree in Mathematics from the same university. He received the second place award in the student paper contest of the 1993 IEEE-AP (Antennas and Propagation) International Symposium held in Ann Arbor, MI. He served in the Hellenic Army (Artillery) from 1997 to 1998. Between 1999 and 2004 he was a Research Scientist at the Institute of Communication and Computer Systems (ICCS) of the National Technical University of Athens (NTUA). From June 2004 to March 2011 he was affiliated with the Hellenic Aerospace Industry (HAI), Tanagra, Greece. In September 2005 he was elected Adjunct Assistant Professor at the Hellenic Air Force Academy, Dekelia, Greece, where he taught courses in Electromagnetics and Communications until 2010. In March 2011 he was elected Associate Professor at the Department of Informatics and Communications of the Technological and Educational Institute (now International Hellenic University) of Serres, Greece, where he was promoted to Professor in June 2015. He is a Senior Member of IEEE, an Associate Member of ΣΞ (Sigma Xi), and a Member of the Technical Chamber of Greece. He has been chairman of the SET-085/RTG 49 and SET-138 RTG 75 RFT NATO/RTO research groups. He has participated in several research projects, and as of November 2020, he has been author or co-author of more than 140 scientific publications in international journals and conferences, which have gathered more than 780 citations.
