Prof. Constantinos L. Zekios currently serves as an Assistant Professor at the Department of Electrical and Computer Engineering, Florida International University, Miami, Florida, USA. He received a Diploma degree (5-year degree) in electrical and computer engineering, an M.S. degree in electrical and computer engineering communication and satellite telecommunication systems, and a Ph.D. degree in electrical and computer engineering from the Democritus University of Thrace, Xanthi, Greece, in 2008, 2011, and 2015, respectively. He served as a Post-Doctoral Researcher at the Electrical and Computer Engineering Department, University of Massachusetts at Amherst, MA, USA from January 2016 to May 2018, and at the Electrical and Computer Engineering Department, Florida International University, Miami, FL, USA, from May 2018 to August 2020. He was a Research Assistant Professor at the Department of Electrical and Computer Engineering, Florida International University, from September 2020 to July 2022. His main research interests include theoretical and computational electromagnetics, optimization methods, antennas and antenna arrays, electromagnetic surfaces, beamforming networks, microwave engineering, and photonics. He is a Senior Member of IEEE.