Dr. Leonidas Marantis (male) received the BEng degree in Electronic and Electrical Engineering from the Queen Mary (University of London) in 2004 and the MSc. degree in Communications and Signal Processing from the Imperial College (University of London) in 2005. In October of 2005, he joined the Microwave and Radar Group of University College London (UCL) and he started his research activity on conformal antenna arrays. From 2005 to 2011, he worked as a laboratory technician of the spherical near-field antenna measurement facility of UCL. During 2006 – 2011, he also worked as an antenna engineering consultant in various projects, where he was involved in microstrip antenna design, fabrication and measurements. In 2014, he received the Ph.D. degree from UCL with specialization on “Spherical Antenna Arrays for LEO Satellite Communications”. In 2015, he spent six months serving as a research assistant in the Signals Officers Telecommunications and Electronics School of the Hellenic Army. Since September of 2015, he is a post-doctoral research assistant in the Telecommunications Systems Laboratory of the University of Piraeus, focusing his research on parasitic antenna arrays and wireless MIMO systems. His research interests also include reconfigurable microstrip antennas, array processing with direction finding techniques, satellite communications and antenna measurements.