ผู้เขียน: Apostolos Georgiadis

RONALD J. POGORZELSKI, Ph D, is Senior Research Scientist Emeritus and the former supervisor of the Spacecraft Antenna Research Group at the Jet Propulsion Laboratory. He has authored or coauthored over 100 technical publications and presentations and was editor of the IEEE Transactions on Antennas and Propagation. APOSTOLOS GEORGIADIS, Ph D, is a Senior Research Associate at Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) in Barcelona, Spain, where he is involved in active antennas and antenna arrays as well as RFID technology and energy harvesting.