P J B ClarricoatsProfessor Peter Clarricoats is the Head of the Department of Electrical and Electronic Engineering at Queen Mary College in the University of London. He is a past Chairman of the Electronics Division of the IEE and has also chaired the European Microave Conference and the IEE International Conference on Antennas and Propagation. He has been an Editor of Electronics Letters since its foundation in 1965 and is one of the Editors of the Electromagnetic Wave Series in which this volume appears. Read More Read Less