This is the most modern, comprehensive and system-oriented text on radio engineering in print, by a pioneer in the field. Engineers and students need to use this book, which covers the physics of radio systems from a quantum mechanical point of view and offers a unique insight into radio engineering by showing not only how but why radio systems work.Professor Gosling has spent a lifetime in industry and education, including time as Technical Director of Plessey, President of EUREL (European Convention of Engineering Societies), Past President of the Institution of Electrical Engineers, and Chair of Electronic Engineering at the University of Bath. He is currently Visiting Professor at the University of Bath. He has published eleven books and over fifty scientific papers.