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 Ch.