Evolution of radio systems into the 21st century

Progress in the development and application of radio communications over the past century, from initial discoveries to mass markets has been both rapid and profound. As we approach the second century of radio this paper explores the possible evolution of radio systems in the coming years. In considering future evolution of radio systems we should recognise the enormous potential of radio systems to develop and proliferate as have computers, in a variety of forms, large powerful systems, small portable systems and embedded technology in a multitude of different products in diverse markets. Such proliferation will have far reaching consequences. In considering evolution paths we must identify and evaluate potential new applications and markets, and consider the wider environment in which the technology will be applied. This paper has sought to begin to do this, albeit to a very limited degree, giving examples of such applications and markets and some of the relevant issues that will drive them