Some possibilities of heating by centimetric power

A study of the basic principles, range of applications, and methods of utilization of dielectric loss heating by electro-magnetic energy at radio-frequencies above 500 Mc/s. New problems arise because linear dimensions of the system and load are now large compared with the operating wavelength. In particular, the mode of formation of stationary wave patterns in the load, methods of preventing consequent non-uniform heating, and methods of avoiding or automatically correcting mismatch due to reflected waves reaching the generator are dealt with in detail. Methods of localizing the dissipation of high frequency power in the load are analysed and three basic systems¿resonator, beam and transmission line¿are distinguished, and are illustrated by application to the performance of suitable heating operations.