Principles of RF heating
While a comprehensive explanation of physical theory of RF
heating is available in Jones and Rowley (1997) this section will
briefly overview how materials are heated in RF fields while also
providing the basic equations which govern this heating. The RF
portion of the electromagnetic spectrum occupies a region between 1 and 300 MHz as shown in Fig. 1 although the main frequencies used for industrial heating lie in the range 10–50 MHz