Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	The Dynamic Impedance of Radio Frequency Heating Generators [PDF]
AUTHORS	A.C. Metaxas 1987 22 3 127-137
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Abstract The importance of the dynamic impedance in the design of radio frequency heating generators is highlighted. Established procedures are used to obtain graphically the working parameters of a number of triodes used in industrial processing operating under Class C conditions. It is shown that the dynamic impedance reduces from the range 24-9 at no load condition to about 1-2 at near full load conditions. The effect of the material loss factor on the dynamic impedance and hence on matching in the case of inductively coupled applicators is quantitatively described using a simple model. Key Words: Radio frequency heating, impedance matching, dynamic impedance, resonant applicator, Class C mode of operation, dielectric loss factor.