Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	A Microwave Applicator for Drying Food Samples [PDF]
AUTHORS	P.O. Risman 1978 13 4 297-302
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Abstract A compact system using a cylindrical microwave applicator for drying disc-shaped food samples is presented. The 2450 MHz applicator is designed to operate near resonance when drying begins, creating a ring-shaped heating distribution. As the sample dries out, the resonance diminishes and a field excitation takes over, drying the central parts of the sample. The initial power transfer exceeds 60%, but decreases to about 10% when the sample is dried. For most meat products, an input power of 200 W is sufficient to dry a 10-g sample in 6 to 8 min.