Rapid Heating of Liquid Foodstuffs at 896 MHz^*

* Manuscript received December 17. 1975: in revised form April 20, 1976.

ABSTRACT

The design parameters of a TM₀₁₀ resonant cavity, operating at 896 MHz for the heat treatment of thin cylindrical samples of known dielectric properties, are presented. Comparison is made of the performance of such a cavity with various liquid foodstuffs. The influence of the dielectric liquid temperature on the matching characteristics is experimentally investigated. High utilization efficiencies and heating rates are obtained. The distribution of the axial electric field in the loaded cavity is computed. The electric field pattern pertaining to the TM₀₁₀ mode is experimentally verified using an electric probe.

Notes

* Manuscript received December 17. 1975: in revised form April 20, 1976.