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Controlling Microwave-Induced Temperature Distribution in a Wooden Load Through a Two-Source Excitation
Obtaining even temperature distribution in the volumetric materials with dielectric losses exposed to the microwave radiation was addressed in this work. Two types of radiators, (1) with a rectangular aperture and (2) with a teardrop aperture, were used for heating a multi-layer wooden bar. The temperature disfribution in the bar was measured in the direction of radiation. With a rectangular aperture, the maximum temperature reached inside the bar was at some distance from the surface of the bar facing the radiator. With a teardrop aperture, the maximum temperature was at the surface of the bar facing the radiator. It's expected that an even temperature distribution in a treated object can be obtained by simultaneous using both types of radiators