Abstract
Numerical modeling is used to study the distribution of the electric field excited by microwave radiation in a rectangular chamber in which a two-layer dielectric cylindrical phantom is placed whose electrophysical parameters correspond to muscle and fat tissues of human extremities. The electric field in the fat layer is shown to be noticeably higher than in the muscle layer and is inhomogeneous in both layers. Measurements have demonstrated that due to heat transfer, the resulting temperature inhomogeneity in the phantom volume is noticeably weaker than the electric field inhomogeneity. Thus, despite the significant skin effect and the presence of weak standing waves, a fairly uniform heating of the phantom is possible.
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