Polarization and frequency effects on whole animal absorption of RF energy

A parallel-plate waveguide is used to determine wide-band RF (285 to 4000 MHz) absorption characteristics of 96- to 390-g rats and biological-phantom prolate spheroidal bodies. The results compare well to those of free space irradiation. At resonance, for E along the long dimension (a) power deposition of 9 times higher then that for H||a orientation is observed.