Ultra-Wideband Temperature Dependent Dielectric Spectroscopy of Porcine Muscle in the Microwave Frequency Range

The knowledge of dielectric properties of tissue is a crucial factor to develop new systems for medical applications. In the field of thermotherapy (e.g. hyperthermia) the frequency and temperature dependency of these properties are of high importance. To this end, we investigate the dielectric properties of porcine muscle in the temperature range between 30 °C and 50 °C from 0.5 GHz to 7 GHz. Based on these data we determine temperature coefficients of the relative permittivity and effective conductivity. In both cases, the results show a weak temperature dependency and a change of sign of the temperature coefficients in the specified frequency range.