Thermal model of skin-equivalent phantoms at 60 GHz

This paper reports the first analytical thermal model of a finite millimeter-wave phantom emulating the electromagnetic properties of human skin at 60 GHz. This model is obtained by solving the one-dimensional (1D) heat transfer equation (HTE). The analytical results calculated for several phantom thicknesses (5mm, 10mm, and 15mm) have been compared to the 1D analytical solution of the bio-heat transfer equation (BHTE) for a semi-infinite phantom model as well as to electromagnetic-thermal co-simulation results obtain using CST Microwave Studio. An excellent agreement is observed between the analytical and numerical results (deviations around 1%), and, as expected, a convergence toward the BHTE result is observed when increasing the phantom thickness.