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Description
The rapid deployment of 5G and the development of 6G networks have increased interest in millimeter-wave (mmWave) technologies. At mmWaves, the reference levels are defined in terms of the absorbed power density (Sab), the primary dosimetric quantity in this band. Sab depends on various factors, including physiological parameters, age, environmental conditions, and inter-individual variability. Skin characteristics, such as thickness and hydration, vary across different body sites, influencing mmWave absorption and reflection. Additionally, temperature changes alter the electromagnetic properties of skin, which in turn affect Sab.
This study aims to investigate the impact of temperature variations on Sab across different body sites, namely the palm, head, and ear, when exposed to 26 GHz and 60 GHz mmWave frequencies. Using a numerical approach and the mixture equation to determine the dielectric properties of the viable epidermis and dermis, the study evaluates how temperature changes within the 10°C to 40°C range influence Sab. The findings underscore the importance of considering temperature-dependent dielectric properties in dosimetric models for accurate exposure assessments.
