miquelangeles
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- Mar 18, 2021
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• This study provides, for the first time, a detailed quantitative analysis of the electromagnetic power absorption and temperature elevation in presence of a textile at 26 GHz and 60 GHz, frequencies upcoming for 5th generation (5G) and next generations of wireless communications systems.• We demonstrate that a textile in contact or in proximity of skin impacts the power deposition and the consequent temperature elevation; in particular, cotton and wool in contact with skin increase the absorbed power density up to 41.5% at 26 GHz and 34.4% at 60 GHz.
• The interest of this study is to evaluate the exposure in the upcoming 5G bands in the scenarii involving interaction of electromagnetic fields in presence of a textile layer (e.g. usage of a tablet lying on the user’s legs or of radiating devices during wintertime, when wearing hats or gloves).
• We analysed and quantified, for the first time, the power absorption and temperature elevation at 26 GHz and 60 GHz in presence of some of the most common textiles used for clothes (i.e. cotton and wool).
• We demonstrate that with the textile in direct contact with skin the temperature rise increases compared to the bare skin by up to 52% at 26 GHz and 46% at 60 GHz and that, with an air gap and for typical textile thicknesses, the variation ranges from −3.5% to 20.6% and from −11.1% to 20.9% at 26 GHz and 60 GHz, respectively