Reflection Properties of the Human Skin From 40 to 110 GHz: A Confirmation Study
Abstract
Overview
This study aimed to validate generic layered skin models used in recent theoretical dosimetric studies, which are pertinent to establishing safety protocols against electromagnetic fields (EMF). The study was concentrated on frequencies from 40 to 110 GHz, essential for evaluating the over-the-air performance of wireless devices.
Methodology and Findings
- Reflection coefficients S11 were measured across 21 body locations in 37 human volunteers, with different Stratum Corneum Layer (SCL) thicknesses.
- Statistical analysis confirmed a dependency of S11 on the SCL thickness but showed no variance with gender.
- Findings support the application of layered phantoms to simulate the electromagnetic reflection/absorption characteristics of human skin efficiently. The phantom materials mimic the SCL's impedance matching effects with less than 0.85 dB deviation.
Conclusion
The study confirms the accuracy of using layered phantoms for representing the electromagnetic exposure impact on human skin, which is crucial for understanding and potentially mitigating health risks associated with EMF exposure.