Simulation Advice - Katerina Galitskaya
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Katerina is a Senior Antenna Engineer at Radientum, an antenna design and consulting company in Tampere, Finland. She began her career in mm-wave antenna array design in 2014. As a Senior Engineer, she designs antennas for IoT, cellular, and mm-wave applications. Since 2022 the focus of her work is on sub-6GHz base station antenna design.  Katerina is 2022 Simulia Champion, technical blog writer and EM-simulation expert who posts examples here about various simulations so others can learn about various techniques.

How Accurate Should a Human Head Model Be For RF Absorption Simulations?

January 23, 2023

An important aspect to consider when modeling RF absorption by the human head is the frequency of the signal. At lower frequencies, RF energy tends to penetrate deeper into the skin, while at higher frequencies (such as millimeter-wave), the energy is absorbed more superficially and cannot penetrate more than several millimeters into the skin. The human head contains a variety of tissues with different dielectrically properties. These tissues, including the skin, bone, and brain, all absorb RF energy to varying degrees, and their relative contribution to the overall absorption depends on the frequency of the RF signal. It's important to note, that more complex model will inevitably lead to longer simulation time and memory consumption, so a trade-off between accuracy and speed is often required.

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