Naslov
Assessment of Incident Power Density on Spherical Head Model up to 100 GHz

Autori
Lojic Kapetanovic, Ante ; Poljak, Dragan

Izvornik
IEEE Transactions on Electromagnetic Compatibility (0018-9375) Early access (2022); 1-8

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
compliance assessment ; human head ; incident power density (IPD) ; millimeter waves ; radiation safety

Sažetak
This article presents a technique for the accurate assessment of the spatially averaged incident power density (IPD) on a spherical human head model from 3.5 to 100 GHz. The spatially-averaged IPD is defined either by averaging components of the power density vector normal to an evaluation surface, or by averaging its norm. The electromagnetic exposure assessment is provided for a dipole antenna placed at a separation distance of 2–150 mm from the model. We compare the IPD averaged over a proposed spherical surface with differently positioned planar surfaces. Results show that, for appropriate settings of the ex-posure above 6 GHz, the IPD averaged on a spherical surface is up to 12% larger for the normal definition, while marginally lower for the norm definition. In the worst case scenario, the spatially averaged IPD on a spherical surface is up to about 30% larger regardless of the definition. Comparative analysis between the definitions of the IPD averaged on a spherical model demonstrates that the norm definition yields significantly larger values in the reactive near field at characteristic frequencies, whereby this difference is marginal out of the reactive near field.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

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