Numerical Analysis of Electromagnetic Field Exposure from 5G Mobile Communications at 28 GHZ in Adults and Children Users for Real-World Exposure Scenarios

Maria Sole Morelli, Silvia Gallucci, Beatrice Siervo and Valentina Hartwig
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Maria Sole Morelli: U.O.C. Infotel, Fondazione Toscana Gabriele Monasterio, 56100 Pisa, Italy
Silvia Gallucci: DIITET Department, Institute of Electronics and Information and Telecommunications Engineering IEIIT-CNR, 20133 Milan, Italy
Beatrice Siervo: Department of Information Engineering, University of Pisa, 56100 Pisa, Italy
Valentina Hartwig: DSB Department, Institute of Clinical Physiology IFC-CNR, 56100 Pisa, Italy

IJERPH, 2021, vol. 18, issue 3, 1-13

Abstract: The recent development of millimeter-wave (mmW) technologies, such as the fifth-generation (5G) network, comes with concerns related to user exposure. A quite large number of dosimetry studies above 6 GHz have been conducted, with the main purpose being to establish the correlation between different dosimetric parameters and the skin surface temperature elevation. However, the dosimetric studies from 28 GHz user equipment using different voxel models have not been comprehensively discussed yet. In this study, we used the finite-difference time-domain (FDTD) method for the estimation of the absorption of radiofrequency (RF) energy from a microstrip patch antenna array (28 GHz) in different human models. Specifically, we analyzed different exposure conditions simulating three real common scenarios (a phone call scenario, message writing scenario, and browsing scenario) regarding the use of smartphones/tablets by four different individuals (adult male and female, child male and female). From the results of Absorbed Power Density (Sab), it is possible to conclude that all the considered exposure scenarios comply with the safety limits, both for adult and children models. However, the high values of the local Specific Absorption Rate (SAR) in the superficial tissues and the slight differences in its distribution between adults and children suggest the need for further and more detailed analysis.

Keywords: 5G; mmW; numerical dosimetry; smartphone exposure (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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