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RF Compliance Study of Temperature Elevation in Human Head Model Around 28 GHz for 5G User Equipment Application: Simulation Analysis
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering.
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2018 (English)In: IEEE Access, E-ISSN 2169-3536, Vol. 6Article in journal (Refereed) Published
Abstract [en]

The crowdedness of current cellular bands and the demand for higher transmission speed prompt the use of the millimeter-wave spectrum for the next-generation mobile communication. In the millimeter-wave frequencies, the dosimetric quantity for human exposure to electromagnetic fields changes from the specific absorption rate to incident power density. In this paper, we used 28-GHz beam-steering patch arrays, a dipole antenna, and plane waves to investigate the temperature elevation in a multi-layer model of human head and its correlation with power density metrics. The power density averaged over one square-centimeter in free space and the peak temperature elevation in tissue at 28 GHz have good correlation. The peak temperature elevation indicated by the power density averaged one square-centimeter also agrees well with the peak temperature elevation induced by the plane waves. The results show that the averaging area of a few square-centimeters may be a good candidate for the spatial-average power density. The findings provide valuable input to the ongoing revision and updating of relevant safety standards and guidelines.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2018. Vol. 6
Keywords [en]
28 GHz, 5G, antenna array, human head, incident power density, millimeter wave, RF compliance, safety guidelines, safety standards, temperature elevation, user equipment
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-224049DOI: 10.1109/ACCESS.2017.2776145ISI: 000425675300025Scopus ID: 2-s2.0-85035807157OAI: oai:DiVA.org:kth-224049DiVA, id: diva2:1191226
Note

QC 20180316

Available from: 2018-03-16 Created: 2018-03-16 Last updated: 2018-03-16Bibliographically approved

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Xu, BoHe, Sailing

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  • apa
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