Human exposure to radiofrequency energy above 6 GHz

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Journal Title
Journal ISSN
Volume Title
A2 Katsausartikkeli tieteellisessä aikakauslehdessä
Date
2021-04-14
Major/Subject
Mcode
Degree programme
Language
en
Pages
20
Series
Physics in Medicine and Biology, Volume 66, issue 8
Abstract
International guidelines/standards for human protection from electromagnetic fields have been revised recently, especially for frequencies above 6 GHz where new wireless communication systems have been deployed. Above this frequency a new physical quantity 'absorbed/epithelial power density' has been adopted as a dose metric. Then, the permissible level of external field strength/power density is derived for practical assessment. In addition, a new physical quantity, fluence or absorbed energy density, is introduced for protection from brief pulses (especially for shorter than 10 s). These limits were explicitly designed to avoid excessive increases in tissue temperature, based on electromagnetic and thermal modeling studies but supported by experimental data where available. This paper reviews the studies on the computational modeling/dosimetry which are related to the revision of the guidelines/standards. The comparisons with experimental data as well as an analytic solution are also been presented. Future research needs and additional comments on the revision will also be mentioned.
Description
Publisher Copyright: © 2021 Institute of Physics and Engineering in Medicine. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
Keywords
international standard, radiofrequency safety, thermal effect
Other note
Citation
Hirata , A , Kodera , S , Sasaki , K , Gomez-Tames , J , Laakso , I , Wood , A , Watanabe , S & Foster , K R 2021 , ' Human exposure to radiofrequency energy above 6 GHz : Review of computational dosimetry studies ' , Physics in Medicine and Biology , vol. 66 , no. 8 , 08TR01 . https://doi.org/10.1088/1361-6560/abf1b7