ID Number		2748
Study Type		Engineering & Physics
Model		In this study, 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.
Details		AUTHORS' ABSTRACT: He et al. 2017 (IEEE #6888): 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 study, 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 squarecentimeter 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.
Findings		Effects (questionable health significance)
Status		Completed With Publication
Principal Investigator		Zhejiang University, Hangzhou, China.
Funding Agency		?????
Country		CHINA
References		He, W et al. IEEE Access., (2017) :- Xu, B et al. IEEE Access., (2019) 7:20996-21005
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