Xi Lin Chen, Aghuinyue Umenei, David Baarman, Nicolas Chavannes, Valerio De Santis, Juan Mosig, and Niels Kuster, IEEE Transactions on Electromagnetic Compatibility, Volume 56, Issue 5, pp. 1027-1034, online March 12, 2014
In this study, we investigated human exposure to close-range wireless power transfer (WPT) systems with coil diameters of up to 150 mm operating in the frequency range 0.1 – 10 MHz. We propose the use of approximation formulae for making conservative estimates of human exposure with respect to the most stringent exposure guidelines. The approximation has been verified for two pre-commercial prototype WPT systems, the first of which, a 5 W system operating at 100 kHz, was evaluated as part of this study. The second system to be verified, which operates at 6.78 MHz with a nominal current of 5.4 Arms was reported in a separate study.
The scientific and technical impact of this study can be summarized as: