Effects of the Human Body on Wearable Wireless Power Transfer Systems

摘要

In this paper, the effects of different parts of thehuman body on a wearable Wireless Power Transfer (WPT)system are examined. A Strongly Coupled Magnetic Resonators(SCMR) WPT system operating in the ISM band 40.68 MHz isused in this study. The results show that when the WPT system isplaced directly on the human body its Power Transfer Efficiency(PTE) is reduced by 13% on average in both simulations andmeasurements. These losses are attributed to the materialproperties of the human body. Also, different parts of the humanbody cause different drops in PTE due to their different shapesand geometries.