Effects of the Human Body on Wearable Wireless Power Transfer Systems

Authors

  • Gianfranco Perez-Greco Department of Electrical and Computer Engineering Florida International University Miami, FL, USA
  • Juan Barreto Department of Electrical and Computer Engineering Florida International University Miami, FL, USA
  • Abdul-Sattar Kaddour Department of Electrical and Computer Engineering Florida International University Miami, FL, USA
  • Stavros V. Georgakopoulos Department of Electrical and Computer Engineering Florida International University Miami, FL, USA

Keywords:

Human body, wearable, wireless power tranfer, SCMR

Abstract

In this paper, the effects of different parts of the human 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 is used in this study. The results show that when the WPT system is placed directly on the human body its Power Transfer Efficiency (PTE) is reduced by 13% on average in both simulations and measurements. These losses are attributed to the material properties of the human body. Also, different parts of the human body cause different drops in PTE due to their different shapes and geometries.

References

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K. Bao, C. L. Zekios, and S. V. Georgakopoulos, “A Wearable WPT System on Flexible Substrates,” in IEEE Antennas and Wireless Propagation Letters, vol. 18, no. 5, pp. 931-935, May 2019.

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Published

2020-11-07

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Section

Articles