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Wireless Power Transfer via Strongly Coupled Magnetic Resonances
André Kurs, Aristeidis Karalis, Robert Moffatt, J. D. Joannopoulos, Peter Fisher and Marin Soljačić
New Series, Vol. 317, No. 5834 (Jul. 6, 2007), pp. 83-86
Published by: American Association for the Advancement of Science
Stable URL: http://www.jstor.org/stable/20036648
Page Count: 4
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Using self-resonant coils in a strongly coupled regime, we experimentally demonstrated efficient nonradiative power transfer over distances up to 8 times the radius of the coils. We were able to transfer 60 watts with ∼40% efficiency over distances in excess of 2 meters. We present a quantitative model describing the power transfer, which matches the experimental results to within 5%. We discuss the practical applicability of this system and suggest directions for further study.
Science © 2007 American Association for the Advancement of Science