Wireless power transfer via strongly coupled magnetic resonances

Science

Volumn 317, Issue 5834, 2007, Pages 83-86

  Kurs, André ^a   Karalis, Aristeidis ^b   Moffatt, Robert ^a   Joannopoulos, J D ^a   Fisher, Peter ^a   Soljačić, Marin ^a  

^a MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^b USA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ELECTRICAL POWER; ENERGY EFFICIENCY; EXPERIMENTAL STUDY; MAGNETIC PROPERTY; MODEL VALIDATION; QUANTITATIVE ANALYSIS; RESONANCE;

ARTICLE; CALCULATION; DENSITY; DEVICE; ELECTROMAGNETIC FIELD; MAGNETIC FIELD; MATHEMATICAL ANALYSIS; NUCLEAR MAGNETIC RESONANCE; OSCILLATION; OSCILLATOR; POWER SUPPLY; PRIORITY JOURNAL; QUANTITATIVE ANALYSIS; WIRELESS POWER TRANSFER;

EID: 34447309715     PISSN: 00368075     EISSN: 10959203     Source Type: Journal    
DOI: 10.1126/science.1143254     Document Type: Article

References (20)

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7. Here, by midrange, we mean that the sizes of the devices that participate in the power transfer are smaller than the distance between devices by a factor of at least 2 to 3. For example, if the device being powered is a laptop (size ∼50 cm) and the power source (size ∼50 cm) is in the same room as the laptop, the distance of power transfer could be within a room or a factory pavilion (size on the order of a few meters).
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12. The couplings to the driving circuit and the load do not have to be inductive. They may also be connected by a wire, for example. We have chosen inductive coupling in the present work because of its easier implementation.
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14. We experimented with various power ratings from 5 to 75 W.
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20. We thank J. Pendry for suggesting the use of magnetic resonances and M. Grossman and I. Čelanović for technical assistance. Supported by NSF Materials Research Science and Engineering Center grant DMR 02-13282, U.S. Department of Energy grant DE-FG02-99ER45778, and the Army Research Office through the Institute for Soldier Nanotechnologies under contract DAAD-19-02-D0002.