Simultaneous mid-range power transfer to multiple devices
Author(s)
Kurs, Andre B.; Moffatt, Robert M.; Soljacic, Marin
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Electromagnetic resonators strongly coupled through their near-fields [ A. Karalis, J. D. Joannopoulos, and M. Soljačić, Ann. Phys. 323, 34 (2008) ; A. Kurs, A. Karalis, R. Moffatt, J. D. Joannopoulos, P. Fisher, and M. Soljačić, Science 317, 83 (2007) ] are able to achieve efficient wireless power transfer from a source to a device separated by distances multiple times larger than the characteristic sizes of the resonators. This midrange approach is therefore suitable for remotely powering several devices from a single source. We explore the effect of adding multiple devices on the tuning and overall efficiency of the power transfer, and demonstrate this scheme experimentally for the case of coupling objects of different sizes: a large source (1 m[superscript 2] in area) powering two smaller devices (each ≃ 0.07 m[superscript 2] in area).
Date issued
2010-01Department
Massachusetts Institute of Technology. Department of PhysicsJournal
Applied Physics Letters
Publisher
American Institute of Physics (AIP)
Citation
Kurs, André, Robert Moffatt, and Marin Soljačić. “Simultaneous Mid-range Power Transfer to Multiple Devices.” Applied Physics Letters 96.4 (2010): 044102. © 2010 American Institute of Physics
Version: Final published version
ISSN
0003-6951
1077-3118