TR2011-048

Experiments on Wireless Power Transfer with Metamaterials


    •  Wang, B.; Teo, K.H.; Nichino, T.; Yerazunis, W.; Barnwell, J.; Zhang, J., "Experiments on Wireless Power Transfer with Metamaterials", Applied Physics Letters, DOI: 10.1063/1.3601927, Vol. 98, No. 25, pp. 254101-254101-3, June 2011.
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      • @article{Wang2011jun,
      • author = {Wang, B. and Teo, K.H. and Nichino, T. and Yerazunis, W. and Barnwell, J. and Zhang, J.},
      • title = {Experiments on Wireless Power Transfer with Metamaterials},
      • journal = {Applied Physics Letters},
      • year = 2011,
      • volume = 98,
      • number = 25,
      • pages = {254101--254101--3},
      • month = jun,
      • doi = {10.1063/1.3601927},
      • url = {http://www.merl.com/publications/TR2011-048}
      • }
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  • Research Areas:

    Signal Processing, Electric Systems


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In this letter, we propose the use of metamaterials to enhance the evanescent wave coupling and improve the transfer efficiency of a wireless power transfer system based on coupled resonators. A magnetic metamaterial is designed and built for a wireless power transfer system. We show with measurement results that the power transfer efficiency of the system can be improved significantly by the metamaterial. We also show that the fabricated system can be used to transfer power wirelessly to a 40 W light bulb.