Journal
JOURNAL OF APPLIED PHYSICS
Volume 119, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4948948
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Funding
- National Natural Science Foundation of China [51277120]
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Shifting medium is a kind of an anisotropic but homogeneous metamaterial designed by transformation optics. An object or free space enclosed by the shifting medium could be moved to a certain distance away from the original position. In this paper, we propose a cone-shaped shifting medium shell to move an internal coil to the given position. In this way, the two coils in a wireless power transfer system could be equivalently moved closer; thus, their magnetic coupling is enhanced. The theoretical models and numerical simulations are presented and analyzed to validate the effects of the shifting medium shell. Both ohmic loss and magnetic loss are also considered for practical concerns. Finally, we discuss the simplification of such a shifting medium to facilitate its fabrication. Published by AIP Publishing.
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