Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12095
Title: A comparative study between novel witricity and traditional inductive magnetic coupling in wireless charging
Authors: Ho, SL 
Wang, J
Fu, WN 
Sun, M
Keywords: Inductive magnetic coupling
Resonant wireless energy transfer
Strong coupling
Witricity
Issue Date: 2011
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on magnetics, 2011, v. 47, no. 5, 5754800, p. 1522-1525 How to cite?
Journal: IEEE transactions on magnetics 
Abstract: A non-radiative energy transformer, commonly referred as Witricity and based on strong coupling between two coils which are separated physically by medium-range distances, is proposed to realize efficient wireless energy transfer. The distance between the resonators can be larger than the characteristic sizes of each resonator. Non-radiative energy transfer between the first resonator and the second resonator is facilitated through the coupling of their resonant-field evanescent tails. The proposed system operates as traditional inductive magnetic coupling devices when the operating frequencies are not the resonant frequency. Corresponding finite element analysis (FEA) and experiments have been carried out to facilitate quantitative comparison. Compared with typical magnetic inductive coupling energy transmission devices, the efficiency of the proposed system is much higher. This investigation indicates that it is feasible to use wireless energy transfer technology to recharge batteries, particularly in implant devices.
URI: http://hdl.handle.net/10397/12095
ISSN: 0018-9464
EISSN: 1941-0069
DOI: 10.1109/TMAG.2010.2091495
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