Journal
CURRENT APPLIED PHYSICS
Volume 11, Issue 5, Pages 1188-1191Publisher
ELSEVIER
DOI: 10.1016/j.cap.2011.02.017
Keywords
Wireless power transfer; Resonant coupling; Electromagnetic devices
Funding
- ISF [1248/10]
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Planar spirals offer a highly scalable geometry appropriate for wireless power transfer via strongly coupled inductive resonators. We numerically derive a set of geometric scale and material independent coupling terms, and analyze a simple model to identify design considerations for a variety of different materials. We use our model to fabricate integrated planar resonators of handheld sizes, and optimize them to achieve high-Q factors, comparable to much larger systems, and strong coupling over significant distances with approximately constant efficiency. (C) 2011 Elsevier B.V. All rights reserved.
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