Strong Coupling Optimization With Planar Spiral Resonators

Details Strong Coupling Optimization With Planar Spiral Resonators Strong Coupling Optimization With Planar Spiral Resonators

2011-11-22

arxiv.org/abs/1111.5271v1

Current Applied Physics, Volume 11, Issue 5, September 2011, Pages 1188-1191

Physics

Optics

ISSN 1567-1739

Scientific paper

10.1016/j.cap.2011.02.017

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.

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