Strong Coupling Optimization With Planar Spiral Resonators
arXiv:1111.5271 · doi:10.1016/j.cap.2011.02.017
Abstract
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.
ISSN 1567-1739