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.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1188-1191 |
| Number of pages | 4 |
| Journal | Current Applied Physics |
| Volume | 11 |
| Issue number | 5 |
| DOIs | |
| State | Published - Sep 2011 |
Bibliographical note
Funding Information:We acknowledge the support of ISF grant no. 1248/10.
Keywords
- Electromagnetic devices
- Resonant coupling
- Wireless power transfer