Strong coupling optimization with planar spiral resonators

Avraham Klein; Nadav Katz

doi:10.1016/j.cap.2011.02.017

Strong coupling optimization with planar spiral resonators

Avraham Klein
, Nadav Katz^*

^*Corresponding author for this work

Racah Institute of Physics

Research output: Contribution to journal › Article › peer-review

10 Scopus citations

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
Pages (from-to)	1188-1191
Number of pages	4
Journal	Current Applied Physics
Volume	11
Issue number	5
DOIs	https://doi.org/10.1016/j.cap.2011.02.017
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

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10.1016/j.cap.2011.02.017

Cite this

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title = "Strong coupling optimization with planar spiral resonators",

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.",

keywords = "Electromagnetic devices, Resonant coupling, Wireless power transfer",

author = "Avraham Klein and Nadav Katz",

note = "Funding Information: We acknowledge the support of ISF grant no. 1248/10.",

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AB - 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.

KW - Electromagnetic devices

KW - Resonant coupling

KW - Wireless power transfer

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Strong coupling optimization with planar spiral resonators

Abstract

Bibliographical note

Keywords

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