Method and apparatus for wireless power transmission

  • US 20080067874A1
  • Filed: 09/14/2007
  • Published: 03/20/2008
  • Est. Priority Date: 09/14/2006
  • Status: Active Grant
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First Claim
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1. An RF coil configuration for producing a magnetic field, comprising:

  • a planar spiral inductor, wherein the width of the planar spiral inductor'"'"'s trace becomes wider as the trace spirals toward the center of the planar spiral inductor, wherein the widening of the trace as the trace spirals toward the center of the planar spiral inductor provides a more even magnetic field distribution.

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