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POWER FEEDING DEVICE, WIRELESS POWER FEEDING SYSTEM USING THE SAME AND WIRELESS POWER FEEDING METHOD

  • US 20120062039A1
  • Filed: 08/22/2011
  • Published: 03/15/2012
  • Est. Priority Date: 09/09/2010
  • Status: Active Grant
First Claim
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1. A power feeding device comprising an antenna circuit and a control circuit,wherein the control circuit is configured to control a frequency of a power signal transmitted to a power receiver in accordance with a reflection coefficient, andwherein the reflection coefficient is obtained by calculating a proportion of signals, among power signals output to the antenna circuit, that return from the power receiver to the antenna circuit without feeding the power receiver with power.

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