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FEED UNIT AND FEED SYSTEM

  • US 20140300196A1
  • Filed: 03/06/2014
  • Published: 10/09/2014
  • Est. Priority Date: 04/08/2013
  • Status: Active Grant
First Claim
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1. A feed unit comprising:

  • a power transmission coil configured to perform power transmission using a magnetic field;

    a coupling coefficient calculation section configured to calculate a coupling coefficient between the power transmission coil and a power reception coil in a unit to be fed with power, whereinthe coupling coefficient calculation section measures frequency characteristics of input impedance in a non-operating state of a rectification circuit in the unit to be fed with power, and uses a measurement result of the frequency characteristics to calculate the coupling coefficient.

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