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Wireless power transmission system with enhanced magnetic field strength

  • US 9,418,785 B2
  • Filed: 09/14/2012
  • Issued: 08/16/2016
  • Est. Priority Date: 11/29/2011
  • Status: Active Grant
First Claim
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1. A wireless power transmitter comprising:

  • a generator configured to generate a power;

    a resonator configured to generate a magnetic field to transmit the power to a target device; and

    a slab unit configured to enhance the magnetic fieldwherein the slab unit comprisesa metamaterial comprising an electric dipole structure and a magnetic dipole structure,wherein a relative permittivity at the metamaterial is determined based on the electric dipole structure and a relative permeability of the metamaterial is determined based on the magnetic dipole structure,wherein the magnetic dipole structure comprises a loop-shaped conductor configured to generate a capacitance associated with a resonance characteristic and wherein the capacitance is determined to have a zeroth order resonance for the resonator at a target frequency of transmitting the power.

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