Wireless power transfer using separately tunable resonators

  • US 8,933,589 B2
  • Filed: 02/07/2012
  • Issued: 01/13/2015
  • Est. Priority Date: 02/07/2012
  • Status: Active Grant
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First Claim
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1. A system for wireless energy transfer, the system comprises:

  • a circuit for wireless transmission of energy, configured to be fed by an RF source the circuit for wireless transmission comprising;

    a first resonator circuit;

    a circuit for wireless reception of energy, from the first resonator circuit, the circuit for wireless reception comprising;

    a second resonator circuit; and

    a circuit disposed between the circuit for wireless transmission of energy and the circuit for wireless reception of energy to inductively couple with the first and second resonator circuits to effectively produce a rectified voltage having a DC component at the circuit for wireless reception of energy;

    wherein the circuit to inductively couple comprises;

    a magnetic field transmitter operating at the first harmonic or higher harmonic of the base transmitter frequency.

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