Patent ID: 9634495
Date: 2017-04-25
CPC Classifications: H02J

Claim:
1. A system for wireless energy transfer, the system comprises: a resonator circuit for wireless transmission of energy, the resonator circuit comprising: a transmitter coil having a large number of windings N a variable capacitance device connected in shunt across the transmitter coil with the transmitter coil and the variable capacitor and intrinsic capacitance of the transmitter coil forming the resonator circuit; and an input coil configured to be coupled to an input RF source, with the input coil having a low number of windings N a circuit inductively coupled to the resonator circuit to effectively produce a rectified voltage having a DC component, wherein the circuit inductively coupled to the resonator circuit comprises at least one of: (i) a tunable passive resonator tuned to a harmonic of the resonant frequency or (ii) a magnetic field transmitter operating at the first harmonic or higher harmonic of the base transmitter frequency.