WIRELESS POWERED TELEVISION

1 . (canceled)

2 . A system for providing power wirelessly to a vehicle, the system comprising:

a source magnetic resonator;

an impedance matching network coupled to the source magnetic resonator;

power circuitry coupled to the impedance matching network and configured to energize the source magnetic resonator to generate an oscillating magnetic field, wherein during operation of the system, power is transferred wirelessly to a device magnetic resonator coupled to a vehicle; and

a first member formed of a first magnetic material,

wherein the first member is positioned so that during operation of the system, the first member modifies a spatial distribution of the oscillating magnetic field to reduce energy transfer losses due to formation of field-induced eddy currents in the impedance matching network, relative to losses that would otherwise occur due to formation of currents in the impedance matching network absent the first member.

3 . The system of claim 2 , wherein the first member modifies the spatial distribution of the oscillating magnetic field to reduce an amplitude of the oscillating magnetic field that reaches the impedance matching network, relative to the field amplitude that would otherwise reach the impedance matching network absent the first member, thereby reducing energy transfer losses.

4 . The system of claim 2 , wherein the first member modifies the spatial distribution of the oscillating magnetic field by deflecting or guiding magnetic field lines away from the impedance matching network.

5 . The system of claim 2 , wherein the first member prevents formation of field-induced eddy currents in the impedance matching network by blocking the oscillating magnetic field from reaching the impedance matching network.

6 . The system of claim 2 , wherein the first magnetic material comprises ferrite.

7 . The system of claim 2 , wherein the first member is positioned between the source magnetic resonator and the power circuitry.

8 . The system of claim 2 , wherein the first member at least partially covers the impedance matching network.

9 . The system of claim 2 , wherein the first member fully encloses the impedance matching network.

10 . The system of claim 2 , wherein the source magnetic resonator has an intrinsic quality factor, Q, larger than 100.

11 . The system of claim 2 , further comprising a second member formed of a second conductive material, wherein the second member at least partially covers the impedance matching network.

12 . The system of claim 11 , wherein the second member is positioned between the first member and the impedance matching network.

13 . The system of claim 11 , wherein the first member contacts at least a portion of the second member.

14 . The system of claim 11 , wherein:

the first member comprises a first planar portion defining a first plane;

the second member comprises a second planar portion defining a second plane, wherein the first and second planes are oriented parallel to one another;

during operation of the system, the oscillating magnetic field oscillates at a frequency f;

the second magnetic material has a skin depth at the frequency f; and

a thickness of the second member, measured in a direction orthogonal to the second plane, is larger than the skin depth.

15 . The system of claim 14 , wherein the source magnetic resonator comprises one or more loops formed of a third conductive material and forming a planar coil extending in a third plane oriented parallel to the first plane.

16 . A system for providing power wirelessly to a vehicle, the system comprising:

a device magnetic resonator coupled to the vehicle;

an impedance matching network coupled to the device magnetic resonator;

power circuitry coupled to the impedance matching network; and

a first member formed of a first magnetic material,

wherein during operation of the system:

the device magnetic resonator is configured to receive power wirelessly from an oscillating magnetic field generated by a source magnetic resonator; and

the first member is positioned so that the first member modifies a spatial distribution of the oscillating magnetic field to reduce energy transfer losses due to formation of field-induced eddy currents in the impedance matching network, relative to losses that would otherwise occur due to formation of currents in the impedance matching network absent the first member.

17 . The system of claim 16 , wherein the first member modifies the spatial distribution of the oscillating magnetic field to reduce an amplitude of the oscillating magnetic field that reaches the impedance matching network, relative to the field amplitude that would otherwise reach the impedance matching network absent the first member, thereby reducing energy transfer losses.

18 . The system of claim 16 , wherein the first member prevents formation of field-induced eddy currents in the impedance matching network by blocking the oscillating magnetic field from reaching the impedance matching network.

19 . The system of claim 16 , wherein the first member is positioned between the device magnetic resonator and the impedance matching network and at least partially covers the impedance matching network.

20 . The system of claim 16 , further comprising a second member formed of a second conductive material, wherein the second member is positioned between the first member and the impedance matching network, and wherein the second member at least partially covers the impedance matching network.

21 . The system of claim 20 , wherein:

the first member comprises a first planar portion defining a first plane;

the second member comprises a second planar portion defining a second plane, wherein the first and second planes are oriented parallel to one another;

during operation of the system, the oscillating magnetic field oscillates at a frequency f;

the second magnetic material has a skin depth at the frequency f; and

a thickness of the second member, measured in a direction orthogonal to the second plane, is larger than the skin depth.