WIRELESS POWER RECEIVER AND TRANSFER, WIRELESS POWER TRANSCEIVER SYSTEM, AND WIRELESS POWER TRANSCEIVER MOBILE DEVICE

• US 20140062214A1
• Filed: 08/23/2013
• Published: 03/06/2014
• Est. Priority Date: 09/03/2012
• Status: Active Grant

• Current Assignee: soongsil university-industry cooperation foundation
• Original Assignee: soongsil university-industry cooperation foundation
• Inventors: SEO, Chul Hun, LEE, Chongmin
• Granted Patent: US 9,680,225 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: G02F 1/00 Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
• CPC Class Codes: G02F 1/23 for the control of the colour G02F1/03 - G02F1/21 take precedence
• CPC Class Codes: H01Q 15/0086 said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
• CPC Class Codes: H01Q 7/00 Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
• CPC Class Codes: H01Q 7/005 with variable reactance for tuning the antenna
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/48 Transceivers
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless power receiver includes a receiver resonator configured to be coupled to a source resonator to receive a power from the source resonator, the receiver resonator comprising: an inverted U-shaped dielectric layer whose distal ends are bent inward; an antenna patterned in the form of a loop in line with the shape of the dielectric layer; and a meta-structure arranged around the antenna on the dielectric layer, wherein the meta-structure is configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator.

Claims

1. A wireless power receiver comprising:

a receiver resonator configured to be coupled to a source resonator to receive a power from the source resonator, the receiver resonator comprising;

an inverted U-shaped dielectric layer whose distal ends are bent inward;

an antenna patterned in the form of a loop in line with the shape of the dielectric layer; and

a meta-structure arranged around the antenna on the dielectric layer, wherein the meta-structure is configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator.

2. The wireless power receiver of claim 1, wherein the meta-structure comprises one or more meta-pattern layers that are physically separated from the antenna.

3. The wireless power receiver of claim 1, wherein the meta-structure has an effective dielectric constant of a positive value and an effective permeability of a negative value, and

wherein the frequency band absorbed by the meta-structure 206 is different from the resonant frequency.

4. The wireless power receiver of claim 1, wherein the meta-structure comprises a plurality of unit cells with a DHMR (Double H-shape Meta-material Resonator) structure.

5. The wireless power receiver of claim 1, wherein the meta-structure has a Q factor of 100.

6. A wireless power receiver comprising:

a receiver resonator configured to be coupled to a source resonator to receive a power from the source resonator, the receiver resonator comprising;

a first inverted U-shaped dielectric layer whose distal ends are bent inward;

an antenna patterned in the form of a loop in line with the shape of the first dielectric layer;

a first meta-structure arranged on the first dielectric layer around the antenna and configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator;

a second inverted U-shaped dielectric layer located in the exterior of the first dielectric layer; and

a second meta-structure arranged on the second dielectric layer and configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator.

7. The wireless power receiver of claim 6, wherein the second meta-structure is arranged on the same plane as the first meta-structure.

8. The wireless power receiver of claim 7, wherein the second meta-structure is configured to amplify any one of the electric fields and the magnetic fields that are formed in the receiver resonator.

9. The wireless power receiver of claim 6, wherein the second meta-structure is perpendicular to the first meta-structure.

10. The wireless power receiver of claim 9, wherein the second meta-structure is configured to focus any one of the electric fields and the magnetic fields that are formed in the receiver resonator.

11. A wireless power transfer comprising:

a source resonator configured to be coupled to a power supply, the source resonator comprising;

an inverted U-shaped planar dielectric layer whose distal ends are bent inward;

an antenna patterned in the form of a loop in line with the shape of the dielectric layer; and

a meta-structure arranged around the antenna on the dielectric layer and configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator.

12. The wireless power transfer of claim 11, further comprising:

a VCO (Voltage Controlled Oscillator) configured to change a DC voltage for a control from the power supply to control an output oscillation frequency; and

an amplifier configured to amplify an AC signal controlled by the VCO.

13. The wireless power transfer of claim 12, wherein the amplifier comprises an adaptive bias circuit.

14. The wireless power transfer of claim 13, wherein the adaptive bias circuit comprises means to receive information on the charge state from a receiver resonator to stop charging the power.

15. A wireless power transceiver device comprising:

a resonator configured to be coupled to a power supply or a resonator of an external wireless power transceiver device to transfer and receive to and from the external device, the resonator comprising;

an inverted U-shaped dielectric layer whose distal ends are bent inward;

an antenna patterned in the form of a loop in line with the shape of the dielectric layer; and

a meta-structure arranged around of the antenna on the dielectric layer and configured to reinforce at least one of the electric fields and magnetic fields that are formed in the receiver resonator.

16. The wireless power transceiver device of claim 15, wherein the meta-structure is physically separated from the antenna and comprises at least one or more meta-pattern layers that are patterned on the dielectric layer.

17. The wireless power transceiver device of claim 15, wherein the meta-structure has an effective dielectric constant of a positive value and an effective permeability of a negative value, and wherein the frequency band absorbed by the meta-structure is different from the resonant frequency patterned on the dielectric layer.

18. The wireless power transceiver device of claim 15, wherein the meta-structure comprises a plurality of unit cells with a DHMR (Double H-shape Meta-material Resonator) structure.

19. The wireless power transceiver device of claim 15, wherein the meta-structure has a Q factor of 100.

20. The wireless power transceiver device of claim 15, wherein the external wireless power transceiver device comprises:

a transceiver circuit unit configured to convert DC voltage from the power supply and amplify the converted DC voltage;

a receiver circuit unit configured to rectify the power received through the resonator;

a switch unit configured to selectively switch the transfer circuit unit or the receiver circuit unit into the resonator; and

a control unit configured to control the switch unit, receive the charge state information and stop charging the power.