DUAL-MODE WIRELESS POWER RECEIVER

• US 20140159656A1
• Filed: 02/17/2014
• Published: 06/12/2014
• Est. Priority Date: 08/03/2012
• Status: Active Grant

• Current Assignee: MediaTek Singapore Pte. Ltd. (MediaTek, Inc.)
• Original Assignee: MediaTek Singapore Pte. Ltd. (MediaTek, Inc.)
• Inventors: Riehl, Patrick Stanley
• Granted Patent: US 9,859,744 B2
• Time in Patent Office: Days
• US Class Current: 320/108
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/402 the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas

Abstract

A dual-mode receiver is provided that includes an electromagnetic resonator having one or more inductive elements that are arranged to form a receiver coil and a network of passive components arranged to form a matching network.

Claims

1. A dual-mode receiver comprising an electromagnetic resonator that includes one or more inductive elements that are arranged to form a receiver coil and a network of passive components arranged to form a matching network, the electromagnetic resonator having a first selective frequency defined in a low frequency range and a second selective frequency defined in a high frequency range allowing for a rectification circuit to operate in both the high frequency range and low frequency range making maximum use of active circuits.

2. The dual-mode receiver of claim 1, wherein the one or more inductive elements are arranged to produce a low-Q inductive charging receiver in the low frequency range.

3. The dual-mode receiver of claim 1, wherein the one or more inductive elements are arranged to produce a high-Q inductive charging receiver in the high frequency range.

4. The dual-mode receiver of claim 1, wherein the rectification circuits comprise a bridge rectifier.

5. The dual-mode receiver of claim 1, wherein the rectification circuits comprise a synchronous rectifier.

6. The dual-mode receiver of claim 1, wherein the electromagnetic resonator comprises an inductive wireless component and a resonant wireless power component.

7. The dual-mode receiver of claim 1, wherein the effective inductance of the electromagnetic resonator is lowered at the high frequency range.

8. The dual-mode receiver of claim 1, wherein the effective inductance of the electromagnetic resonator is increased at the low frequency range.

9. The dual-mode receiver of claim 1, wherein the one or more inductive elements comprise two inductive elements designed to receive low-frequency power and high-frequency power, and are fabricated in the same plane of a printed circuit board.

10. The dual-mode receiver of claim 1, wherein the one or more inductive elements are arranged in a concentric manner with the high-frequency element on the outside.

11. The dual-mode receiver of claim 1, where the one or more inductive elements are arranged in a concentric manner with the high-frequency element on the inside.

12. The dual-mode receiver of claim 1, wherein high-Q resonances occur at both the first selective frequency and the second selective frequency.

13. A wireless receiver comprising an electromagnetic resonator that includes one or more inductive elements that are arranged to form a receiver coil and a network of passive components arranged to form a matching network, the electromagnetic resonator having a first selective frequency defined in a low frequency range and a second selective frequency defined in a high frequency range allowing for a rectification circuit to operate in both the high frequency range and low frequency range making maximum use of active circuits.

14. The wireless receiver of claim 13, wherein the one or more inductive elements are arranged to produce a low-Q inductive charging receiver in the low frequency range.

15. The wireless receiver of claim 13, wherein the one or more inductive elements are arranged to produce a high-Q inductive charging receiver in the high frequency range.

16. The wireless receiver of claim 13, wherein the rectification circuits comprise a bridge rectifier.

17. The wireless receiver of claim 13, wherein the rectification circuits comprise a synchronous rectifier.

18. The wireless receiver of claim 13, wherein the electromagnetic resonator comprises an inductive wireless component and a resonant wireless power component.

19. The wireless receiver of claim 13, wherein the effective inductance of the electromagnetic resonator is lowered at the high frequency range.

20. The wireless receiver of claim 13, wherein the effective inductance of the electromagnetic resonator is increased at the low frequency range.

21. The wireless receiver of claim 13, wherein the one or more inductive elements comprise two inductive elements designed to receive low-frequency power and high-frequency power, and are fabricated in the same plane of a printed circuit board.

22. The wireless receiver of claim 13, wherein the one or more inductive elements are arranged in a concentric manner with the high-frequency element on the outside.

23. The wireless receiver of claim 13, where the one or more inductive elements are arranged in a concentric manner with the high-frequency element on the inside.

24. The wireless receiver of claim 13, wherein high-Q resonances occur at both the first selective frequency and the second selective frequency.

25. A method of performing the operations of a wireless receiver comprising:

arranging an electromagnetic resonator to include one or more inductive elements that are arranged to form a receiver coil and a network of passive components arranged to form a matching network; and

providing the electromagnetic resonator having a first selective frequency defined in a low frequency range and a second selective frequency defined in a high frequency range allowing for a rectification circuit to operate in both the high frequency range and low frequency range making maximum use of active circuits.

26. The method of claim 25, wherein the one or more inductive elements are arranged to produce a high-Q inductive charging receiver in the low frequency range.

27. The method of claim 25, wherein the one or more inductive elements are arranged to produce a low-Q inductive charging receiver in the high frequency range.

28. The method of claim 25, wherein the rectification and regulation circuits comprise a bridge rectifier.

29. The method of claim 25, wherein the rectification and regulation circuits comprise a synchronous rectifier.

30. The method of claim 25, wherein the electromagnetic resonator comprises an inductive wireless component and a resonant wireless power component.

31. The method of claim 25, wherein the effective inductance of the electromagnetic resonator is lowered at the high frequency range.

32. The method of claim 25, wherein the effective inductance of the electromagnetic resonator is increased at the low frequency range.

33. The method of claim 25, wherein the one or more inductive elements comprise two inductive elements designed to receive low-frequency power and high-frequency power, and are fabricated in the same plane of a printed circuit board.

34. The method of claim 25, wherein the one or more inductive elements are arranged in a concentric manner with the high-frequency element on the outside.

35. The method of claim 25, where the one or more inductive elements are arranged in a concentric manner with the high-frequency element on the inside.

36. The method of claim 25, wherein high-Q resonances occur at both the first selective frequency and the second selective frequency.