Resonant circuit dynamic optimization system and method

• US 10,693,525 B2
• Filed: 03/27/2013
• Issued: 06/23/2020
• Est. Priority Date: 03/27/2012
• Status: Active Grant

• Current Assignee: Triune Ip, LLC (Semtech Corporation)
• Original Assignee: Triune Ip, LLC (Semtech Corporation)
• Inventors: Teggatz, Ross E., Knight, Jonathan, Kawamura, Patrick, Chen, Wayne T.
• Primary Examiner(s): Kessie, Daniel
• Application Number:
  US13/851,892
• Publication Number:
  US 20130257171A1
• Time in Patent Office: 2,645 Days
• CPC Class Codes: H01Q 1/50 Structural association of antennas with earthing switches, lead-in devices or lightning protectors
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 3/02 using mechanical movement of antenna or antenna system as a whole
• CPC Class Codes: H01Q 3/24 varying the orientation by switching energy from one active radiating element to another, e.g. for beam switching
• 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: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A resonant circuit dynamic optimization system is described herein that can exhibit improved system charging functionality, can have multi-input charging functionality, and can improve the efficiency and speed of charging electronic devices. The resonant circuit dynamic optimization system can comprise at least one antenna configured to receive or transmit an electromagnetic signal, at least one variable component, and at least one dynamic adjustment circuit. The dynamic adjustment circuit can adjust the variable component to thereby modify the power transfer efficiency of the electromagnetic signal.

Claims

1. A resonant circuit dynamic optimization system, said system comprising:

at least one first antenna configured to receive or transmit at least one electromagnetic signal from or to a second antenna;

at least one variable circuit having at least one non-variable circuit component operatively coupled to said antenna, wherein said variable circuit is configured to modify the power transfer efficiency of said electromagnetic signal by modifying a resonant frequency of the first antenna; and

at least one dynamic adjustment circuit operatively coupled to said circuit component, wherein said variable circuit is configured to adjust an impedance value in response to the dynamic adjustment circuit, and the dynamic adjustment circuit is configured to determine a power transfer efficiency of the first antenna with the second antenna by measuring a signal across the at least one non-variable circuit component.

2. The resonant circuit dynamic optimization system of claim 1 wherein said variable circuit comprises a variable capacitor, a variable inductor, a variable resistor, a variable antenna configuration, or combinations thereof.

3. The resonant circuit dynamic optimization system of claim 2 wherein said variable circuit comprises said variable antenna configuration, wherein said variable antenna configuration comprises at least one adjustable inductance antenna.

4. The resonant circuit dynamic optimization system of claim 2 wherein said variable circuit comprises said variable antenna configuration, wherein said variable antenna configuration comprises a plurality of switchable antennas comprising at least two shapes.

5. The resonant circuit dynamic optimization system of claim 2 wherein said variable circuit comprises said variable antenna configuration, wherein said variable antenna configuration comprises a one or more switchable antennas selected from the group consisting of series switchable antennas and parallel switchable antennas.

6. The resonant circuit dynamic optimization system of claim 2 wherein said variable circuit comprises said variable antenna configuration, wherein said variable antenna configuration comprises a plurality of switchable antennas.

7. The resonant circuit dynamic optimization system of claim 6 wherein said plurality of switchable antennas comprises at least one additional antenna configured to be switched into and shunted out of said variable antenna configuration.

8. The resonant circuit dynamic optimization system of claim 2 wherein said variable circuit comprises said variable antenna configuration, wherein said variable antenna configuration comprises a dynamically steerable antenna.

9. The resonant circuit dynamic optimization system of claim 8 wherein said dynamically steerable antenna further comprises a motor, a transducer, or a combination thereof.

10. The resonant circuit dynamic optimization system of claim 1 further comprises a communication link associated with a first dynamic adjustment circuit, a second dynamic adjustment circuit, and intermediate dynamic adjustment circuit and configured to receive a communication signal that is separate and distinct from the electromagnetic signal.

11. The resonant circuit dynamic optimization system of claim 10 wherein said communication link comprises a ZigBee configuration, a WiFi configuration, a wireless local area network, or combinations thereof.

12. The resonant circuit dynamic optimization system of claim 10 wherein said communication link comprises a wired link, an optical link, or a combination thereof.

13. The resonant circuit dynamic optimization system of claim 1 wherein said variable circuit comprises at least one variable load, wherein said variable load comprises a resistive load, a complex load, or a combination thereof.

14. The resonant circuit dynamic optimization system of claim 1 wherein said variable circuit is connected in a parallel configuration, a series configuration, or a parallel and series combination configuration.

15. The resonant circuit dynamic optimization system of claim 1 wherein said variable circuit is configured to modify the amplitude of said electromagnetic signal and the frequency of said electromagnetic signal.

16. The resonant circuit dynamic optimization system of claim 1 further comprising:

a first system having an intermediate antenna, the first system generating the electromagnetic signal; and

a second system having the secondary antenna and a load.

17. The resonant circuit dynamic optimization system of claim 1 further comprising:

a first system having an intermediate-antenna, the first system having a driver to generate the electromagnetic signal; and

a second system having the secondary antenna and a load.

18. The resonant circuit dynamic optimization system of claim 1 wherein said dynamic adjustment circuit is configured to determine the power transfer efficiency of said electromagnetic signal as a function of the at least one antenna, an intermediate antenna associated with a first system and the secondary antenna associated with a second system, wherein the electromagnetic signal is a wireless power signal that is transmitted from the at least one antenna to the secondary antenna and the power transfer efficiency is modified by the intermediate antenna and the first system.

19. The resonant circuit dynamic optimization system of claim 1 further comprising at least one rectifier operatively coupled to said dynamic adjustment circuit, wherein said dynamic adjustment circuit is configured to determine a power transfer efficiency of the first antenna with the second antenna by measuring a signal across the at least one circuit component operatively coupled to the first antenna configured to receive at least one electromagnetic signal from a second antenna.

20. The resonant circuit dynamic optimization system of claim 19 wherein said rectifier comprises an active bridge or a passive bridge.

21. The resonant circuit dynamic optimization system of claim 19 wherein said rectifier comprises a full bridge, or a half bridge.

22. The resonant circuit dynamic optimization system of claim 19 wherein said rectifier comprises an active bridge, wherein said active bridge comprises a fully synchronous bridge or a half synchronous bridge.

23. The resonant circuit dynamic optimization system of claim 19 wherein said rectifier comprises a dynamic bridge, wherein said dynamic bridge comprises a fully synchronous bridge, a half synchronous bridge, or an asynchronous bridge.

24. The resonant circuit dynamic optimization system of claim 1 further comprising at least one power capacitor operatively coupled to said dynamic adjustment circuit.

25. The resonant circuit dynamic optimization system of claim 1 further comprising at least one power conditioner operatively coupled to said dynamic adjustment circuit.

35. The resonant circuit dynamic optimization system of claim 1 further comprises a communication link configured to receive a communication signal that is separate and distinct from the electromagnetic signal and provides spatial location information.

26. A resonant circuit dynamic optimization system, said system comprising:

an intermediate antenna configured to receive or transmit at least one electromagnetic signal;

an intermediate variable circuit component operatively coupled to said intermediate antenna, wherein said intermediate variable circuit component is configured to modify the power transfer efficiency of said electromagnetic signal;

an intermediate dynamic adjustment circuit operatively coupled to said intermediate variable circuit component, wherein said intermediate variable circuit component is configured to be responsive to said intermediate dynamic adjustment circuit;

at least one secondary antenna configured to receive or transmit said electromagnetic signal;

a secondary variable circuit component operatively coupled to said secondary antenna, wherein said secondary variable circuit component is configured to modify the power transfer efficiency of said electromagnetic signal between the intermediate antenna and the secondary antenna; and

a secondary dynamic adjustment circuit operatively coupled in parallel to said secondary variable circuit component, wherein said secondary variable circuit component is configured to be responsive to said secondary intermediate dynamic adjustment circuit.

27. A resonant circuit dynamic optimization system, said system comprising:

at least one dynamic adjustment circuit;

at least one antenna operatively coupled to said dynamic adjustment circuit, wherein said antenna is configured to communicate at least one electromagnetic signal to one or more adjacent antennas, and the dynamic adjustment circuit is configured to determine a power transfer efficiency of the electromagnetic signal coupling between the antenna and a second antenna and to modify a resonant frequency of the antenna to improve the efficiency; and

at least one variable circuit component operatively coupled to in parallel to a circuit element of said dynamic adjustment circuit, wherein said variable circuit component is configured to respond to an adjustment signal from said dynamic adjustment circuit.

28. The resonant circuit dynamic optimization system of claim 27 wherein the dynamic adjustment circuit is configured to dynamically adjust a resonance of a power transfer circuit based on a signal received from a second dynamic adjustment circuit.

29. The resonant circuit dynamic optimization system of claim 28 further comprising a communication link that is uni-directional, bi-directional, or a combination thereof and is separate and distinct from the power transfer circuit and provides information used by the dynamic adjustment circuit.

30. The resonant circuit dynamic optimization system of claim 27 further comprising at least one load operatively coupled to said dynamic adjustment circuit, wherein said load is configured to communicate at least one power signal using a resonant wireless power transfer circuit.

31. A method of resonant circuit dynamic optimization, said method comprising the steps of:

(a) receiving at least one electromagnetic signal;

(b) determining a power transfer efficiency of said electromagnetic signal from a first antenna to a second antenna with a dynamic adjustment circuit based on a signal developed across a non-variable circuit element of a variable circuit; and

(c) modifying said power transfer efficiency with at least one variable circuit component by changing a resonant frequency of one or more of the first antenna and the second antenna.

32. The method of claim 31 wherein said determining of step (b) is at least partially based upon said intermediate communication signal.

33. The method of claim 31 further comprising the step of generating at least one power signal at least partially based upon said electromagnetic signal.

34. The method of claim 31 wherein said variable circuit component comprises a variable capacitor, a variable inductor, a variable resistor, or combinations thereof.