Integrated Repeaters For Cell Phone Applications

• US 20150236546A1
• Filed: 12/19/2014
• Published: 08/20/2015
• Est. Priority Date: 09/27/2008
• Status: Abandoned Application

• Current Assignee: WiTricity Corporation
• Original Assignee: WiTricity Corporation
• Inventors: Kesler, Morris P., Kurs, Andre B., Karalis, Aristeidis, Soljacic, Marin, Hall, Katherine L., Giler, Eric R.
• Application Number:
  US14/576,810
• Publication Number:
  US 20150236546A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/23 characterised by the type of transmitting antennas, e.g. directional array antennas or Yagi antennas
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 50/60 responsive to the presence of foreign objects, e.g. detection of living beings
• CPC Class Codes: H02J 50/70 involving the reduction of electric, magnetic or electromagnetic leakage fields
• CPC Class Codes: H02J 50/90 involving detection or optimisation of position, e.g. alignment
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A wireless power receiving system for a mobile electronic device that includes a high-Q repeater resonator comprising at least an inductor and a capacitor and having a Q-factor Q1. The inductor of the repeater resonator is enclosed in a removable sleeve of the mobile electronic. The system also includes a high-Q device resonator comprising at least an inductor and a capacitor and having a Q-factor Q2. The device resonator is integrated in the mobile device and electrically connected to the mobile electronic device, and the square root of the product Q1 and Q2 is greater than 100.

Claims

1. A wireless power receiving system for a mobile electronic device, comprising:

a high-Q repeater resonator comprising at least an inductor and a capacitor and having a Q-factor Q1 and a characteristic size, x1;

a high-Q device resonator comprising at least an inductor and a capacitor and having a Q-factor Q2 and a characteristic size, x2,

wherein at least the inductor of the repeater resonator is enclosed in a removable sleeve,

wherein the device resonator is integrated in the mobile device, and

wherein x1 is larger than x2 and the square root of the product Q1 and Q2 is greater than 100.

2. The system of claim 1, wherein the inductor of the repeater comprises wire.

3. The system of claim 1, wherein the inductor of the repeater comprises a printed circuit trace.

4. The system of claim 1, wherein the inductor of the repeater comprises magnetic material.

5. The system of claim 1, wherein the repeater resonator is tunable.

6. The system of claim 1, wherein the device resonator is tunable.

7. The system of claim 1, wherein the mobile electronic device comprises a phone.

8. The system of claim 1, wherein the mobile electronic device comprises wireless communications capabilities.

9. The system of claim 1, wherein the device resonator is integrated with a battery pack.

10. A wireless power receiving system for a mobile electronic device, comprising;

a high-Q resonator comprising at least an inductor and a capacitor and having a Q-factor Q1>

100 and a characteristic size, x1,

wherein the resonator is integrated into the housing of the mobile device and is not connected via a wired connection to any charging circuitry of the mobile device, and

wherein the resonator is configured to capture power from an oscillating magnetic field and deliver power to the charging circuitry of the mobile device via a wireless power receiver coupled to the charging circuitry.

11. The system of claim 10, wherein the mobile electronic device is a cell phone.

12. The system of claim 10, wherein the housing comprises the back portion of the mobile electronic device.

13. The system of claim 10, wherein the housing comprises a battery door.

14. The system of claim 10, wherein the wireless receiver power receiver comprises a high-Q resonator, Q2.

15. The system of claim 14, wherein the square root of the product of Q1 and Q2 is greater than 100.

16. The system of claim 14, wherein at least one resonator is tunable.

17. The system of claim 10, wherein the mobile electronic device receives power from a source resonator in a source resonator enclosure when the source resonator enclosure and the mobile electronic device are not physically contacting each other.

18. A method for supplying wireless power to a mobile electronic device, comprising:

providing a high-Q resonator integrated into the housing of the mobile electronic device having no wired connection to any charging circuitry of the device;

providing a wireless power receiver directly connected to the charging circuitry of the mobile electronic device;

capturing power in the high-Q resonator when the high-Q resonator is in proximity to an oscillating magnetic field; and

wirelessly transmitting said captured power to the wireless power receiver of the mobile electronic device.

19. The method of claim 18, wherein the mobile electronic device is a cell phone.

20. The method of claim 18, wherein the housing of the electronic device comprises a plastic cover.

21. The method of claim 18, wherein the housing of the electronic device comprises a back portion of the device.