Wireless powering and charging station

• US 20090179502A1
• Filed: 01/14/2009
• Published: 07/16/2009
• Est. Priority Date: 01/14/2008
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Nigel Power LLC (Qualcomm, Inc.)
• Inventors: Widmer, Hanspeter, Sieber, Lukas, Cook, Nigel P.
• Granted Patent: US 8,294,300 B2
• Time in Patent Office: Days
• US Class Current: 307/104
• CPC Class Codes: H01F 38/14 Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10
• CPC Class Codes: H01Q 1/248 provided with an AC/DC converting device, e.g. rectennas
• 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: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 50/12 of the resonant type
• CPC Class Codes: H02J 50/50 using additional energy repeaters between transmitting devices and receiving devices
• CPC Class Codes: H02J 7/0044 specially adapted for holding portable devices containing batteries H02J7/0045 takes precedence

Abstract

A base with a portable device that relays energy to the portable device.

Claims

1. A system comprising:

a base for a portable device, having surfaces that are shaped to mechanically hold to outer surfaces of a portable device, and having a magnetically resonant antenna therein, said antenna formed of a coil portion in series with a capacitive portion, said antenna having an LC value which is tuned to a specified frequency.

2. A system as in claim 1, wherein said antenna is integrated in a location which defines substantially a perimeter of the portable device.

3. A system as in claim 2, wherein said perimeter of the base is substantially disk shaped.

4. A system as in claim 2, wherein said inner surfaces are sized to hold a portable phone.

5. A system as in claim 1, further comprising a magnetic transmitter, wherein said magnetic transmitter produces magnetic energy at a frequency that is resonant with a frequency defined by said antenna and third base.

6. A system as in claim 1, wherein said magnetically resonant antenna includes a coil in series with a capacitor.

7. A system as in claim 1, further comprising electrical contacts which connect to the portable device.

8. A system as in claim 6, wherein said magnetically resonant antenna also includes a coupling loop, electrically separate from the coil and capacitor, and wherein said coil and capacitor are not electrically connected to said contacts.

9. A system comprising:

a transmitter of magnetic energy, transmitting at a first frequency, said transmitter having an inductive coil and a capacitor, with an LC value that is resonant with said first frequency;

a base, having surfaces that are shaped to mechanically hold outer surfaces of a portable device, and having a magnetically resonant antenna therein, said antenna formed of an inductive coil portion in series with a capacitive portion, said antenna having an LC value which is resonant with said first frequency.

10. A system as in claim 9, wherein said antenna is integrated in a location which defines substantially a perimeter of the portable device.

11. A system as in claim 10, wherein said perimeter of the base is substantially disk shaped.

12. A system as in claim 9, wherein said inner surfaces are sized to hold a portable phone.

13. A system as in claim 9, further comprising electrical contacts which connect to the portable device.

14. A system as in claim 13, wherein said magnetically resonant antenna also includes a coupling loop, electrically separate from the coil and capacitor, and wherein said coil and capacitor are not electrically connected to said contacts.