Dissymmetric coil antenna to facilitate near field coupling

• US 9,831,028 B2
• Filed: 12/21/2011
• Issued: 11/28/2017
• Est. Priority Date: 12/21/2011
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Konanur, Anand S., Karacaoglu, Ulun, Yang, Songnan
• Primary Examiner(s): Hsieh, Ping
• Application Number:
  US13/977,047
• Publication Number:
  US 20140203990A1
• Time in Patent Office: 2,169 Days
• Field of Search: 455 411, 455 631, 4555751, 4555621, 455129, 455274, 343908
• CPC Class Codes: G06K 7/10237 the reader and the record carrier being capable of selectively switching between reader and record carrier appearance, e.g. in near field communication [NFC] devices where the NFC device may function as an RFID reader or as an RFID tag
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil
• 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 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

Abstract

Described herein are techniques related to near field coupling and wireless power transfers. For example, a coil antenna configuration is the same in all portable devices; however, when the portable devices are arranged in back to back position with one another, the coil antenna configuration defines a dissymmetric and antenna configuration.

Claims

1. A portable device comprising:

a housing;

a continuous loop of coil antenna line installed at the housing, the continuous loop of coil antenna forms a first closed loop that defines a first plane and a second closed loop that defines a second plane, wherein the first plane is coplanar and dissymmetric with the second.

2. A portable device as recited in claim 1, wherein the first closed loop includes a multiple partially closed top right loop to define the first plane, and the second closed loop includes a multiple partially closed bottom left loop to define the first plane the second plane, respectively.

3. A portable device as recited in claim 1, wherein the coil antenna is identical to all portable devices.

4. A portable device as recited in claim 1, wherein the coil antenna is operated at resonant frequency of 13.56 MHz to implement “

peer-to-peer (P2P) near field communication (NFC)” and

/or wireless power transfer (WPT).

5. A portable device as recited in claim 1, wherein the coil antenna is a dedicated antenna that is used for near field communication (NFC) tag and reader mode operations for the portable device.

6. A portable device as recited in claim 1, wherein the portable device is selected from a group consisting of a mobile phone, a cellular phone, a smartphone, a personal digital assistant, a tablet computer, a netbook, a notebook computer, a laptop computer, a multimedia playback device, a digital music player, a digital video player, a navigational device, and a digital camera.

7. A method of coupling a portable device comprising:

establishing a near field coupling at the portable device that includes a continuous loop of coil antenna line, wherein the coil antenna further forms a first closed loop that defines a first plane and a second closed loop that defines a second plane, wherein the first plane is coplanar and dissymmetric with the second plane; and

inducing a current to the coil antenna at resonant frequency.

8. A method as recited in claim 7, wherein the first and second closed loops include multiple loops.

9. A method as recited in claim 7, wherein the coil antenna is identical to all portable devices.

10. A method as recited in claim 7, wherein the coil antenna is operated at resonant frequency of 13.56 MHz to implement peer-to-peer (P2P) near field communication (NFC) and/or wireless power transfer (WPT).

11. A method as recited in claim 7, wherein the coil antenna is a dedicated antenna that is used for near field communication (NFC) tag and reader mode operations for a portable device.

12. A method as recited in claim 7, wherein the coil antenna is embedded at a portable device that is selected from a group of a mobile phone, a cellular phone, a smartphone, a personal digital assistant, a tablet computer, a netbook, a notebook computer, a laptop computer, a multimedia playback device, a digital music player, a digital video player, a navigational device, and a digital camera.

13. A device comprising:

a continuous loop of coil antenna line that forms a first closed loop, which defines a first plane, and a second closed loop that defines a second plane, wherein the first plane is coplanar and dissymmetric with the second plane.

14. A device as recited in claim 13, wherein the first closed loop includes a partially closed top right loop while the second closed loop includes a partially closed bottom left loop to define the first plane and the second plane, respectively.

15. A portable device as recited in claim 13, wherein the closed loop includes multiple loops.

16. A device as recited in claim 13, wherein the coil antenna is identical to all portable devices.

17. A device as recited in claim 13, wherein the coil antenna is operated at resonant frequency of 13.56 MHz to implement peer-to-peer (P2P) near field communication (NFC) and/or wireless power transfer (WPT).

18. A device as recited in claim 13, wherein the coil antenna is used for near field communication (NFC) tag and reader mode operations for a portable device.

19. A device as recited in claim 13, wherein the coil antenna is a dedicated antenna used for near field coupling and/or wireless power transfer purposes.

20. A device as recited in claim 13, wherein the device is included at a portable device that is selected from a group of a mobile phone, a cellular phone, a smartphone, a personal digital assistant, a tablet computer, a netbook, a notebook computer, a laptop computer, a multimedia playback device, a digital music player, a digital video player, a navigational device, and a digital camera.