Dissymmetric coil antenna to facilitate near field coupling

Patent metadata

Field	Value
Publication number	US-9831028-B2
Application number	US-201113977047-A
Country	US
Kind code	B2
Filing date	Dec 21, 2011
Priority date	Dec 21, 2011
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

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.

First claim

What is claimed is:

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.

Assignees

• Konanur Anand S
• Karacaoglu Ulun
• Yang Songnan
• Intel Corp

Inventors

• Konanur Anand S
• Karacaoglu Ulun
• Yang Songnan

Classifications

• H01F38/14 Primary

  Inductive couplings {(for wireless supply or distribution of electric power using inductive coupling H02J50/10)} · CPC title

• G06K7/10336

  the antenna being of the near field type, inductive coil · CPC title

• H01Q7/00 Primary

  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 title

• G06K7/10237

  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 title