DISSYMMETRIC COIL ANTENNA TO FACILITATE NEAR FIELD COUPLING

• US 20140203990A1
• Filed: 12/21/2011
• Published: 07/24/2014
• 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
• Granted Patent: US 9,831,028 B2
• Time in Patent Office: Days
• US Class Current: 343/866
• 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

1-20. -20. (canceled)

21. A portable device comprising:

a housing;

a continuous loop of coil antenna line installed at the housing, the continuous loop of coil antenna includes a closed loop that defines at least a plane, wherein minimal overlapping area is created when the plane is horizontally flipped at one hundred eighty degrees, and the horizontally flipped plane is superimposed upon the plane originally defined by the closed loop.

22. A portable device as recited in claim 21, wherein the closed loop includes a multiple partially closed top right loop and a multiple partially closed bottom left loop to define the plane, wherein the plane includes a dissymmetric configuration to create the minimal overlapping area.

23. A portable device as recited in claim 21, wherein the coil antenna is identical to all portable devices.

24. A portable device as recited in claim 21, 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).

25. A portable device as recited in claim 21, 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.

26. A portable device as recited in claim 21, 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.

27. 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 to form a closed loop that defines at least a plane;

inducing a current to the coil antenna at resonant frequency; and

minimizing the overlapping area by configuring the coil antenna to be dissymmetric to the plane defined by the coil antenna when horizontally flipped at one hundred eighty degrees, and superimposed upon the plane originally defined by the closed loop.

28. A method as recited in claim 27, wherein the closed loop includes multiple loops.

29. A method as recited in claim 27, wherein the coil antenna is identical to all portable devices.

30. A method as recited in claim 27, wherein the coil antenna 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).

31. A method as recited in claim 27, 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.

32. A method as recited in claim 27, 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.

33. A device comprising:

a continuous loop of coil antenna line that includes a closed loop, which defines at least a plane, wherein minimal overlapping area is created when the plane is horizontally flipped at one hundred eighty degrees, and the horizontally flipped plane is superimposed upon the plane originally defined by the closed loop.

34. A device as recited in claim 33, wherein the closed loop includes a partially closed top right loop and a partially closed bottom left loop to define the plane, wherein the plane includes a dissymmetric configuration to create the minimal overlapping area.

35. A portable device as recited in claim 33, wherein the closed loop includes multiple loops.

36. A device as recited in claim 33, wherein the coil antenna is identical to all portable devices.

37. A device as recited in claim 33, 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).

38. A device as recited in claim 33, wherein the coil antenna is used for near field communication (NFC) tag and reader mode operations for a portable device.

39. A device as recited in claim 33, wherein the coil antenna is a dedicated antenna used for near field coupling and/or wireless power transfer purposes.

40. A device as recited in claim 33, 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.