Antenna for wireless power transmission and near field communication

• US 9,685,994 B2
• Filed: 12/04/2013
• Issued: 06/20/2017
• Est. Priority Date: 12/04/2012
• Status: Active Grant

• Current Assignee: Korea Advanced Institute of Science and Technology, Samsung Electronics Co. Ltd.
• Original Assignee: Korea Advanced Institute of Science and Technology, Samsung Electronics Co. Ltd.
• Inventors: Kim, Ki Young, Kim, Nam Yun, Park, Yun Kwon, Park, Jae Hyun, Song, Keum Su, Ryu, Young Ho, Yoon, Chang Wook, Ahn, Chi Hyung, Kim, Dong Zo, Kwon, Sang Wook, Yu, Jong Won, Lee, Wang Sang
• Primary Examiner(s): MANCUSO, HUEDUNG XUAN CAO
• Application Number:
  US14/096,915
• Publication Number:
  US 20140152516A1
• Time in Patent Office: 1,294 Days
• Field of Search: 343720, 343867, 343895, 343702
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• 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: H04B 5/0081 with antenna coils loop aerials H01Q7/00
• CPC Class Codes: H04B 5/26 using coils
• CPC Class Codes: H04B 5/72 for local intradevice communication
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

A dual antenna for wireless communication transmission (WPT) and near field communication (NFC) includes a loop antenna, and a dual loop antenna disposed at an inside and an outside of the loop antenna.

Claims

1. A dual antenna comprising:

a loop antenna; and

a dual loop antenna comprising a single antenna with two loops, the two loops comprise a first loop and a second loop surrounding the first loop, the first loop disposed at an inside of the loop antenna and the second loop disposed at an outside of the loop antenna,

wherein the loop antenna and the dual loop antenna are separate and distinct antennas.

2. The dual antenna of claim 1, wherein the loop antenna is configured to perform wireless power transmission;

and

the dual loop antenna is configured to perform near field communication.

3. The dual antenna of claim 1, wherein the loop antenna is configured to generate a first field;

and

the dual loop antenna is configured to generate a second field offsetting the first field.

4. The dual antenna of claim 1, wherein the loop antenna and the dual loop antenna are configured so that an induced current generated in the dual loop antenna by a field generated by the loop antenna is less than or equal to a threshold value.

5. A dual antenna comprising:

a loop antenna; and

a dual loop antenna disposed at an inside and an outside of the loop antenna,

wherein the dual loop antenna comprises;

an inner portion disposed at the inside of the loop antenna;

a first outer portion disposed at the outside of the loop antenna;

a second outer portion disposed at the outside of the loop antenna;

a first connecting portion connecting a first end of the inner portion to an end of the first outer portion; and

a second connecting portion connecting a second end of the inner portion to an end of the second outer portion.

6. The dual antenna of claim 5, wherein the first connecting portion overlaps the loop antenna disposed on a plane;

and

the second connecting portion overlaps the loop antenna.

7. A dual antenna comprising:

a first antenna comprising a circle or polygon shape that is partially cut; and

a second antenna comprising a single antenna with two loops, the two loops comprise a first loop and a second loop surrounding the first loop, the first loop disposed at an inside of the first antenna and the second loop disposed at an inside and an outside of the first antenna.

8. The dual antenna of claim 7, wherein the first antenna and the second antenna are disposed on a plane.

9. The dual antenna of claim 7, wherein the first antenna is for performing wireless power transmission using a first frequency;

and

the second antenna is for performing near field communication using a second frequency.

10. The dual antenna of claim 7, wherein the first antenna has a high Q value;

and

the second antenna has a low Q value.

11. The dual antenna of claim 7, wherein:

the first antenna is configured to generate a first field; and

the second antenna is configured to generate a second field offsetting the first field.

12. The dual antenna of claim 7, wherein the first antenna and the second antenna are configured so that an induced current generated in the second antenna by a field generated by the first antenna is less than or equal to a threshold value.

13. A dual antenna comprising:

a first antenna comprising a circle or polygon shape that is partially cut; and

a second antenna disposed at an inside and an outside of the first antenna,

wherein the second antenna comprises;

an inner portion disposed at the inside of the first antenna;

a first outer portion disposed at the outside of the first antenna;

a second outer portion disposed at the outside of the first antenna;

a first connecting portion connecting a first end of the inner portion to an end of the first outer portion; and

a second connecting portion connecting a second end of the inner portion to an end of the second outer portion.

14. The dual antenna of claim 13, wherein the first connecting portion overlaps the first antenna disposed on a plane;

and

the second connecting portion overlaps the first antenna.

15. The dual antenna of claim 14, wherein the first connecting portion and the first antenna are insulated from each other;

and

the second connecting portion and the first antenna are insulated from each other.

16. A dual antenna comprising:

a first antenna configured to generate a first field; and

a second antenna configured to generate a second field offsetting the first field,

wherein the second antenna comprises a single antenna with two loops, the two loops comprise a first loop and a second loop surrounding the first loop, the first loop disposed at an inside of the first antenna and the second loop disposed at an outside of the first antenna.

17. The dual antenna of claim 16, wherein the first antenna is for performing wireless power transmission;

and

the second antenna is for performing near field communication.