IP Library › Granted Patent US 9,805,861
Granted Patent B2
US 9,805,861 · App. 14/551,406 · Granted Oct 31, 2017

Communication terminal including close-proximity communication coil, power transmission coil, and metal plate

Inventors: Noboru Kato (Nagaokakyo, JP); Masahiro Ozawa (Nagaokakyo, JP)
Assignee: Murata Manufacturing Co., Ltd.
H01F27/36H01F27/28H01F38/14H01Q1/243H01Q1/248H01Q7/00H01Q21/28H02J5/005H04B5/0031H04B5/0037H04B5/0081H04B5/0087H04W4/008H02J7/0042H02J7/025H04M1/0202
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Quick Facts
Patent No.
US 9,805,861
App. No.
14/551,406
Granted
Oct 31, 2017
Kind
B2
Abstract

A communication terminal includes a close-proximity communication coil, a power transmission coil, and a metal plate. The close-proximity communication coil is configured to be used in a close-proximity communication system. The power transmission coil is configured to be used in a contactless power transmission system. At least a portion of the metal plate is disposed between the close-proximity communication coil and the power transmission coil. The close-proximity communication coil and the power transmission coil are disposed in non-overlapping locations when viewed from a direction perpendicular or substantially perpendicular to a main surface of the metal plate. At least one of the close-proximity communication coil and the power transmission coil electromagnetically couples with the metal plate.

Claims (57)

1. A communication terminal comprising:

a close-proximity communication coil configured to be used in a close-proximity communication system;

a power transmission coil configured to be used in a contactless power transmission system; and

a metal plate; wherein

at least a portion of the metal plate is disposed between the close-proximity communication coil and the power transmission coil when viewed from a direction perpendicular or substantially perpendicular to a main surface of the metal plate;

the close-proximity communication coil and the power transmission coil are disposed in non-overlapping locations when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate;

the close-proximity communication coil is electromagnetically coupled with the metal plate;

a portion of the close-proximity communication coil overlaps with the metal plate when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate;

the metal plate includes a first slit portion; and

a coil opening portion of the close-proximity communication coil overlaps with the first slit portion when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

2. The communication terminal according to claim 1 , wherein the close-proximity communication coil and the power transmission coil are spaced from each other by no less than a coil radius of the close-proximity communication coil and no less than a coil radius of the power transmission coil, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

3. The communication terminal according to claim 1 , wherein the close-proximity communication coil and the power transmission coil are disposed in locations facing each other with a central portion of the metal plate located therebetween, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

4. The communication terminal according to claim 1 , wherein the communication terminal is a smartphone.

5. The communication terminal according to claim 1 , further comprising a camera located at a center or approximate center of a winding of the close-proximity communication coil.

6. A communication terminal comprising:

a close-proximity communication coil configured to be used in a close-proximity communication system;

a power transmission coil configured to be used in a contactless power transmission system; and

a metal plate; wherein

at least a portion of the metal plate is disposed between the close-proximity communication coil and the power transmission coil when viewed from a direction perpendicular or substantially perpendicular to a main surface of the metal plate;

the close-proximity communication coil and the power transmission coil are disposed in non-overlapping locations when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate;

the power transmission coil is electromagnetically coupled with the metal plate;

a portion of the power transmission coil overlaps with the metal plate when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate;

the metal plate includes a second slit portion; and

a coil opening portion of the power transmission coil overlaps with the second slit portion when viewed from a direction perpendicular to the main surface of the metal plate.

7. The communication terminal according to claim 6 , wherein the close-proximity communication coil and the power transmission coil are spaced from each other by no less than a coil radius of the close-proximity communication coil and no less than a coil radius of the power transmission coil, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

8. The communication terminal according to claim 6 , wherein the close-proximity communication coil and the power transmission coil are disposed in locations facing each other with a central portion of the metal plate located therebetween, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

9. The communication terminal according to claim 6 , wherein

a portion of the close-proximity communication coil overlaps with the metal plate when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate; and

the close-proximity communication coil is electromagnetically coupled with the metal plate.

10. The communication terminal according to claim 6 , wherein the communication terminal is a smartphone.

11. A communication terminal comprising:

a close-proximity communication coil configured to be used in a close-proximity communication system;

a power transmission coil configured to be used in a contactless power transmission system; and

a metal plate; wherein

at least a portion of the metal plate is disposed between the close-proximity communication coil and the power transmission coil when viewed from a direction perpendicular or substantially perpendicular to a main surface of the metal plate;

the close-proximity communication coil and the power transmission coil are disposed in non-overlapping locations when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate;

the close-proximity communication coil is electromagnetically coupled with the metal plate;

the metal plate includes a loop portion; and

the loop portion configures the power transmission coil.

12. The communication terminal according to claim 11 , wherein the close-proximity communication coil and the power transmission coil are spaced from each other by no less than a coil radius of the close-proximity communication coil and no less than a coil radius of the power transmission coil, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

13. The communication terminal according to claim 11 , wherein the close-proximity communication coil and the power transmission coil are disposed in locations facing each other with a central portion of the metal plate located therebetween, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

14. The communication terminal according to claim 11 , wherein the communication terminal is a smartphone.

15. The communication terminal according to claim 11 , further comprising a camera located at a center or approximate center of a winding of the close-proximity communication coil.

16. A communication terminal comprising:

a close-proximity communication coil configured to be used in a close-proximity communication system;

a power transmission coil configured to be used in a contactless power transmission system;

a metal plate; and

a housing that is partially configured of the metal plate; wherein

at least a portion of the metal plate is disposed between the close-proximity communication coil and the power transmission coil when viewed from a direction perpendicular or substantially perpendicular to a main surface of the metal plate;

the close-proximity communication coil and the power transmission coil are disposed in non-overlapping locations when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate; and

at least one of the close-proximity communication coil and the power transmission coil is electromagnetically coupled with the metal plate.

17. The communication terminal according to claim 16 , wherein the close-proximity communication coil and the power transmission coil are spaced from each other by no less than a coil radius of the close-proximity communication coil and no less than a coil radius of the power transmission coil, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

18. The communication terminal according to claim 16 , wherein the close-proximity communication coil and the power transmission coil are disposed in locations facing each other with a central portion of the metal plate located therebetween, when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate.

19. The communication terminal according to claim 16 , wherein

a portion of the close-proximity communication coil overlaps with the metal plate when viewed from a direction perpendicular or substantially perpendicular to the main surface of the metal plate; and

the close-proximity communication coil is electromagnetically coupled with the metal plate.

20. The communication terminal according to claim 16 , wherein the communication terminal is a smartphone.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 25, 2014
From: KATO, NOBORU; OZAWA, MASAHIRO
To: MURATA MANUFACTURING CO., LTD.
Reel/Frame 034258/0337 →
Priority Claims (1)
JP 2013-080258 · Apr 8, 2013 · national
Continuity (2)
Continuation PCTJP2014052024 · Jan 30, 2014
Related Publication 20150076922A1 · Mar 19, 2015