Antenna module for communication and power transmission

• US 9,859,957 B2
• Filed: 10/24/2013
• Issued: 01/02/2018
• Est. Priority Date: 11/07/2012
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Shinohe, Yusuke, Kondo, Fumitaka
• Primary Examiner(s): Fureman, Jared
• Assistant Examiner(s): Warmflash, Michael
• Application Number:
  US14/062,356
• Publication Number:
  US 20140125141A1
• Time in Patent Office: 1,531 Days
• Field of Search: 307104
• CPC Class Codes: H01Q 1/2266 disposed inside the computer
• 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 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/79 for data transfer in combination with power transfer

Abstract

There is provided an antenna module including a non-contact power transmission coil, and a proximity radio communication antenna formed coaxially with the non-contact power transmission coil.

Claims

1. An antenna module, comprising:

a non-contact power transmission coil; and

a proximity radio communication antenna including a coupler,

wherein the coupler is configured to receive power from a feedline to a plurality of connection points in an identical phase,

wherein the plurality of connection points are arranged on the coupler at a plurality of intersection points of a line with the coupler,

wherein the line passes through a center of the coupler, and

wherein the proximity radio communication antenna is coaxial with the non-contact power transmission coil.

2. The antenna module according to claim 1,

wherein the coupler is further configured to generate electromagnetic field coupling.

3. The antenna module according to claim 1,

wherein the coupler is one of ring-shaped or polygonal-shaped.

4. The antenna module according to claim 1,

wherein the coupler has at least one slit.

5. The antenna module according to claim 1,

wherein the coupler is on one of an outer peripheral side or an inner peripheral side of the non-contact power transmission coil.

6. The antenna module according to claim 1,

wherein the proximity radio communication antenna includes a first proximity radio communication antenna and a second proximity radio communication antenna, and

wherein the non-contact power transmission coil includes a first non-contact power transmission coil and a second non-contact power transmission coil.

7. The antenna module according to claim 6, further comprising

a rotary shaft in an axial center of the non-contact power transmission coil and the proximity radio communication antenna.

8. The antenna module according to claim 7,

wherein the rotary shaft comprises a non-metal that reduces an influence of eddy currents due to an electromagnetic induction by a magnetic field in at least one of the non-contact power transmission coil or the proximity radio communication antenna.

9. The antenna module according to claim 7,

wherein the first proximity radio communication antenna and the first non-contact power transmission coil are in a plane of a first dielectric substrate, and

wherein the second proximity radio communication antenna and the second non-contact power transmission coil are in a plane of a second dielectric substrate.

10. The antenna module according to claim 9,

wherein the plane of the first dielectric substrate faces the plane of the second dielectric substrate.

11. The antenna module according to claim 7,

wherein the first proximity radio communication antenna, the first non-contact power transmission coil, the second proximity radio communication antenna, and the second non-contact power transmission coil are in respective planes of different dielectric substrates.

12. The antenna module according to claim 11, further comprising

a magnetic material sheet between at least one of the first proximity radio communication antenna and the second proximity radio communication antenna, or the first non-contact power transmission coil and the second non-contact power transmission coil.

13. The antenna module according to claim 7,

wherein the first proximity radio communication antenna includes the coupler, wherein the coupler is one of ring shaped or polygonal shaped, and

wherein the second proximity radio communication antenna is non-annular shaped at a position away from the rotary shaft by a radius of the coupler.

14. The antenna module according to claim 1 ,

wherein the feedline is connected to the coupler by at least one columnar conductor.

15. The antenna module according to claim 1 ,

wherein a length of the feedline corresponds to a multiple of one-fourth of a communication frequency wavelength.

16. The antenna module according to claim 15,

wherein a band of proximity radio communication is controlled based on the length of the feedline.