Antenna system

• US 9,819,097 B2
• Filed: 08/26/2015
• Issued: 11/14/2017
• Est. Priority Date: 08/26/2015
• Status: Active Grant

• Current Assignee: NXP B.V. (NXP Semiconductors NV)
• Original Assignee: NXP B.V. (NXP Semiconductors NV)
• Inventors: Kerselaers, Anthony, Gomme, Liesbeth
• Primary Examiner(s): DINH, TRINH VO
• Application Number:
  US14/836,681
• Publication Number:
  US 20170062949A1
• Time in Patent Office: 811 Days
• Field of Search: None
• CPC Class Codes: H01Q 1/273 Adaptation for carrying or wearing by persons or animals
• CPC Class Codes: H01Q 21/0006 Particular feeding systems
• CPC Class Codes: H01Q 7/08 Ferrite rod or like elongated core
• CPC Class Codes: H01Q 9/285 Planar dipole H01Q9/065 takes precedence; patch antenna H01Q9/0407
• CPC Class Codes: H04B 5/263 Multiple coils at either side
• CPC Class Codes: H04B 5/72 for local intradevice communication

Abstract

A near-field electromagnetic induction antenna including: an electric antenna including a plate; a first feeding connection and a second feeding connection; and a magnetic antenna including a first coil and a second coil, wherein the first coil and the second coil are mutually coupled, wherein a first connection of the first coil is connected to the first feeding connection, wherein a second connection of the first coil and a first connection of the second coil is connected to the second feeding connection, and wherein a second connection of the second coil is connected to the plate.

Claims

1. A near-field electromagnetic induction antenna comprising:

an electric dipole antenna including a first plate and a second plate spaced apart from the first plate, wherein the first and second plate form a capacitor;

a first feeding connection and a second feeding connection; and

a magnetic antenna including a first coil and a second coil, wherein the first coil and the second coil are mutually coupled,

wherein a first connection of the first coil and a first plate are connected to the first feeding connection,

wherein a second connection of the first coil and a first connection of the second coil is connected to the second feeding connection, and

wherein a second connection of the second coil is connected to the second plate.

2. The antenna of claim 1, wherein the first coil and the second coil are wrapped around a ferrite core.

3. The antenna of claim 1, wherein the first coil and the second coil are planar coils wherein the second coil is inside the first coil.

4. The antenna of claim 3, wherein the second plate is spaced apart from the first coil and the second coil and is positioned over an opening in the second coil.

5. The antenna of claim 3, wherein the second plate is spaced apart from the first coil and the second coil and is positioned over the first coil.

6. The antenna of claim 3, wherein the first plate surrounds the first coil and the second coil and is positioned substantially coplanar with the first and second coil.

7. A near-field electromagnetic induction antenna comprising:

an electric antenna including a plate;

a first feeding connection and a second feeding connection; and

a magnetic antenna including a first coil and a second coil, wherein the first coil and the second coil are mutually coupled,

wherein a first connection of the first coil is connected to the first feeding connection,

wherein a second connection of the first coil and a first connection of the second coil is connected to the second feeding connection, and

wherein a second connection of the second coil is connected to the plate.

8. The antenna of claim 7, wherein the first coil and the second coil are wrapped around a ferrite core.

9. The antenna of claim 7, wherein the first coil and the second coil are planar coils wherein the second coil is inside the first coil.

10. The antenna of claim 9, wherein the plate is spaced apart from the first coil and the second coil and is positioned over an opening in the second coil.

11. The antenna of claim 9, wherein the plate is spaced apart from the first coil and the second coil and is positioned over the first coil.

12. A near-field electromagnetic induction wireless transceiver comprising:

a near-field electromagnetic induction antenna comprising;

an electric dipole antenna including a first plate and a second plate spaced apart from the first plate, wherein the first and second plate form a capacitor;

a first feeding connection and a second feeding connection; and

a magnetic antenna including a first coil and a second coil, wherein the first coil and the second coil are mutually coupled,

wherein a first connection of the first coil and a first plate are connected to the first feeding connection,

wherein a second connection of the first coil and a first connection of the second coil is connected to the second feeding connection, and

wherein a second connection of the second coil is connected to the second plate;

a signal source configured to produce a first communication signal used to drive the near-field electromagnetic induction antenna to produce generated near-field electromagnetic induction fields; and

a receiver connected to the near-field electromagnetic induction antenna configured to receive a second communication signal using received near-field electromagnetic induction fields,

wherein the transceiver when connected to a body is configured to communicate with another near-field electromagnetic induction wireless transceiver connected to the body.

13. The transceiver of claim 12, wherein the first coil and the second coil are wrapped around a ferrite core.

14. The transceiver of claim 12, wherein the first coil and the second coil are planar coils wherein the second coil is inside the first coil.

15. The transceiver of claim 14, wherein the first plate surrounds the first coil and the second coil and is positioned substantially coplanar with the first and second coil and wherein the second plate is spaced apart from the first coil and the second coil.

16. The transceiver of claim 12, wherein the transceiver is implemented in one of a hearing aid, headphones, or a wearable device.

17. A near-field electromagnetic induction wireless transceiver comprising:

a near-field electromagnetic induction antenna comprising;

an electric antenna including a plate;

a first feeding connection and a second feeding connection; and

a magnetic antenna including a first coil and a second coil, wherein the first coil and the second coil are mutually coupled,

wherein a first connection of the first coil is connected to the first feeding connection,

wherein a second connection of the first coil and a first connection of the second coil is connected to the second feeding connection, and

wherein a second connection of the second coil is connected to the plate;

a signal source configured to produce a first communication signal used to drive the near-field electromagnetic induction antenna to produce generated near-field electromagnetic induction fields; and

a receiver connected to the near-field electromagnetic induction antenna configured to receive a second communication signal using received near-field electromagnetic induction fields,

wherein the transceiver when connected to a body is configured to communicate with another near-field electromagnetic induction wireless transceiver connected to the body.

18. The transceiver of claim 17, wherein the first coil and the second coil are wrapped around a ferrite core.

19. The transceiver of claim 17, wherein the first coil and the second coil are planar coils wherein the second coil is inside the first coil and wherein the plate is spaced apart from the first coil and the second coil.

20. The transceiver of claim 17, wherein the transceiver is implemented in one of a hearing aid, headphones, or a wearable device.