Combined charger connector, charger cable decoration, and spurious emission common-mode filtering coil

• US 9,991,646 B2
• Filed: 05/22/2014
• Issued: 06/05/2018
• Est. Priority Date: 05/22/2014
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Luukkainen, Marko, Knuuttila, Tero, Saunamki, Esa
• Primary Examiner(s): Kaplan, Hal
• Assistant Examiner(s): Ly, Xuan
• Application Number:
  US14/285,491
• Publication Number:
  US 20150340902A1
• Time in Patent Office: 1,475 Days
• Field of Search: 307104
• CPC Class Codes: H01F 17/02 without magnetic core
• CPC Class Codes: H01R 13/6633 with inductive component, e.g. transformer
• CPC Class Codes: H01R 13/719 specially adapted for high frequency, e.g. with filters
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters

Abstract

Methods and apparatus, including computer program products, are provided for a filtering coil. In some example embodiments, there may be provided an apparatus. The apparatus may include a connector mated to enable coupling to a user equipment; and an air-core inductive coil coupled to the connector, wherein the air-core inductive coil includes at least one coil configured to attenuate a radio frequency signal emanating from the user equipment and pass at least direct current power signal to the connector.

Claims

1. An apparatus comprising:

a connector mated to enable coupling to a user equipment; and

an air-core inductive coil coupled to the connector via a wire, wherein the air-core inductive coil includes at least one coil configured to attenuate a wireless radio frequency signal emanating from the user equipment and being carried by the connector via the wire to the air-core inductor, wherein the wireless radio frequency signal represents a radio frequency signal wirelessly transmitted by the user equipment via an antenna, and wherein the air-core inductive coil is further configured to pass at least direct current power signal for charging the user equipment.

2. The apparatus of claim 1, wherein the air-core inductive coil further comprises a structure carrying the at least one coil.

3. The apparatus of claim 2, wherein the structure is detachably coupled to at least one cable, wherein the cable is coupled to the connector and the air-core inductive coil including the at least one coil.

4. The apparatus of claim 2, wherein the structure includes a hollow, center region.

5. The apparatus of claim 1, wherein the coil is placed in a location relative to the user equipment to provide an antenna portion to the user equipment.

6. The apparatus of claim 5, wherein the placed coil provides a tunable antenna including the antenna portion.

7. The apparatus of claim 1, wherein the wireless radio frequency signal emanating from the user equipment includes at least a first signal representative of a signal transmitted by the user equipment and a second signal representative of a higher harmonic of the first signal, and wherein the at least one coil is configured to attenuate the higher harmonic of the first signal.

8. The apparatus of claim 1 further comprising:

an alternating current to direct current converter coupled to the air-core inductive coil and the connector, wherein the alternating current to direct current converter provides at least the direct current power signal to the connector.

9. The apparatus of claim 8, wherein the air-core inductive coil is located between the connector and the alternating current to direct current converter.

10. The apparatus of claim 8, wherein the alternating current to direct current converter contains the air-core inductive coil.

11. The apparatus of claim 1, wherein the connector contains the air-core inductive coil.

12. The apparatus of claim 1, wherein the connector comprises at least one of a universal serial bus connector or a micro universal serial bus connector.

13. A method comprising:

receiving, at a connector coupled via a wire to an air-core inductive coil, a wireless radio frequency signal received from a user equipment,

wherein the air-core inductive coil includes at least one coil configured to attenuate the wireless radio frequency signal emanating from the user equipment and being carried by the connector via the wire to the air-core inductor, wherein the wireless radio frequency signal represents a radio frequency signal wirelessly transmitted by the user equipment via an antenna, and wherein the air-core inductive coil is further configured to and pass at least direct current power signal for charging the user equipment.

14. The method of claim 13, wherein the air-core inductive coil further comprises a structure carrying the at least one coil.

15. The method of claim 14, wherein the structure is detachably coupled to at least one cable, wherein the cable is coupled to the connector and the air-core inductive coil including the at least one coil.

16. The method of claim 14, wherein the structure includes a hollow, center region.

17. The method of claim 13, wherein the coil is placed in a location relative to the user equipment to provide an antenna portion to the user equipment.

18. The method of claim 17, wherein the placed coil provides a tunable antenna including the antenna portion.

19. The method of claim 13, wherein the wireless radio frequency signal emanating from the user equipment includes at least a first signal representative of a signal transmitted by the user equipment and a second signal representative of a higher harmonic of the first signal, and wherein the at least one coil is configured to attenuate the higher harmonic of the first signal.

20. The method of claim 13 further comprising:

receiving, at an alternating current to direct current converter coupled to the air-core inductive coil and the connector, at least the direct current power signal to the connector.

21. The method of claim 20, wherein the air-core inductive coil is located between the connector and the alternating current to direct current converter.

22. The method of claim 20, wherein the alternating current to direct current converter contains the air-core inductive coil.

23. The method of claim 13, wherein the connector contains the air-core inductive coil.

24. The method of claim 13, wherein the connector comprises at least one of a universal serial bus connector or a micro universal serial bus connector.

25. A non-transitory computer readable storage medium including computer program code which when executed by at least one processor causes operations comprising:

receiving, at a connector coupled via a wire to an air-core inductive coil, a wireless radio frequency signal received from a user equipment,

wherein the air-core inductive coil includes at least one coil configured to attenuate the wireless radio frequency signal emanating from the user equipment and being carried by the connector via the wire to the air-core inductor, wherein the wireless radio frequency signal represents a radio frequency signal wirelessly transmitted by the user equipment via an antenna, and wherein the air-core inductive coil is further configured to and pass at least direct current power signal for charging the user equipment.