Cable Having a Sparse Shield

• US 20140209347A1
• Filed: 01/29/2013
• Published: 07/31/2014
• Est. Priority Date: 01/29/2013
• Status: Abandoned Application

• Current Assignee: Creganna Unlimited Company (TE Connectivity Ltd. (United Kingdom))
• Original Assignee: Tyco Electronics Corporation (TE Connectivity Ltd. (United Kingdom))
• Inventors: Buck, Arthur G., Mayevskiy, Yevgeniy, Khamphilavong, Malai H., Huynh, Thuong A., Sprunger, Paul C.
• Application Number:
  US13/753,358
• Publication Number:
  US 20140209347A1
• Time in Patent Office: Days
• US Class Current: 174/106.R
• CPC Class Codes: H01B 1/02 mainly consisting of metals or alloys
• CPC Class Codes: H01B 11/1813 Co-axial cables with at least one braided conductor
• CPC Class Codes: H01B 11/1821 Co-axial cables with at least one wire-wound conductor
• CPC Class Codes: H01B 11/1895 Particular features or applications
• CPC Class Codes: H01B 11/203 forming a flat arrangement
• CPC Class Codes: H01B 13/0165 of the layers outside the outer conductor
• CPC Class Codes: H01B 13/22 Sheathing; Armouring; Screening; Applying other protective layers H01B13/32 takes precedence
• CPC Class Codes: H01B 7/00 Insulated conductors or cables characterised by their form
• CPC Class Codes: H01B 7/0216 Two layers
• CPC Class Codes: H01B 7/041 attached to mobile objects, e.g. portable tools, elevators, mining equipment, hoisting cables
• CPC Class Codes: H01B 7/0892 incorporated in a cable of non-flat configuration
• CPC Class Codes: Y10T 29/49124 On flat or curved insulated base, e.g., printed circuit, etc.

Abstract

A cable includes a center conductor. An insulating layer surrounds the center conductor. A sparse shield partially surrounds the insulating layer. An insulating jacket covers the sparse shield and the remainder of the cable.

Claims

1. A cable comprising:

a center conductor;

an insulating material that surrounds the center conductor;

a sparse shield that partially surrounds the insulating material; and

an insulator that covers the sparse shield.

2. The cable according to claim 1, wherein the sparse shield has a DC resistance that substantially matches the DC resistance of the center conductor.

3. The cable according to claim 2, wherein the sparse shield has resistance of about 1.64 ohm/m (0.5 ohm/foot).

4. The cable according to claim 1, wherein the sparse shield comprises five or fewer conductors with a gauge of greater than about 48 AWG.

5. The cable according to claim 3, wherein each conductor of the sparse shield is separated from an adjacent conductor of the sparse shield by a distance.

6. The cable according to claim 1, wherein the sparse shield covers less than about 20 percent of a surface area of the outside surface of the insulating material.

7. The cable according to claim 1, further comprising a conductive coating formed on an outside surface of the insulating material, such that the conductive coating is between the outside surface of the insulating material and the sparse shield.

8. The cable according to claim 7, wherein the conductive coating is a coating selected from the group of coatings consisting of:

carbon, graphite, graphene, silver, copper, and said materials in a suspended solution.

9. The cable according to claim 1, wherein a thickness of the insulating material surrounding the center conductor is about 0.025 to 0.64 mm (0.001 to 0.025 inch).

10. The cable according to claim 1, wherein the center conductor has a gauge between about 52 AWG to 36 AWG.

11. A cable assembly comprising:

a plurality of cables, each having a first end, an intermediate section, and a second end, wherein the intermediate sections of respective cables of the plurality of cables are detached from each other; and

a conductive shield surrounding the respective intermediate sections of the plurality of wires;

wherein each cable of the plurality of wires includes;

a center conductor;

an insulating material that surrounds the center conductor;

a sparse shield that partially surrounds the insulating layer; and

an insulator to cover the sparse shield.

12. The cable assembly according to claim 11, wherein the sparse shield has a resistance that substantially matches a resistance of the center conductor.

13. The cable assembly according to claim 12, wherein the sparse shield has a resistance of about 1.64 ohm/m (0.5 ohm/ft).

14. The cable assembly according to claim 11, wherein the sparse shield comprises five or fewer conductors with a gauge of greater than about 42 AWG, wherein each conductor of the sparse shield is separated from an adjacent conductor by a distance.

15. The cable assembly according to claim 11, wherein the sparse shield covers less than about 20 percent of a surface area of the outside surface of the insulating material.

16. The cable assembly according to claim 15, wherein each cable further comprises a conductive coating formed on an outside surface of the insulating material, such that the conductive coating is between the outside surface of the insulating material and the sparse shield.

17. The cable assembly according to claim 16, wherein the conductive coating is a coating selected from the group of coatings consisting of:

carbon, graphite, graphene, silver, copper, and said materials in a suspended solution.

18. A method for manufacturing a cable comprising:

providing a center conductor;

using an insulating material to form an insulating layer around the center conductor;

no more than partially surrounding the insulating layer with a sparse shield; and

providing an insulator to cover the sparse shield.

19. The method according to claim 18, wherein the sparse shield has a DC resistance that substantially matches the DC resistance of the center conductor.

20. The method according to claim 18, further comprising forming a conductive coating on an outside surface of the insulating layer, such that the conductive coating is between the outside surface of the insulating layer and the sparse shield.