Power distribution system for remote radiohead installations

• US 10,348,073 B2
• Filed: 09/14/2017
• Issued: 07/09/2019
• Est. Priority Date: 09/15/2016
• Status: Active Grant

• Current Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Original Assignee: CommScope Technologies, LLC (CommScope Holding Company, Inc.)
• Inventors: Harwath, Frank A.
• Primary Examiner(s): Mayo, III, William H.
• Assistant Examiner(s): Robinson, Krystal
• Application Number:
  US15/704,316
• Publication Number:
  US 20180076603A1
• Time in Patent Office: 663 Days
• Field of Search: 439709, 174 72 C
• CPC Class Codes: H01B 1/023 Alloys based on aluminium
• CPC Class Codes: H01B 1/026 Alloys based on copper
• CPC Class Codes: H01B 7/361 being the colour of the insulation or conductor
• CPC Class Codes: H01R 4/36 Conductive members located under tip of screw
• CPC Class Codes: H02G 1/005 for cutting cables or wires, or splicing
• CPC Class Codes: H02G 1/14 for joining or terminating cables
• CPC Class Codes: H02G 1/145 Moulds
• CPC Class Codes: H02G 15/113 Boxes split longitudinally in main cable direction
• CPC Class Codes: H02G 15/117 for multiconductor cables
• CPC Class Codes: H02G 3/0437 Channels
• CPC Class Codes: H02G 3/0481 with a circular cross-section H02G3/0468, H02G3/0475 take precedence
• CPC Class Codes: Y10T 29/49195 with end-to-end orienting

Abstract

Aspects of the present disclosure relate to providing cable assemblies for cellular base stations having remote radio head units located atop a radio tower. Each installation requires near-custom cabling, as the electrical resistance of the conductors of the cable assembly varies based on the length of the cable assembly, and because different operators and local governments require different color-coding of the conductors which are coupled to the power trunk. Accordingly, a power distribution system is provided herein wherein conductors of a trunk cable may be coupled to power jumper conductors at transitions. The transitions are generally cylindrical and comprise channels into which splicing lugs are seated. The conductors may be electrically coupled together and secured via set screws. Manufacturing costs may be reduced, as common configurations of trunk cables may be manufactured in higher quantity and coupled to power jumper conductors according to local requirements.

Claims

1. A cable assembly comprising:

a first transition comprising a first body, wherein the first body comprises a first plurality of channels arranged radially about a central axis of the first body, wherein each channel of the first plurality of channels extends in parallel to the central axis of the first body and is partially open in a direction perpendicular to the central axis of the first body;

a second transition comprising a second body, wherein the second body comprises a second plurality of channels arranged radially about a central axis of the second body, wherein each channel of the second plurality of channels extends in parallel to the central axis of the second body and is partially open in a direction perpendicular to the central axis of the second body;

a power trunk comprising a plurality of trunk conductors;

a first power jumper cable comprising a first plurality of power jumper conductors; and

a second power jumper cable comprising a second plurality of power jumper conductors,

wherein each power jumper conductor of the first plurality of power jumper conductors is electrically coupled to a respective one of the plurality of trunk conductors at the first transition and is seated in a respective channel of the first plurality of channels, and wherein each power jumper conductor of the second plurality of power jumper conductors is electrically coupled to a respective one of the plurality of trunk conductors at the second transition and is seated in a respective channels of the second plurality of channels.

2. The cable assembly of claim 1, wherein the first transition comprises a plurality of splicing lugs, and wherein ones of the plurality of splicing lugs are seated in respective ones of the first plurality of channels such that a bottom surface of each splicing lug contacts a surface of the respective channel of the first plurality of channels.

3. The cable assembly of claim 2, wherein each power jumper conductor of the first plurality of power jumper conductors is electrically coupled to the respective trunk conductor of the plurality of trunk conductors via a respective splicing lug of the plurality of splicing lugs.

4. The cable assembly of claim 1, wherein each trunk conductor of the plurality of trunk conductors comprises a color-coded jacket, and wherein each color-coded jacket comprises a color in common with each other color-coded jacket.

5. The cable assembly of claim 1, wherein a first trunk conductor of the plurality of trunk conductors is seated in a respective channel of the first plurality of channels and in a respective channel of the second plurality of channels.

6. The cable assembly of claim 5, wherein the first trunk conductor is electrically coupled to a first one of the first plurality of power jumper conductors and a first one of the second plurality of power jumper conductors.

7. The cable assembly of claim 6, wherein the first trunk conductor is electrically coupled to the first one of the first plurality of power jumper conductors via a first splicing lug at the first transition, and wherein the first trunk conductor is electrically coupled to the first one of the second plurality of power jumper conductors via a second splicing lug at the second transition.

8. The cable assembly of claim 1, wherein a first trunk conductor of the plurality of trunk conductors comprises an aluminum conductor.

9. The cable assembly of claim 8, wherein a first power jumper conductor of the first plurality of power jumper conductors is electrically coupled to the first trunk conductor, and wherein the first power jumper conductor comprises a copper conductor.

10. The cable assembly of claim 1, wherein a first power jumper conductor of the first plurality of power jumper conductors is coupled to a radio frequency (RF) transceiver.

11. The cable assembly of claim 1, wherein a first trunk conductor of the plurality of trunk conductors comprises an conductor having a first wire gauge, wherein a first power jumper conductor of the first plurality of power jumper conductors is electrically coupled to the first trunk conductor, and wherein the first power jumper conductor comprises a second wire gauge different from the first wire gauge.

12. A cable assembly transition, comprising:

a body comprising a plurality of channels arranged radially about a central axis of the body, each channel extending in parallel to the central axis of the body and partially open in a direction perpendicular to the central axis of the body, each channel further comprising a first portion having a substantially flat bottom surface and a second portion having a curved bottom surface; and

a plurality of splicing lugs, each splicing lug dimensioned to seat in the first portion of a respective channel of the plurality of channels such that a bottom surface of the splicing lug contacts the bottom surface of the first portion of the respective channel.

13. The cable assembly transition of claim 12, wherein the body is generally cylindrical.

14. The cable assembly transition of claim 12, wherein the body comprises a distal end and a proximal end, and wherein a first channel is arranged such that the first portion of the first channel is located near the distal end of the body, and wherein a second channel is arranged such that the first portion of the second channel is located near the proximal end of the body.

15. The cable assembly transition of claim 12, further comprising a shoulder interposed between a pair of adjacent channels of the plurality of channels.

16. The cable assembly transition of claim 12, wherein the body comprises a thermoplastic or thermoset material.

17. A cable assembly transition, comprising:

a body comprising a plurality of channels arranged radially about a central axis of the body, each channel extending in parallel to the central axis of the body and comprising first and second sidewalls each having an upper surface, each channel further comprising a first portion having a substantially flat bottom surface and a second portion having a curved bottom surface; and

a plurality of splicing lugs, each splicing lug dimensioned to seat in the first portion of a respective channel of the plurality of channels, wherein an upper surface of the splicing lug is further from the central axis of the body than the upper surfaces of the first and second sidewalls of the respective channel of the plurality of channels.

18. The cable assembly transition of claim 17, wherein the body comprises a distal end and a proximal end, and wherein a first channel is arranged such that the first portion of the first channel is located near the distal end of the body, and wherein a second channel is arranged such that the first portion of the second channel is located near the proximal end of the body.

19. The cable assembly transition of claim 18, wherein a sidewall of a first channel of the plurality of channels and a sidewall of a second channel of the plurality of channels that is adjacent to the first channel define a ribbed shoulder between the first channel and the second channel.