PROTECTIVE JACKET IN A COAXIAL CABLE

• US 20110132633A1
• Filed: 12/04/2009
• Published: 06/09/2011
• Est. Priority Date: 12/04/2009
• Status: Abandoned Application

• Current Assignee: PPC Broadband Incorporated (Belden Inc.)
• Original Assignee: John Mezzalingua Associates Incorporated
• Inventors: Montena, Noah
• Application Number:
  US12/631,639
• Publication Number:
  US 20110132633A1
• Time in Patent Office: Days
• US Class Current: 174/28
• CPC Class Codes: H01B 11/1869 Construction of the layers on the outer side of the outer conductor
• CPC Class Codes: H01B 11/1878 Special measures in order to improve the flexibility
• CPC Class Codes: Y10T 29/49123 Co-axial cable

Abstract

A protective jacket in a coaxial cable. In one example embodiment, a coaxial cable includes two or more internal components and a jacket surrounding the internal components. The internal components include an electrical conductor configured to propagate a signal and an outer conductor surrounding the electrical conductor. The jacket includes two or more protruding portions and two or more recessed portions. Each recessed portion is positioned between two of the protruding portions. Each of the protruding portions makes contact with the outer conductor and each of the recessed portions does not make contact with the outer conductor. A method for manufacturing a coaxial cable with a protective jacket is also disclosed.

Claims

1. A coaxial cable comprising:

two or more internal components comprising an electrical conductor configured to propagate a signal and an outer conductor surrounding the electrical conductor; and

a jacket surrounding the internal components, the jacket comprising;

two or more protruding portions; and

two or more recessed portions each positioned between two of the protruding portions,

wherein each of the protruding portions makes contact with the outer conductor and each of the recessed portions does not make contact with the outer conductor.

2. The coaxial cable as recited in claim 1, wherein a contact surface area between each protruding portion and the outer conductor is less than or equal to about one-third of a surface area of the outer conductor underneath each recessed portion.

3. The coaxial cable as recited in claim 1, wherein a space between each recessed portion and the outer conductor is filled with a flooding compound.

4. The coaxial cable as recited in claim 3, wherein the flooding compound comprises polybutane, amorphous polypropylene, polyisobtylene, or some combination thereof.

5. The coaxial cable as recited in claim 1, wherein the jacket comprises polyethylene (PE), high-density polyethylene (HDPE), low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), or some combination thereof.

6. A coaxial cable comprising:

a center conductor configured to propagate a signal;

a dielectric surrounding the center conductor;

an outer conductor surrounding the dielectric; and

a jacket surrounding the outer conductor, the jacket comprising;

two or more recessed portions; and

two or more protruding portions each positioned between two of the recessed portions.

7. The coaxial cable as recited in claim 6, wherein the outer conductor comprises:

one or more tape layers; and

one or more braid layers, each braid layer being adjacent to a tape layer.

8. The coaxial cable as recited in claim 7, wherein the protruding portions are helically wrapped along the length of the coaxial cable.

9. The coaxial cable as recited in claim 8, wherein the protruding portions offset a bending bias of the one or more braid layers.

10. The coaxial cable as recited in claim 8, wherein the protruding portions contribute to a bending bias of the one or more braid layers.

11. The coaxial cable as recited in claim 6, wherein the jacket comprises PE, HDPE, LDPE, LLDPE, or some combination thereof.

12. A method for manufacturing a coaxial cable having two or more internal components comprising an electrical conductor configured to propagate a signal and an outer conductor surrounding the electrical conductor, the method comprising the act of:

extruding a jacket so as to surround the internal components, the jacket comprising;

two or more protruding portions; and

two or more recessed portions each positioned between two of the protruding portions,

wherein each of the protruding portions abuts the outer conductor and each of the recessed portions is spaced apart from the outer conductor.

13. The method as recited in claim 12, wherein a contact surface area between each protruding portion and the outer conductor is less than or equal to the surface area of the outer conductor underneath each recessed portion.

14. The method as recited in claim 12, further comprising the act of:

filling the space between each recessed portion and the outer conductor with a flooding compound.

15. The method as recited in claim 14, wherein the flooding compound comprises polybutane, amorphous polypropylene, polyisobtylene, or some combination thereof.

16. The method as recited in claim 12, further comprising the act of:

filling the space between each recessed portion and the outer conductor with a gas.

17. The method as recited in claim 16, wherein the gas comprises helium, neon, argon, krypton, xenon, or some combination thereof.

18. The method as recited in claim 12, wherein the two or more internal components further comprise a dielectric surrounding the center conductor, and the outer conductor comprises a tape layer surrounding the dielectric and a braid layer surrounding the tape layer.

19. The method as recited in claim 18, wherein the protruding portions are helically wrapped along the length of the coaxial cable and offset a bending bias of the braid layer.

20. The method as recited in claim 12, wherein the jacket comprises PE, HDPE, LDPE, LLDPE, or some combination thereof.