Multi-pair data cable with configurable core filling and pair separation
View Patent ↗An improved data telecommunications cable according to the invention includes a plurality of twisted pairs of insulated conductors, and a substantially flat configurable dielectric separator disposed between the plurality of twisted pairs of insulated conductors along a longitudinal length of the telecommunications cable. The data communications cable also includes a jacket assembly enclosing the plurality of twisted pairs of insulated conductors and the substantially flat dielectric pair separator. The substantially flat dielectric pair separator separates each twisted pair of insulated conductors from every other twisted pair of insulated conductors with a spacing sufficient to provide a desired crosstalk isolation between each of the plurality of twisted pairs of insulated conductors.
1. A finished communications cable comprising:
a plurality of twisted pairs of insulated conductors comprising a first twisted pair of insulated conductors and a second twisted pair of insulated conductors;
a substantially flat configurable dielectric separator disposed between the plurality of twisted pairs of conductors in the finished communications cable, that separates the first twisted pair of insulated conductors from the second twisted pair of insulated conductors; and
a jacket enclosing the plurality of twisted pairs of insulated conductors and the configurable dielectric separator;
wherein the plurality of twisted pairs of insulated conductors and the substantially flat configurable dielectric separator are twisted about a common axis to form the finished communications cable.
2. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator is arranged to have no more than one concave surface to provide a groove extending along a longitudinal length of the communications cable.
3. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator is arranged within the jacket to provide at least two grooves, at least one twisted pair of insulated conductors being disposed within each of the at least two grooves.
4. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator includes a foamed polymer.
5. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator includes a woven fiberglass tape.
6. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator includes a flame-retardant, low-dielectric constant, foamed polymer tape.
7. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator includes a foamed fluorinated ethylene propylene material.
8. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator is a flame-retardant, foamed polymer tape.
9. The communications cable as claimed in claim 1 , further comprising a central core filling material disposed in a core of the communications cable between the first and second twisted pairs of insulated conductors.
10. The communications cable as claimed in claim 9 , wherein the central core filling is made of a same material as the substantially flat configurable dielectric separator.
11. The communications cable as claimed in claim 1 , further comprising a conductive shield substantially surrounding the plurality of twisted pairs of insulated conductors and the substantially flat configurable dielectric separator.
12. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator is arranged so as to separate each twisted pair of insulated conductors from every other twisted pair of insulated conductors.
13. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator comprises a conductive layer and is arranged so that the conductive layer faces each of the plurality of twisted pairs of insulated conductors.
14. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator comprises an aluminum/mylar tape, an aluminum layer of the aluminum/mylar tape facing the plurality of twisted pairs of insulated conductors.
15. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator is arranged to provide a sufficient spacing between the first twisted pair of insulated conductors and the second twisted pair of insulated conductors so as to provide a desired crosstalk isolation between the first twisted pair of insulated conductors and the second twisted pair of insulated conductors.
16. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator is arranged so as to prevent the first twisted pair from contacting the jacket.
17. The communications cable as claimed in claim 1 , wherein the substantially flat configurable dielectric separator has a concave shape.
18. The communication cable as claimed in claim 17 , wherein the substantially flat configurable dielectric separator does not extend more than 180 around any one of the plurality of twisted pairs of insulated conductors.
19. An unshielded communications cable comprising:
a plurality of twisted pairs of insulated conductors comprising a first twisted pair of insulated conductors and a second twisted pair of insulated conductors;
a substantially flat configurable dielectric separator that consists of non-conductive, dielectric materials disposed between the plurality of twisted pairs of conductors that separates the first twisted pair of insulated conductors from the second twisted pair of insulated conductors; and
a jacket enclosing the plurality of twisted pairs of insulated conductors and the configurable dielectric separator;
wherein the substantially flat configurable dielectric separator includes a foamed polymer.
20. The communications cable as claimed in claim 19 , wherein the substantially flat configurable dielectric separator includes a flame-retardant, low-dielectric constant, foamed polymer tape.
21. The communications cable as claimed in claim 19 , wherein the substantially flat configurable dielectric separator includes a foamed fluorinated ethylene propylene material.
22. The communications cable as claimed in claim 19 , wherein the substantially flat configurable dielectric separator is a flame-retardant, foamed polymer tape.