Twin-ax cable

Claim 2

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor, said insulation comprising a foamed polymer; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.

Claim 3

The apparatus of claim 1 wherein said insulation comprises first and second insulating dielectrics surrounding said first and second conductors, respectively.

Claim 4

The apparatus of claim 2 wherein said second dielectric extends substantially parallel with respect to said first dielectric and is in contact with said first dielectric.

Claim 5

The apparatus of claim 3 wherein said dielectrics are constructed of a material which is sufficiently crush resistant to avoid significant changes in insulative properties of said dielectrics upon the application of tensions and forces associated with handling the cable.

Claim 6

The apparatus of claim 1 wherein the foamed polymer is a thermoplastic.

Claim 7

The apparatus of claim 1 wherein the foamed polymer is selected from the group consisting essentially of fluodnated ethylene propylene copolymer, perfluoroalkoxy tetrafluoroethylene copolymer, ethylene tetrafluoroethylene copolymer, polyolefin copolymers, and polyallomer.

Claim 8

The apparatus of claim 1 wherein said conductors are constructed of silver plated copper.

Claim 9

The apparatus of claim 1 wherein each of said conductors comprises a plurality of strands.

Claim 10

The apparatus of claim 1 further comprising an insulating outer jacket surrounding the shield.

Claim 11

The apparatus of claim 1 wherein the strands of the shield are constructed of tin plated copper.

Claim 12

The apparatus of claim 1 wherein the strands of the shield are constructed of silver plated copper.

Claim 13

A differential cable for high speed data transmission, the cable having a length, the cable comprising: a first electrical conductor for transmitting a first electrical signal; a second electrical conductor in substantially parallel relation to the first electrical conductor over the length of the cable, for transmitting a second electrical signal; first and second foamed polymeric insulating dielectrics surrounding said first and second conductors, respectively; a plurality of electrically conductive strands interwoven to form a shield surrounding said first and second dielectrics, the strands being electrically insulated from said conductors; said second electrical signal being 180 degrees out of phase from said first electrical signal, and having a maximum time delay skew of less than 200 pSec/30 meters with respect to said first electrical signal.

Claim 14

A differential cable for high speed data transmission, the cable having a length, the cable comprising: a first electrical conductor for transmitting a first electrical signal; a second electrical conductor in substantially parallel relation to the first electrical conductor over the length of the cable, for transmitting a second electrical signal; first and second foamed polymeric insulating dielectrics surrounding said first and second conductors, respectively; a plurality of electrically conductive strands interwoven to form a shield surrounding said first and second dielectrics, the strands being electrically insulated from said conductors; said second electrical signal being 180 degrees out of phase from said first electrical signal, and having a maximum time delay skew of less than 200 pSec/30 meters with respect to said first electrical signal.

Claim 17

The method of claim 13 which further comprises providing a dielectric comprising a foamed fluorinated ethylene propylene (FEP).

Claim 18

The method of claim 14 which further comprises providing a first and a second insulating dielectrics surrounding said first and second conductors, respectively, and in direct contact with the shield.

Claim 19

The method of claim 15 which further comprises maintaining the two conductors in substantially identical spacial relation between each other and the shield over the length of the cable.

Claim 20

The method of claim 16 further comprising providing an insulating outer jacket surrounding the shield.

Claim 21

The method of claim 13 wherein each of said conductors comprises a plurality of strands.

Claim 22

The method of claim 13 further comprising providing an insulating outer jacket surrounding the shield.

Claim 23

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor; insulation comprising first and second insulating dielectrics surrounding said first and second conductors, respectively, said second dielectric extending substantially parallel with respect to said first dielectric and in contact therewith, said insulation comprising a foamed polymer material which is sufficiently crush resistant to avoid significant changes in the insulative properties of said dielectrics upon the application of tensions and forces associated with handling the cable; a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors expedence low skew between said first and second conductors.

Claim 24

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor; insulation comprising first and second insulating dielectrics surrounding said first and second conductors, respectively, said second dielectric extending substantially parallel with respect to said first dielectric and in contact therewith, said insulation comprising a foamed polymer material which is sufficiently crush resistant to avoid significant changes in the insulative properties of said dielectrics upon the application of tensions and forces associated with handling the cable; a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors expedence low skew between said first and second conductors.

Claim 25

The apparatus of claim 20 wherein the foamed polymer is a thermoplastic.

Claim 26

The apparatus of claim 20 wherein the foamed polymer is selected from the group consisting essentially of fluodnated ethylene propylene copolymer, perfluoroalkoxy tetrafluoroethylene copolymer, ethylene tetrafluoroethylene copolymer, polyolefin copolymers, and polyallomer.

Claim 27

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor, said first and second conductors comprising silver plated copper; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.

Claim 28

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor, said first and second conductors comprising silver plated copper; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.

Claim 29

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor, said first and second conductors comprising a plurality of strands; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.

Claim 30

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor, said first and second conductors comprising a plurality of strands; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.

Claim 31

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, wherein said strands of the shield are constructed of silver plated copper, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.

Claim 32

A high speed data transmission cable having a length comprising: a first electrical conductor; a second electrical conductor, said second conductor extending substantially parallel with respect to said first conductor; insulation disposed at least between said first and second conductors at least electrically insulating said first conductor from said second conductor; and a plurality of electrically conductive strands interwoven to form a shield surrounding said first conductor, said second conductor and said insulation, wherein said strands of the shield are constructed of silver plated copper, said insulation further electrically insulating said strands from said conductors; wherein the cable is constructed of materials and configured to maintain said first and second conductors in substantially parallel relation over the length of the cable; and wherein differential signals transmitted by way of said first and second conductors experience low skew between said first and second conductors.