Twisted pair cables suitable for extended distance applications
AssigneeSuperior Essex International LP
InventorsChristopher W. McNutt, Amir Sekhavat
Life of this patent
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Abstract
A twisted pair cable suitable for extended length applications exceeding 100 m may include four twisted pairs of individually insulated conductors. Each of the four twisted pairs may have a nominal twist lay of at least 25.0 mm, and a difference between the respective nominal twist lays of any two of the four twisted pairs may be no more than 5.0 mm. Individual twisted pair shield layers may be respectively formed around each of the four twisted pairs, and a jacket may be formed around the four twisted pairs and the four shield layers.
Claims20
A cable, comprising:
- four twisted pairs of individually insulated conductors, each of the four twisted pairs having a nominal twist lay of at least 25.0 mm, wherein a difference between the respective nominal twist lays of any two of the four twisted pairs is no more than 5.0 mm;
- four individual twisted pair shield layers, each of the shield layers formed around a corresponding one of the four twisted pairs and comprising continuous electrically conductive material extending over a longitudinal distance greater than 120 m;
- and
- a jacket formed around the four twisted pairs and the four shield layers,
- wherein the cable has a longitudinal length greater than 120 m.
A cable, comprising:
- four twisted pairs of individually insulated conductors, wherein a difference between the respective nominal twist lays of any two of the four twisted pairs is no more than 5.0 mm;
- four individual twisted pair shield layers, each of the shield layers formed around a corresponding one of the four twisted pairs and comprising continuous electrically conductive material extending over a longitudinal distance greater than 120 m, the electrically conductive material having a thickness of at least 0.0889 mm;
- and
- a jacket formed around the four twisted pairs and the four shield layers,
- wherein the cable has a longitudinal length greater than 120 m.
A cable, comprising:
- four twisted pairs of individually insulated conductors, each twisted pair having a nominal twist lay of at least 25.0 mm;
- four individual twisted pair shield layers, each of the shield layers formed around a corresponding one of the four twisted pairs and comprising continuous electrically conductive material extending over a longitudinal distance greater than 120 m;
- and
- a jacket formed around the four twisted pairs and the four shield layers,
- wherein the cable has a longitudinal length greater than 120 m, and
- wherein a delay skew between any two of the four twisted pairs over the longitudinal length is less than 45 ns over a frequency range between 1.0 MHz and 250 MHz.
Dependencies are inferred from the claim text.