I claim:
1. A cable comprising:
a plurality of twisted pairs arranged in a matrix grid manner defining rows and columns,
the twisted pairs of the same row having the same twist direction;
the twisted pairs of the same column having opposite twist directions arranged staggered with each other;
every adjacent two twisted pairs in directions of either said rows or said columns, or both, having a phase shift angle with each other in a global coordinate system.
2. The cable as described in claim 1, wherein said phase shift angle is 90 degrees.
3. The cable as described in claim 1, wherein every adjacent two twisted pairs in diagonal directions have no phase shift angle with each other in a global coordinate system while having a phase shift angle with each other in a local coordinate system.
4. The cable as described in claim 1, wherein there are two rows and two columns of the twisted pairs.
5. A method of reducing crosstalk of a bunch of twisted pairs of a cable, comprising the steps of:
arranging said twisted pairs arranged in columns and rows thereof;
having the twisted pairs in the same row with the same twist direction;
having the twisted pairs in the adjacent two rows with opposite twist directions; and
having every adjacent two twisted pairs in the same row or the same column with a phase shift angle therebetween in a local coordinate system defined thereof.
6. The method as described in claim 5, wherein said rows and said columns are arranged perpendicular to each other.
7. The method as described in claim 5, further including a step of having every adjacent two twisted pairs in a diagonal direction with a phase shift angle therebetween in another local coordinate system defined thereof.
8. A cable comprising:
a plurality of twisted pairs arranged in a three dimension manner commonly defining a global coordinate system;
every adjacent two twisted pairs defining a local coordinate system wherein a zero angle line is defined by a connection line between two twist centers of said adjacent two twisted pairs; wherein
for said every adjacent two twisted pairs, there is a phase shift angle therebetween in the local coordinate system regardless of whether there is a phase shift angle therebetween in the global coordinate system.
9. The cable as described in claim 8, wherein said twisted pairs are arranged in a matrix type.
10. The cable as described in claim 9, wherein the local coordinate system defined by two diagonally adjacent twisted pairs is not compliant with the global coordinate system.
11. A method of reducing a crosstalk in a bunch of twisted pairs in a cable, comprising steps of:
arranging the twisted pairs in three dimension directions wherein all the twisted pairs extend in a first of said three dimension directions;
having the twisted pairs stacked in second and third of said three dimension directions; wherein
every adjacent two twisted pairs along at least one of said second and third directions have a phase shift angle with each other in the local coordinate system defined between said adjacent twisted pairs.
12. The method as described in claim 11, wherein the twisted pairs arranged in an array along one of said second and third directions, have the same twist direction.
13. The method as described in claim 11, wherein every adjacent two twisted pairs along one of said second and third directions, have opposite twist directions.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A resin composition comprising:
a base resin containing an ethylene-acrylic acid ester copolymer as a main component;
a lubricant dispersed in the base resin, the lubricant containing a metal soap; and
a metal hydroxide in a range from 5 to 60 mass %.
2. An electric wire comprising:
an insulating coating layer containing the resin composition according to claim 1; and
a conductor coated with the insulating coating layer.
3. The electric wire according to claim 2,
wherein a cross-sectional area of the conductor is 3 sq or more, and
a thickness of the insulating coating layer is 0.32 mm or more.
4. The electric wire according to claim 2, further comprising:
a shield layer coating the insulating coating layer; and
a sheath layer coating the shield layer.