| 摘要 |
PROBLEM TO BE SOLVED: To provide a differential signal transmission cable and a multipair differential signal transmission cable, capable of suppressing the deterioration of transmission characteristics even for the occurrence of coupling between differential and common phases.SOLUTION: The differential signal transmission cable includes two core wires 4 having an insulation layer 3 on the outer periphery of a conductor 2 in parallel arrangement, and an external conductor 5 which collectively covers the two core wires 4. The insulation layer 3 includes an internal skin layer 6 made of non-foam resin, a foam layer 7 made of foam resin, and an external skin layer 8 made of non-foam resin, sequentially disposed on the outer periphery of the conductor 2. The external skin layer 8 has a relative permittivity larger than the relative permittivity of the internal skin layer 6. |
