Signal transmission cable
A signal transmission cable includes at least one internal conductor, an insulator, and an external conductor. The at least one internal conductor is formed in an elongated shape and is configured to transmit a signal. The insulator covers the internal conductor. The external conductor is a band-shaped resin tape having characteristics of an elongation percentage of equal to or more than 30% and a volume resistivity of equal to or less than 4×10 −4 Ω·cm. The external conductor is configured to be wound around the insulator.
1. A signal transmission cable comprising:
at least one internal conductor that is formed in an elongated shape for transmitting a signal;
an insulator that covers the internal conductor; and
an external conductor in which a band-shaped resin tape having characteristics of an elongation percentage of equal to or more than 300% and a volume resistivity of equal to or less than 4×10 −4 Ω·cm is wound around the insulator,
wherein the external conductor comprises a lap part in which widthwise ends of the resin tape overlap each other and a non-conductive layer is not disposed, and
wherein the resin tape comprises an acrylic elastomer resin.
2. The signal transmission cable according to claim 1 , wherein the resin tape has an elastic modulus of equal to or less than 2800 MPa.
3. The signal transmission cable according to claim 1 , wherein the resin tape has a thickness of equal to or more than 100 μm and equal to or less than 1 mm.
4. The signal transmission cable according to claim 1 , wherein the resin tape includes a resin having an elongation percentage equal to or more than an elongation percentage of polyester, and a filler having conductivity added to the resin.
5. The signal transmission cable according to claim 1 further comprising a braided wire that covers the external conductor.
6. The signal transmission cable according to claim 1 , wherein the resin tape comprises the acrylic elastomer resin to which a metallic filler containing silver is added.