Electrical cables and optical waveguides are disclosed as including an electrically insulative foam. The electrically insulative foam can coat at least one electrical conductor of the electrical cable. The electrically insulative foam can coat the optical fiber of the waveguide. The electrically insulative foam can also define a waveguide.

Electrical cables and optical waveguides are disclosed as including an electrically insulative foam. The electrically insulative foam can coat at least one electrical conductor of the electrical cable. The electrically insulative foam can coat the optical fiber of the waveguide. The electrically insulative foam can also define a waveguide.

To provide a coaxial cable with a favorable appearance and excellent processability. The above-described problem is solved by a coaxial cable comprising a center conductor (11), an insulator (12) provided on an outer periphery of the center conductor (11), an external conductor (13, 14) provided on an outer periphery of the insulator (12), and an outer coated body (15, 16) covering the external conductor (13, 14). The external conductor (13, 14) is constituted by a lateral winding shield (13) provided with metal fine wires laterally wound on the outer periphery of the insulator (12), and a metal resin tape (14) wound in a layer on the lateral winding shield (13) with a metal layer side being on an inside. The outer coated body (15, 16) is constituted by a resin tape (15) wound on the metal resin tape (14), and an extruded sheath (16) covering the resin tape (15). Given T1 as a thickness of the metal resin tape (14) and T2 as a thickness of the resin tape (15), T2/T1 is within a range from 0.180 to 0.800.

A data cable has a specially arranged and embodied shielding foil. The shielding foil surrounds an insulated conductor and has multiple layers, including a conductive layer and at least one carrier layer on which the conductive layer is applied. The shielding foil is folded and has a fold around which the conductive layer is guided so that the conductive layer forms an upper face and a lower face. The shielding foil is wound around the insulated conductor. The shielding foil has multiple sequential windings that overlap in an overlap region in which the upper face in one of the multiple sequential windings makes contact with the lower face of a following one of the multiple sequential windings so as to form a continuous shielding configuration.

A shielded cable includes signal wires each having a signal conductor covered by an insulator, and a shield conductor comprising a metal foil resin tape spirally and overlappingly wrapped around the two signal wires, wherein an edge portion of the metal foil resin tape is folded back so that the metal foil therein is oriented outward, thereby bringing metal foils, which are arranged on lower and upper sides in the overlapping part of wrapping of the metal foil resin tape, into electrical contact with each other. The shielded cable includes two drain wires provided outside the metal foil resin tape and configured to be in electrical contact with an exposed part of the outwardly folded-back metal foil, which is exposed out of the overlapping part.

Electrical cables and optical waveguides are disclosed as including an electrically insulative foam. The electrically insulative foam can coat at least one electrical conductor of the electrical cable. The electrically insulative foam can coat the optical fiber of the waveguide. The electrically insulative foam can also define a waveguide.

A cable includes at least one inner conductor and an insulation layer surrounding the inner conductor. An outer conductive layer surrounds the insulation layer and center conductor and includes a carbon nanotube substrate having opposing face surfaces and edges. One or more metals are applied as layer(s) to the opposing face surfaces and edges of the carbon nanotube substrate for forming a metallized carbon nanotube substrate. The metallized carbon nanotube substrate is wrapped to surround the insulation layer and center conductor for forming the outer conductive layer. Embodiments of the invention include a braid layer positioned over the outer conductive layer. The braid layer is woven from of plurality of carbon nanotube yarn elements made of a plurality of carbon nanotube filaments. The carbon nanotube filaments include a carbon nanotube core and metal applied as a layer on the carbon nanotube core for forming a metallized carbon nanotube filaments and yarns woven to form the braid layer.

A cable includes at least one inner conductor and an insulation layer surrounding the inner conductor. An outer conductive layer surrounds the insulation layer and center conductor and includes a carbon nanotube substrate having opposing face surfaces and edges. One or more metals are applied as layer(s) to the opposing face surfaces and edges of the carbon nanotube substrate for forming a metallized carbon nanotube substrate. The metallized carbon nanotube substrate is wrapped to surround the insulation layer and center conductor for forming the outer conductive layer. Embodiments of the invention include a braid layer positioned over the outer conductive layer. The braid layer is woven from of plurality of carbon nanotube yarn elements made of a plurality of carbon nanotube filaments. The carbon nanotube filaments include a carbon nanotube core and metal applied as a layer on the carbon nanotube core for forming a metallized carbon nanotube filaments and yarns woven to form the braid layer.

A cable may include an inner conductor and an outer conductor coaxially arranged around the inner conductor. A dielectric strength member may be positioned between the inner and outer conductors. The dielectric strength member may have a thickness between 0.1 mm and 50 mm and a tensile strength of at least 5,000 MPa. Additionally, a jacket may be formed around the outer conductor.

A cable includes: a pair of core wires; an integrally extruded insulating layer covering the pair of core wires; a shielding layer covering the extruded insulating layer; and an outer insulating layer covering the shielding layer; wherein the pair of core wires are arranged longitudinally side by side and touch each other.