A shielded electrical ribbon cable includes a plurality of conductor sets. Each conductor set is surrounded by a shield and includes two insulated conductors. First and second non-conductive polymeric layers are disposed on opposite sides of the cable. The polymeric layers include cover portions and pinched portions. The cover portions surround the plurality of conductor sets, and the pinched portions form pinched portions on each side of the cable. The cable includes a transition portion on each side of the cable. At least one of the polymeric layers has a radius of curvature of at least 50 microns across an entire width of the cable. For at least one of the polymeric layers, the ratio of the minimum radius of curvature in the cover portions to the minimum radius of curvature in the transition portions is from 2 to 15.

A wire bundle includes insulated wires. The insulated wires each includes a conductor core covered with an insulator and is quad-twisted to form the wire bundle. The wire bundle has an annular shape including an inner perimeter and an outer perimeter in a cross section perpendicular to an axis line of the wire bundle. A shape of the outer perimeter is a square or a quasi-square. The quasi-square is a shape formed by curving at least one side of a square to a radial inside direction of the annular shape in the cross section. The insulated wires each has, in the cross section, a shape connecting a plurality of vertexes including two adjacent vertexes of the square or the quasi-square and two vertexes present on the inner perimeter.

A shielded electrical ribbon cable includes a plurality of conductor sets. Each conductor set is surrounded by a shield and includes two insulated conductors. First and second non-conductive polymeric layers are disposed on opposite sides of the cable. The polymeric layers include cover portions and pinched portions. The cover portions surround the plurality of conductor sets, and the pinched portions form pinched portions on each side of the cable. The cable includes a transition portion on each side of the cable. At least one of the polymeric layers has a radius of curvature of at least 50 microns across an entire width of the cable. For at least one of the polymeric layers, the ratio of the minimum radius of curvature in the cover portions to the minimum radius of curvature in the transition portions is from 2 to 15.

A shielded electrical ribbon cable includes adjacent first and second longitudinal conductor sets where each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of each conductor set. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is 1, the center-to-center spacing of the insulated conductors of the second conductor set is 2, and 1/2 is greater than 0.7.

A shielded electrical ribbon cable includes adjacent first and second longitudinal conductor sets where each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of each conductor set. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is 1, the center-to-center spacing of the insulated conductors of the second conductor set is 2, and 1/2 is greater than 0.7.

A shielded electrical ribbon cable includes adjacent first and second longitudinal conductor sets where each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of each conductor set. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is 1, the center-to-center spacing of the insulated conductors of the second conductor set is 2, and 1/2 is greater than 0.7.

A shielded cable includes adjacent first and second conductor sets. Each conductor set includes two or more insulated conductors. The first conductor set also includes a ground conductor that generally lies in the plane of the insulated conductors of the first conductor set. At least 90% of the periphery of each conductor set is encompassed by a shielding film. First and second non-conductive polymeric films are disposed on opposite sides of the cable and form cover portions substantially surrounding each conductor set, and pinched portions on each side of the cable. When the cable is laid flat, the distance between the center of the ground conductor of the first conductor set and the center of the nearest insulated conductor of the second conductor set is 1, the center-to-center spacing of the insulated conductors of the second conductor set is 2, and 1/2 is greater than 0.7.

A wire bundle includes insulated wires. The insulated wires each includes a conductor core covered with an insulator and is quad-twisted to form the wire bundle. The wire bundle has an annular shape including an inner perimeter and an outer perimeter in a cross section perpendicular to an axis line of the wire bundle. A shape of the outer perimeter is a square or a quasi-square. The quasi-square is a shape formed by curving at least one side of a square to a radial inside direction of the annular shape in the cross section. The insulated wires each has, in the cross section, a shape connecting a plurality of vertexes including two adjacent vertexes of the square or the quasi-square and two vertexes present on the inner perimeter.

A shielded cable includes a plurality of conductor sets. Each conductor set is substantially surrounded by a shield and includes two insulated conductors. The plurality of conductor sets includes adjacent first and second conductor sets. First and second non-conductive polymeric layers are disposed on opposite sides of the cable and include cover portions and pinched portions. The cover portions in combination substantially surround the plurality of conductor sets. The pinched portions in combination form pinched portions on each side of the cable. A first conductor of the first conductor set is nearest the second conductor set, and a second conductor of the second conductor set is nearest the first conductor set. The first and second conductors have a spacing S and respective outer dimensions D1 and D2. S/Dmin is from 1.7 to 2. Dmin is the lesser of D1 and D2.

An arrangement of at least two adjacently extending cables, of which a first cable and a second cable which each have at least one stranding group that has two or more conductors stranded to each other and which each have a common cable sheath surrounding the stranding group, a spacer being provided outside on at least one of the cable sheaths for increasing a minimum distance (A) between the stranding groups of the two cables.