A shielded electrical cable includes conductor sets extending along a length of the cable and spaced apart from each other along a width of the cable. First and second shielding films are disposed on opposite sides of the cable and include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the films in combination substantially surround each conductor set. An adhesive layer bonds the shielding films together in the pinched portions of the cable. A transverse bending of the cable at a cable location of no more than 180 degrees over an inner radius of at most 2 mm causes a cable impedance of the selected insulated conductor proximate the cable location to vary by no more than 2 percent from an initial cable impedance measured at the cable location in an unbent configuration.

There is disclosed an illuminated cable comb including a body incorporating at least two openings for removably retaining a corresponding at least two cables in a fixed position relative to the body. The comb further includes a light source within the body, and conductive material within the body capable of transmitting power to the at least one light such that the at least one light illuminates the body when power is supplied.

A shielded electrical cable includes one or more conductor sets extending along a length of the cable and being spaced apart from each other along a width of the cable. Each conductor set has one or more conductors having a size no greater than 24 AWG and each conductor set has an insertion loss of less than about ?20 dB/meter over a frequency range of 0 to 20 GHz. First and second shielding films are disposed on opposite sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor.

Ribbon cables including a plurality of spaced apart substantially parallel conductors extending along a length of the cable and arranged along a width of the cable, and first and second insulative layers disposed on opposite sides of and substantially coextensive with the plurality of conductors along the length and width of the cable are described. Each insulative layer may be adhered to the conductors and may include alternating substantially parallel thicker and thinner portions extending along the length of the cable. The thicker portions of the first and second insulative layers are substantially aligned in one to one correspondence. Each corresponding thicker portion of the first and second insulative layers have at least one conductor in the plurality of conductors disposed therebetween. The thicker portions may have an effective dielectric constant less than 2.

A wireline system includes a control system, a downhole tool, and a wireline cable coupling the downhole tool and the control system. The wireline cable includes a plurality of conductors, which includes a core conductor and a concentric conductor disposed around the core conductor, wherein two of the plurality of conductors form a conductor pair, and wherein each of the plurality of conductors is configured to transmit power, data, or both, between the control system and the downhole tool. The wireline cable further includes one or more insulative layers, wherein at least one insulative layer is disposed between any two conductors.

A wireline system includes a control system, a downhole tool, and a wireline cable coupling the downhole tool and the control system. The wireline cable includes a plurality of conductors, which includes a core conductor and a concentric conductor disposed around the core conductor, wherein two of the plurality of conductors form a conductor pair, and wherein each of the plurality of conductors is configured to transmit power, data, or both, between the control system and the downhole tool. The wireline cable further includes one or more insulative layers, wherein at least one insulative layer is disposed between any two conductors.

A differential signal cable assembly includes a connector to be connected to a communication device, a first multi-pair cable that is connected to the connector at one end and includes a plurality of first differential signal cables for transmitting differential signals, a second multi-pair cable that includes a plurality of second differential signal cables having a larger conductor diameter than the first differential signal cables, and a connection that is connected to an other end of the first multi-pair cable and one end of the second multi-pair cable such that each of the first differential signal cables is electrically connected to a corresponding one of the second differential signal cables.

A differential signal cable assembly includes a connector to be connected to a communication device, a first multi-pair cable that is connected to the connector at one end and includes a plurality of first differential signal cables for transmitting differential signals, a second multi-pair cable that includes a plurality of second differential signal cables having a larger conductor diameter than the first differential signal cables, and a connection that is connected to an other end of the first multi-pair cable and one end of the second multi-pair cable such that each of the first differential signal cables is electrically connected to a corresponding one of the second differential signal cables.

A multicoaxial cable includes a core wire which includes a first unit formed by twisting two first insulated electric wires, each of the first insulated electric wires including a conductor and an insulating layer, the conductor being formed by stranding a plurality of child stranded conductors, each of the child stranded conductors being formed by stranding a plurality of conductor wires, and the insulating layer being formed to cover the conductor, and a sheath which covers the core wire. In the multicoaxial cable, a cross-sectional area of the conductor is 1.2 mm.sup.2 to 3.5 mm.sup.2, the conductor is formed of a hard-drawn copper wire, and an outer diameter of the insulating layer is 2.0 mm to 3.6 mm.

A multicoaxial cable includes a core wire which includes a first unit formed by twisting two first insulated electric wires, each of the first insulated electric wires including a conductor and an insulating layer, the conductor being formed by stranding a plurality of child stranded conductors, each of the child stranded conductors being formed by stranding a plurality of conductor wires, and the insulating layer being formed to cover the conductor, and a sheath which covers the core wire. In the multicoaxial cable, a cross-sectional area of the conductor is 1.2 mm.sup.2 to 3.5 mm.sup.2, the conductor is formed of a hard-drawn copper wire, and an outer diameter of the insulating layer is 2.0 mm to 3.6 mm.