A communications cable includes a pair of twisted pair of wires, each coated with a fluoropolymer insulator. The fluoropolymer insulators each independently contain at least 95% w/w fluorinated ethylene propylene (FEP). The twisted pair of wires is configured to carry a differential signal, such as a differential data signal and/or a differential power signal.

Shields, wire connectors, crimping devices, and wire managers. At least some of the shields are used with a cable that includes a jacket surrounding wire pairs, and a different pair shield surrounding each wire pair. Such shields include a compressible member positioned adjacent end portions of a portion of the wire pairs. The compressible member presses a conductive member against the pair shield surrounding each wire pair in the portion of wire pairs. At least some of the wire connectors include a conductive body positionable alongside a selected wire having a connector surrounded circumferentially by an insulating jacket. The body includes a receptacle with a tapered opening defined between first and second edge portions of the body. As a portion of the selected wire passes through the opening into the receptacle, the first and second edge portions cut through the insulating jacket to contact the conductor.

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.

Two electromagnetic interference (EMI) controlling tape application methodologies for unshielded twisted pair (UTP) cable include Fixed Tape Control (FTC) and Oscillating Tape Control (OTC). In FTC, tape application angle and edge placement are controlled to maintain position of the tape edges over a base of nonconductive filler in the cable. In OTC, the tape application angle is continuously varied, resulting in crossing of the tape edges over all of the pairs of conductors with varying periodicity. In both implementations, the filler allows a cylindrical shape.

Two electromagnetic interference (EMI) controlling tape application methodologies for unshielded twisted pair (UTP) cable include Fixed Tape Control (FTC) and Oscillating Tape Control (OTC). In FTC, tape application angle and edge placement are controlled to maintain position of the tape edges over a base of nonconductive filler in the cable. In OTC, the tape application angle is continuously varied, resulting in crossing of the tape edges over all of the pairs of conductors with varying periodicity. In both implementations, the filler allows a cylindrical shape.

A communication cable has a plurality of twisted pair communication elements, a jacket surrounding the twisted pairs and a shield element disposed between the pairs and the jacket. The shield element is constructed as a tape substrate with a plurality of foil shielding elements disposed thereon, the foil shielding elements are formed as at least two longitudinally running strips separated by a horizontal gap. Each of the two longitudinally running strips are further separated periodically with vertical gaps disposed at varied locations with respect to the adjacent longitudinally running strip.

A shielded electrical cable includes a plurality of conductor sets. Each conductor set includes two insulated conductors. One of the conductor sets also includes a drain wire that generally lies in the plane of the two insulated conductors of the one conductor set. The conductor of each insulated conductor has a size that is not greater than 24 AWG. Each conductor set is substantially surrounded by a shield. The cable also includes first and second non-conductive polymeric layers disposed on opposite sides of the cable. The polymeric layers include cover portions and pinched portions arranged such that, in transverse cross section, the cover portions, in combination, substantially surround the plurality of the conductor sets, and the pinched portions, in combination, form pinched portions of the cable on each side of the plurality of the conductor sets. When the cable is laid flat, the distance between the center of the drain wire of the one conductor set and the center of the nearest insulated conductor of the closest conductor set is 1, the center-to-center spacing of the insulated conductors of the closest conductor set is 2, and 1/2 is greater than 0.7.

The invention relates to a textile surface for at least partially absorbing electromagnetic waves. The textile surface comprises textile elements, such as threads or fibers, of at least first and second types. The textile elements of the first and second types have electrical-conduction properties. Each textile element of the first type comprises a synthetic-material core coated with a first metal. The textile elements of the second type are made of a second metal. The invention also relates to a textile material comprising at least two textile surfaces, and to a protective device comprising a textile surface or a textile material.

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.

A shielded cable comprising two insulated wire covered with first and second metal clad resin tapes each of which has a laminated metal layer and a resin layer. The first metal clad resin tape covers the circumference of the two insulated wires by open-wrapping and the second metal clad resin tape is spirally wrapped around the circumference of the first metal clad resin tape. The first and second metal clad resin tapes are disposed while the metal layers face each other and, in the portion where the second metal clad resin tape is overlapped by wrapping, the metal layer of the overlapped one second metal clad resin tape and the metal layer of the other second metal clad resin tape are in contact with the first metal clad resin tape. The shielded cable can prevent sharp signal attenuation in a high frequency region and is easy to bend and flexible.