The present disclosure provides an electric cable, comprising two signal conductors, a resin insulating layer, an expanded polytetrafluoroethylene insulating film, an electromagnetic shielding film, two ground conductors, and a covering layer. The resin insulating layer covers the two signal conductors. The expanded polytetrafluoroethylene insulating film covers the resin insulating layer. The electromagnetic shielding film covers the expanded polytetrafluoroethylene insulating film. The two ground conductors are disposed at two sides of the electromagnetic shielding film. The cladding layer dads the electromagnetic shielding film and the two ground conductors. Through the expanded polytetrafluoroethylene insulating film, the electric cable can be applied to compact products, and the electric cable can be highly flexible such that the signal transmission performance would not be affected after being repeatedly bent.

A cable includes a jacket surrounding first and second twisted pairs, as well as, first and second dielectric tapes. In alternative or supplemental embodiments of the invention, the first dielectric tape has a cross sectional shape, which presents first and second recessed portions; the first dielectric tape is different in shape or material content as compared to a second dielectric tape; the insulated conductors of the first and second twisted pairs are identical in appearance, while the first and second dielectric tapes are different in appearance; and/or the first dielectric tape has a hollow core possessing a gas or material with a lower dielectric constant.

A cable includes a jacket surrounding first and second twisted pairs, as well as, first and second dielectric tapes. In alternative or supplemental embodiments of the invention, the first dielectric tape has a cross sectional shape, which presents first and second recessed portions; the first dielectric tape is different in shape or material content as compared to a second dielectric tape; the insulated conductors of the first and second twisted pairs are identical in appearance, while the first and second dielectric tapes are different in appearance; and/or the first dielectric tape has a hollow core possessing a gas or material with a lower dielectric constant.

A communication network includes first and second coaxial cables. The first cable transmits forward path, downstream signals to customer devices. The second cable receives reverse path, upstream signals from customer devices. In a preferred embodiment, the downstream bandwidth exceeds 500 MHz and the upstream bandwidth exceeds 500 MHz, such as frequencies of 5 to 550 MHz in both the downstream and upstream directions. A power inserter provides a ground to first and second shielding layers of the first and second cables, a first part of a differential power signal to a center conductor of the first cable and a second part of the differential power signal to a center conductor of the second cable. A tap is also provided for the dual coaxial system, so as to provide access to the signals and/or power of the first and second cables without terminating the first and second cables.

A communication network includes first and second coaxial cables. The first cable transmits forward path, downstream signals to customer devices. The second cable receives reverse path, upstream signals from customer devices. In a preferred embodiment, the downstream bandwidth exceeds 500 MHz and the upstream bandwidth exceeds 500 MHz, such as frequencies of 5 to 550 MHz in both the downstream and upstream directions. A power inserter provides a ground to first and second shielding layers of the first and second cables, a first part of a differential power signal to a center conductor of the first cable and a second part of the differential power signal to a center conductor of the second cable. A tap is also provided for the dual coaxial system, so as to provide access to the signals and/or power of the first and second cables without terminating the first and second cables.

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.

An electromagnetic shielding material includes multiple strands of an electrically conductive yarn that are arranged as a braided, knitted, or woven mesh. Each strand of the electrically conductive yarn comprises one or more electrically conductive filaments; each electrically conductive filament comprises a core of a first electrically conductive material surrounded by a sheath of a second electrically conductive material different from the first electrically conductive material. The first electrically conductive material exceeds the second electrically conductive material with respect to electrical conductivity, while the second electrically conductive material exceeds the first electrically conductive material with respect to one or more of tensile strength, corrosion resistance, or one or more other mechanical or chemical properties or characteristics. In many examples, the first electrically conductive material includes copper and the second electrically conductive material includes stainless steel.

A dielectric isolator for a twisted pair cable includes a body formed as an elongate strip with a top surface, bottom surface, a first side edge and a second side edge. A first slot is formed in the first side edge and extends at least half way toward the center of the isolator. A second slot is formed in the second side edge and extends at least half way toward the center of the isolator. During cable manufacturing, first and second wedges open the first and second slots. First and second twisted pairs are inserted into the first and second opened slots, respectively. Third and fourth twisted pairs reside at the top and bottom surface, respectively.

A cross filler for arrangement within a LAN cable has a plurality of twisted pair conductors. The cross filler has a body and a plurality of radially extending arms from a center point. Each of the arms has a plurality of spaced apart notches cut into the arms, the notches spaced apart along the length of the arms. Each of the notches are dimensioned allowing bending of the LAN cable without physical breakdown of the cross filler.

A shielded cable assembly capable of transmitting signals at speeds of 3.5 Gigabits per second (Gb/s) or higher without modulation or encoding over a single pair of conductors. The cable has a characteristic impedance of 95 Ohms and can support transmission data according to either USB 3.0 or HDMI 1.4 performance specifications. The wire cable includes a pair of conductors, a shield surrounding the conductors, and a dielectric structure configured to maintain a first predetermined spacing between the conductors and a second predetermined spacing between said conductors and said shield. The shield includes an inner shield conductor enclosing the dielectric structure and an outer shield conductor enclosing the inner shield conductor.