A communication harness is used for mutual data transmission by differential transmission between at least two electronic devices. The communication harness includes a cable, a first signal line, a second signal line, and a first ground line. The first signal line is surrounded by the cable and transmits a first signal for differential transmission. The second signal line is surrounded by the cable and transmits a second signal for differential transmission. The first ground line is surrounded by the cable. A supply voltage is superposed on the first signal line.

A communication harness is used for mutual data transmission by differential transmission between at least two electronic devices. The communication harness includes a cable, a first signal line, a second signal line, and a first ground line. The first signal line is surrounded by the cable and transmits a first signal for differential transmission. The second signal line is surrounded by the cable and transmits a second signal for differential transmission. The first ground line is surrounded by the cable. A supply voltage is superposed on the first signal line.

A data cable compatible with twisted-pair standards and equipment uses separate coaxial wires with unique dielectric properties to transmit each of the signals and provide lower latency, greater bandwidth, and lower loss. This design addresses the latency issues that limit the physical size of supercomputers and can be significant for high-performance computing projects, cryptocurrency mining, high-frequency trading, and other time-sensitive applications via the use of a dielectric with a low refractive index and physical design that meets specifications for ethernet cables. The design provides for flexibility in overall shielding and the connections of shields for individual elements to address the likelihood of electromagnetic interference in an environment. The dimensions and choice of dielectric can be modified to provide higher velocity factors and/or greater bandwidth.

A data cable compatible with twisted-pair standards and equipment uses separate coaxial wires with unique dielectric properties to transmit each of the signals and provide lower latency, greater bandwidth, and lower loss. This design addresses the latency issues that limit the physical size of supercomputers and can be significant for high-performance computing projects, cryptocurrency mining, high-frequency trading, and other time-sensitive applications via the use of a dielectric with a low refractive index and physical design that meets specifications for ethernet cables. The design provides for flexibility in overall shielding and the connections of shields for individual elements to address the likelihood of electromagnetic interference in an environment. The dimensions and choice of dielectric can be modified to provide higher velocity factors and/or greater bandwidth.

Described herein are quick-connect twisted pair cables, cable systems and methods of installing/connecting them. For example, a quick-connect twisted pair cable may include a plurality of pairs of insulated wires within an outer insulating cover; within the insulating cover each of the plurality of pairs of insulated wires are wrapped around each other within elongate tubular body regions, and unwrapped (e.g., parallel) in flattened regions between the elongate tubular body regions. A quick plug connector may be configured as a standard (e.g., RJ-45) connector type.

A signal and power cable is provided with a plurality of twisted pair conductor elements, at least one of which is configured for power transmission and at least one of which is configured for signal transmission. At least one cable filler element is configured to at least partially separate one of the plurality of twisted pairs from another, the at least one cable filler element having at least one hollow opening. At least one optical fiber, the at least on optical fiber positioned within the at least one hollow opening of the at least one cable filler element.

A signal and power cable is provided with a plurality of twisted pair conductor elements, at least one of which is configured for power transmission and at least one of which is configured for signal transmission. At least one cable filler element is configured to at least partially separate one of the plurality of twisted pairs from another, the at least one cable filler element having at least one hollow opening. At least one optical fiber, the at least on optical fiber positioned within the at least one hollow opening of the at least one cable filler element.

A circuit board assembly has a circuit board and a high-speed cable. The high-speed cable has two signal lines, a ground conductor, an impedance-reducing conductor, and a covering material. The signal lines, the ground conductor, and the impedance-reducing conductor are mounted through the entire high-speed cable. The covering material wraps the signal lines, the ground conductor, and the impedance-reducing conductor, and has a conductive layer and an isolation layer as an inner layer and an outer layer respectively. The conductive layer has multiple loops electrically connected to the ground conductor and the impedance-reducing conductor. Thus, the impedance in the covering material, the ground conductor, and the impedance-reducing conductor is decreased, which prevents from attenuating the signal intensity during transmission at high frequency.

A communication cable that includes a twisted wire pair that includes a pair of insulated wires that are twisted together and that each include a conductor and an insulating covering that covers an outer periphery of the conductor; and a sheath that is made of an insulating material and continuously covers an entire outer periphery of the twisted wire pair about a center along a longitudinal axis of the twisted wire pair, wherein the sheath has a dielectric loss tangent of 0.0001 or more in a frequency range of 1 to 50 MHz.

A communication cable that includes a twisted wire pair that includes a pair of insulated wires that are twisted together and that each include a conductor and an insulating covering that covers an outer periphery of the conductor; and a sheath that is made of an insulating material and continuously covers an entire outer periphery of the twisted wire pair about a center along a longitudinal axis of the twisted wire pair, wherein the sheath has a dielectric loss tangent of 0.0001 or more in a frequency range of 1 to 50 MHz.