A communications cable has coated conductor wires separated by a wire separator to form a twisted pair configured to maintain a distance of approximately 0.45 mm between the conductors and a characteristic impedance of approximately 100 ohms. The coating on the conductors may be an enamel or other appropriately thin insulating material.

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 σ1, the center-to-center spacing of the insulated conductors of the second conductor set is σ2, and σ1/σ2 is greater than 0.7.

The present invention discloses a conductive plastic, based on the total mass of the conductive plastic, which includes: a resin with a low melting point 42%-54%; a toughened resin 4%-10%; carbon black 33%-47%; a dispersant 1%-3%; wherein, the toughened resin is a polymer of acrylic acid and siloxane; and use thereof. The conductive plastic of the present invention has a low melting temperature and high conductive performance, and is suitable for a wire cable shielding layer.

A cable signal transmission system according to the present disclosure includes a differential driver to generate a differential signal between a positive phase signal and a negative phase signal from a signal inputted to the differential driver, a splitter to split the positive phase signal into two or more split positive phase signals, and to split the negative phase signal into two or more split negative phase signals, and a multi-core cable having four or more cores and connected to the splitter, to separately transmit each of the signals after the splitting by the splitter. In the multi-core cable, each of the following inner cables: two or more inner cables via which the split positive phase signals are transmitted and two or more inner cables via which the split negative phase signals are transmitted is disposed contiguously.

A cable signal transmission system according to the present disclosure includes a differential driver to generate a differential signal between a positive phase signal and a negative phase signal from a signal inputted to the differential driver, a splitter to split the positive phase signal into two or more split positive phase signals, and to split the negative phase signal into two or more split negative phase signals, and a multi-core cable having four or more cores and connected to the splitter, to separately transmit each of the signals after the splitting by the splitter. In the multi-core cable, each of the following inner cables: two or more inner cables via which the split positive phase signals are transmitted and two or more inner cables via which the split negative phase signals are transmitted is disposed contiguously.

A USB cable structure is provided, including: a cable body and a plurality of wires; the cable body extends a length along an axial direction and forms an inner space, and the inner space form an elliptical cross-section in the radial section of the cable body perpendicular to the axial direction; the plurality of wires are arranged in the elliptical inner space of the cable body, and the diameter of the wire can be increased by the enlarged elliptical inner space to reduce the attenuation of the transmission signal, thereby able to extending the length of the transmission cable to transmit the signal to a longer distance without the assistance of the attenuation compensation chip.

Provided are flexible hybrid interconnect circuits and methods of forming thereof. A flexible hybrid interconnect circuit comprises multiple conductive layers, stacked and spaced apart along the thickness of the circuit. Each conductive layer comprises one or more conductive elements, one of which is operable as a high frequency (HF) signal line. Other conductive elements, in the same and other conductive layers, form an electromagnetic shield around the HF signal line. Some conductive elements in the same circuit are used for electrical power transmission. All conductive elements are supported by one or more inner dielectric layers and enclosed by outer dielectric layers. The overall stack is thin and flexible and may be conformally attached to a non-planar surface. Each conductive layer may be formed by patterning the same metallic sheet. Multiple pattern sheets are laminated together with inner and outer dielectric layers to form a flexible hybrid interconnect circuit.

Provided are flexible hybrid interconnect circuits and methods of forming thereof. A flexible hybrid interconnect circuit comprises multiple conductive layers, stacked and spaced apart along the thickness of the circuit. Each conductive layer comprises one or more conductive elements, one of which is operable as a high frequency (HF) signal line. Other conductive elements, in the same and other conductive layers, form an electromagnetic shield around the HF signal line. Some conductive elements in the same circuit are used for electrical power transmission. All conductive elements are supported by one or more inner dielectric layers and enclosed by outer dielectric layers. The overall stack is thin and flexible and may be conformally attached to a non-planar surface. Each conductive layer may be formed by patterning the same metallic sheet. Multiple pattern sheets are laminated together with inner and outer dielectric layers to form a flexible hybrid interconnect circuit.

A cable includes a pair of conductors extending longitudinally and spaced apart from each other, an inner insulating layer circumferentially wrapped around an outside of the conductors and fixing the conductors, a conductive shielding layer circumferentially wrapped around an outside of the inner insulating layer, and an outer insulating layer circumferentially wrapped around an outer peripheral surface of the conductive shielding layer. At least one of the conductive shielding layer and the outer insulating layer includes a pair of diametrically opposed circumferential halves. Each circumferential half surrounds a part of a circumference of the inner insulating layer and extends longitudinally.

A cable includes: a pair of core wires; a shielding layer covering the pair of core wires; an insulating outer layer covering the shielding layer; a ground wire between the pair of core wires and the shielding layer; and a filler wire between the pair of core wires and the shielding layer, and the filler wire is arranged symmetrically with the ground wire.