An electrical ribbon cable includes an insulated conductor extending along a longitudinal axis of the cable. The cable also includes a shielding film that carries the insulated conductor. The shielding film has a variable thickness defining a thickened rib portion and a thinned connecting portion, these portions being electrically conductive and extending along the longitudinal axis. The insulated conductor is disposed proximate the rib portion. The insulated conductor may be one of multiple insulated conductors that are organized into multiple conductor sets including at least a first and second conductor set, each conductor set including one or more of the insulated conductors, and the rib portion may be disposed between the first and second conductor sets.

A flexible flat cable (FFC) includes a first insulation layer, at least one pair of conductors, a plurality of low-k dielectric layers, two second insulation layers, and at least one shielding layer. The pair of conductors is located within the first insulation layer. Each pair of conductors includes a plurality of first conductors, and the first conductors are axially extending and arranged in parallel. The low-k dielectric layers are embedded in the first insulation layer. Each of the pair of conductors or each of the first conductors is covered and surrounded with one low-k dielectric layer. The two second insulation layers are located on two surfaces of the first insulation layer. The shielding layer is located on the two second insulation layers opposite to the first insulation layer.

A shielded flat cable includes multiple flat conductors arranged in parallel, a lower insulating layer provided on lower surfaces of the multiple conductors, a lower shield layer provided on a lower surface of the lower insulating layer, a lower protective layer provided on a lower surface of the lower shield layer, a lower contact portion that is exposed from the lower protective layer and provided to contact a second contact member of the connector, and that is electrically coupled to the lower shield layer, a terminal in which the multiple conductors are exposed at an end, and a reinforcing plate provided on the lower surface of the lower insulating layer and the lower surfaces of the multiple conductors at the terminal. The multiple conductors extend along the lower insulating layer and the reinforcing plate, and the lower contact portion and the terminal overlap in a side view.

Embodiments of the present disclosure are directed to a flexible flat cable. Two insulating material layers are sandwiched with a plurality of conductors therebetween by two adhesive layers, and a metal shielding layer is attached to an outer side of the two insulating material layers by a laminated adhesive layer. The conductors are bare conductors, and the laminated adhesive layer is a laminated adhesive layer with bubbles. The flexible flat cable is small in size, which not only meets the requirements of characteristic impedance and insertion loss in industry, but also significantly reduces the cost compared with the conventional flexible flat cable made of traditional electronic round wires.

A shielded flat cable includes multiple conductors arrayed in parallel along a first plane, a resin insulating layer including first and second resin insulating layers that cover the conductors, the first plane being sandwiched between the first and second resin insulating layers, a shield layer that covers an outer surface of the resin insulating layer and that includes an adhesive, and a pair of flame-retardant resin films that cover an outer surface of the shield layer. The pair of resin films have a first bonding section and a second bonding section where the pair of resin films are bonded to each other. The outer surface of the shield layer has a first portion that contacts the first bonding section and a second portion that contacts the second bonding section. The shield layer has a third bonding section where the adhesive is bonded to each other.

An automated assembly sensor cable has a generally wide and flat elongated body and a registration feature generally traversing the length of the body so as to identify the relative locations of conductors within the body. This cable configuration facilitates the automated attachment of the cable to an optical sensor circuit and corresponding connector. In various embodiments, the automated assembly sensor cable has a conductor set of insulated wires, a conductive inner jacket generally surrounding the conductor set, an outer jacket generally surrounding the inner jacket and a registration feature disposed along the surface of the outer jacket and a conductive drain line is embedded within the inner jacket. A strength member may be embedded within the inner jacket.

An automated assembly sensor cable has a generally wide and flat elongated body and a registration feature generally traversing the length of the body so as to identify the relative locations of conductors within the body. This cable configuration facilitates the automated attachment of the cable to an optical sensor circuit and corresponding connector. In various embodiments, the automated assembly sensor cable has a conductor set of insulated wires, a conductive inner jacket generally surrounding the conductor set, an outer jacket generally surrounding the inner jacket and a registration feature disposed along the surface of the outer jacket and a conductive drain line is embedded within the inner jacket. A strength member may be embedded within the inner jacket.

The subject matter of the present disclosure may be embodied in devices, such as flexible wiring, that include: an elongated flexible substrate; multiple electrically conductive traces arranged in an array on a first side of the elongated flexible substrate; and an electromagnetic shielding layer on a second side of the elongated flexible substrate, the second side being opposite the first side, in which the elongated flexible substrate includes a fold region between a first electronically conductive trace and a second electrically conductive trace such that the electromagnetic shielding layer provides electromagnetic shielding between the first electronically conductive trace and the second electrically conductive trace.

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.

Electrical cables and optical waveguides are disclosed as including an electrically insulative foam. The electrically insulative foam can coat at least one electrical conductor of the electrical cable. The electrically insulative foam can coat the optical fiber of the waveguide. The electrically insulative foam can also define a waveguide.