High density shielded electrical cable and other shielded cables, systems, and methods

摘要

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 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.

主权项

1. A shielded electrical ribbon cable, comprising:
adjacent first and second conductor sets extending lengthwise along the cable, each conductor set including two or more insulated conductors, the first conductor set comprising a ground conductor generally lying in a plane of the two or more insulated conductors of the first conductor set, at least 90% of a periphery of each conductor set being encompassed by a shielding film; and first and second non-conductive polymeric films disposed on opposite sides of the cable, the first and second polymeric films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the polymeric first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second polymeric films in combination form pinched portions of the cable on each side of each conductor set; wherein, when the cable is laid flat, a distance between a center of the ground conductor of the first conductor set and a center of the nearest insulated conductor of the second conductor set is σ1, a center-to-center spacing of the insulated conductors of the second conductor set is σ2, σ1/σ2 being greater than 0.7.