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

摘要

A shielded electrical ribbon cable includes conductor sets each including one or more insulated conductors, and a first and second shielding film on opposite sides of the cable. In transverse cross section, cover portions of the shielding films substantially surround each conductor set, and pinched portions of the films form pinched portions of the cable on each side of each conductor set. Dense packing is achieved while maintaining high frequency electrical isolation between conductor sets. When the cable is laid flat, a quantity s/Dmin is in a range from 1.7 to 2, where S is a center- to-center spacing between nearest insulated conductors of two adjacent conductor sets, and Dmin is the lesser of the outer dimensions of such nearest insulated conductors. Alternatively, a first and second conductor set each having only one pair of insulated conductors can satisfy a condition that Σ/σ1 is in a range from 2.5 to 3.

主权项

1. A shielded electrical ribbon cable, comprising:
a plurality of conductor sets extending lengthwise along the cable and being spaced apart from each other along a width of the cable, and each conductor set including one or more insulated conductors, the conductor sets including a first conductor set adjacent a second conductor set; and a first and second shielding film disposed on opposite sides of the cable, the first and second films including cover portions and pinched portions arranged such that, in transverse cross section, the cover portions of the first and second films in combination substantially surround each conductor set, and the pinched portions of the first and second films in combination form pinched portions of the cable on each side of each conductor set; wherein, when the cable is laid flat, a first insulated conductor of the first conductor set is nearest the second conductor set, and a second insulated conductor of the second conductor set is nearest the first conductor set, and the first and second insulated conductors have a center-to-center spacing S; and wherein the first insulated conductor has an outer dimension D1 and the second insulated conductor has an outer dimension D2; and wherein S/Dmin is in a range from 1.7 to 2, where Dmin is the lesser of D1 and D2.