Low cross talk and impedance controlled electrical cable assembly
AssigneeFCI Americas Technology, Inc.
InventorRichard A. Elco
Life of this patent
Estimating the term…
Abstract
An electrical cable assembly in which the conductive and dielectric elements are arranged in a composite with a conductive I-beam shaped geometry in which the conductive element is perpendicularly interposed between two parallel dielectric and ground plane elements. Low cross talk and controlled impedance are found to result from the use of this geometry.
Claims29
An electrical cable assembly for reducing cross-talk and controlling impedance, having a longitudinal length and comprising a metallic element generally extending along said length and flanked by opposed dielectric elements, each dielectric element including a ground plane, wherein said metallic element is essentially transverse relative to said ground planes.
An electrical cable assembly for reducing cross-talk and controlling impedance, comprising:
- a pair of spaced, generally parallel dielectric flanges, each having:
- an exterior surface;
- and
- an interior surface, said interior surface of one of said flanges facing said interior surface of the other of said flanges;
- a first conductive element on at least a part of said exterior surface of each of said flanges forming respective ground planes;
- a plurality of dielectric webs extending between said flanges at an angle to said ground planes, each having:
- opposed major surfaces defining sides;
- and
- opposed minor surfaces defining edges, each edge fixed to said interior surface of a respective one of said flanges;
- and
- a plurality of second conductive elements, each on at least part of one of said sides of a respective one of said webs;
- wherein at least one of said sides of at least one of said webs reside in an interior of the electrical cable assembly and at least one of said second conductive elements reside in the interior.
An electrical cable assembly for reducing cross-talk and controlling impedance, comprising:
- a pair of dielectric elements, each having a dielectric constant and a ground plane;
- a plurality of discrete conductive elements extending between said dielectric elements and having:
- opposed major surfaces defining sides;
- and
- opposed minor surfaces defining edges, each edge fixed to a respective one of said dielectric elements for edge coupling to said ground planes;
- and
- a material abutting at least one of said sides of said plurality of conductive elements and having a dielectric constant less than said dielectric constants of said dielectric elements.
A method of reducing cross-talk and controlling impedance in an electrical cable assembly having a longitudinal length, comprising the steps of:
- providing opposed dielectric elements, each dielectric element including a ground plane;
- providing a plurality of discrete metallic elements generally extending along the length, each metallic element having opposed major surfaces defining sides and opposed minor surfaces defining edges;
- and
- positioning said metallic elements between said dielectric elements so that said metallic elements are essentially transverse to said ground planes, with each of said edges of said metallic elements adjacent a respective one of said ground planes for edge coupling to said ground planes.
In an electrical cable assembly having a strip line arrangement of a plurality of signal contacts flanked by ground planes, the improvement comprising said signal contacts having an elongated cross-section defined by minor surfaces and major surfaces, with said major surfaces extending transversely between said ground planes.
Dependencies are inferred from the claim text.