H - Electricity – 01 – B
Patent
H - Electricity
01
B
337/70
H01B 7/08 (2006.01)
Patent
CA 1147822
ABSTRACT OF THE DISCLOSURE A shielded flat cable useful as transmission line for example in computer back plane wiring and connection to peripherals, and in which electrical shielding is provided without substantial impedance shift while obtaining sub- stantial elimination of backward cross talk and significant reduction in forward cross talk. This is accomplished utilizing cable cores which are flat multi-conductor electric cable components in which the body of solid dielectric material serving to retain and insulate the conductors has its parallel wide faces ribbed, i.e., convoluted about the conductors providing alternate lands and grooves running the length of the cable. Flat spacer strips of solid dielectric material are positioned one on each face of the cable dielectric body abutting the lands, so that the spacer strips function to trap air as a dielectric between the lands in the grooves (and hence between the conductors as the conductors are positioned between lands in opposite faces of the cable core). The electrical shield enclosing the cable component is completed with a sheath of electrically conductive metal positioned about the cable core including the spacer strips.
359537
Carlisle Corporation
Osler Hoskin & Harcourt Llp
LandOfFree
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