Data transmission cable with plurality of groups of differential signal transmission units sharing same ground

Abstract

The invention discloses a data transmission cable with a plurality of groups of differential signal transmission units sharing the same ground, which comprises a plurality of groups of differential signal transmission units and a plurality of ground wires, wherein the differential signal transmission units and the ground wires are arranged according to a set combination and adopt a transparent insulating hot-melt mylar and a single-sided conductive aluminum foil mylar to be attached to each other; the differential signal transmission unit comprises a hot-melt copper foil mylar and a pair of differential signal lines wrapped by the hot-melt copper foil mylar; the outer side of the hot-melt copper foil mylar is a conductive side and is attached to the conductive side of the single-sided conductive aluminum foil mylar; and the ground wire is connected in a mode of being attached to the conductive side of the single-sided conductive aluminum foil mylar. According to the data transmission cable with the plurality of differential signal transmission units sharing the same ground, the defect that characteristic impedance changes due to the fact that two metal foils cannot be tightly attached directly is overcome, the bandwidth of data transmission is increased, the insertion loss is reduced, and higher density is achieved at the same time.

Description

technical field [0001] The invention relates to the technical field of data transmission cables, in particular to a data transmission cable with a common ground for multiple sets of differential signal transmission units. Background technique [0002] At present, there are mainly three types of common data transmission cables: the first one is to attach two upper and lower pieces of aluminum foil mylar to wrap a group of differential signal transmission units, and the aluminum foil mylar is used as a reference layer to connect the ground wire to ground; the second One is to wrap a group of differential signal wires together with the ground wire through aluminum foil Mylar as a set of differential signal transmission units. Aluminum foil Mylar wraps a set of differential signal wires together with two ground wires as a set of differential signal transmission units. The ground wires are on the left and right sides of the center connection of the two conductors and are on the s...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides a data transmission cable with multiple sets of differential signal transmission units sharing the same ground, which avoids the shortcoming of the characteristic impedance change caused by directly passing two metal foils that cannot be closely bonded, and improves It increases the bandwidth of data transmission, reduces the insertion loss and has higher density at the same time

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