Low-loss high-speed cable and flat cable

Abstract

The invention discloses a low-loss high-speed cable and a flat cable. The low-loss high-speed cable comprises a wire core group, a first shielding layer, a second shielding layer and an outer coatinglayer; the first shielding layer wraps the wire core group; the second shielding layer wraps the first shielding layer; and the outer coating layer coats the second shielding layer; the wire core group comprises two inner conductors; two first fluorinated ethylene propylene insulating layers respectively cover the two inner conductors; and the two first fluorinated ethylene propylene insulating layers are covered with a second fluorinated ethylene propylene insulating layer which is formed by simultaneous extrusion molding. The wire rod of the low-loss high-speed cable of the invention is soft; the low-loss high-speed cable has high temperature resistance; the shielding layers of the low-loss high-speed cable can achieve full shielding; and the dielectric constant consistency of the low-loss high-speed cable is relatively high. With the low-loss high-speed cable adopted, signal attenuation loss can be reduced.

Description

technical field [0001] The invention relates to the technical field of communication wires, in particular to a low-loss high-speed cable and a flat cable. Background technique [0002] At present, electronic signal interface lines such as SFP, QSFP, CXP, and SAS are gradually being applied in communication equipment. SFP (Small Form-factor Pluggables) can be simply understood as an upgraded version of GBIC; the SFP module (half the size of the GBIC module, can configure more than double the number of ports on the same panel; because the SFP module is functionally different from The GBIC is basically the same, therefore, it is also called miniaturized GBIC (Mini-GBIC) by some switch manufacturers; the SFP module compresses the size and power consumption by placing the CDR and electrical dispersion compensation outside the module; it is used for telecommunications and Optical communication applications in data communication; SFP connects network equipment such as switches, ro...

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Problems solved by technology

[0003] However, the current SFP, QSFP, CXP, SAS and other interface cables still have the following problems: first, the insulating material of the core group is usually PE, the wire is relatively hard, and the high temperature resistance is not good; second, the shielding layer is difficult to align the core The group conducts 360-degree signal shielding without dead ends. In the future high-frequency, high-power signal transmission process, the stability and effective transmission of the signal cannot be guaranteed; third, the core group is two core wires that are extruded separately Combination, the consistency of the core wires needs to be matched between the two core wires, the inconsistency of capacitance and impedance will lead to signal distortion, the consistency of the dielectric constant is relatively low, and the signal attenuation loss is large

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