High speed parallel symmetrical data cable

Abstract

The invention relates to a high speed parallel symmetrical data cable, and belongs to the technical field of signal transmission cables. The data cable comprises at least a pair of line pairs and an outer sheath. Each pair of line pairs comprises a first conductor core and a second conductor core; the first core comprises a first conductor and a first insulating layer extruded and wrapped outside the first conductor; the second conductor core comprises a second conductor body and a second insulating layer extruded and wrapped outside the second conductor body; the first conductor core and the second conductor core are leaned mutually and parallel in the length direction; each line pair is externally wrapped with a first screening layer; and the outer sheath is positioned outside the first screening layer. The invention has the advantages that an uneven interval generated by pair twinning in the prior art is eliminated; the consistent distance between the first conductor core and the second conductor core is ensured; and the ideal characteristic impedance of the first conductor core and the second conductor core is ensured, so that the attenuation and the loop loss are effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of signal transmission cables, in particular to a high-speed parallel symmetrical data cable. Background technique [0002] Data cables have been widely seen in literature, especially Chinese patent literature. For example, the utility model patent authorization announcement number CN2845120Y recommends a data cable with a conductive plastic shielding layer, and CN201051425Y introduces a data cable with an independent sub-shield. , CN2758948Y discloses an anti-jamming high-speed data cable, CN1183553C discloses a high-speed data cable with individually shielded twisted pairs, CN201081801Y discloses a star-quad data cable, CN101174495A discloses an armored data cable, CN2758946Y recommends A kind of shielding high-speed data cable and CN2609126Y have taught a kind of high-shielding outdoor data cable. In the above-mentioned documents, except for CN201081801Y and CN101174495A, they all focus on improving the ...

AI Technical Summary

Problems solved by technology

This structure will inevitably lead to problems of large attenuation and loop loss, because after the first and second wire cores 11, 12 are twisted, looseness will appear between the first and second wire cores 11, 12, and due to twisting The resulting voids are neither regular nor uniform, which affects the ability of the data cable to transmit signals, resulting in large attenuation and loop loss

The reason is very simple. The distance between the first and second wire cores 11 and 12 caused by twisting pairs is inconsistent. The difference in distance will cause the characteristic impedance of the first and second wire cores 11 and 12 to change, resulting in a large Delay difference, attenuation and loop loss, resulting in large fluctuations in the signal during use

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