Difference signal pair twist structure USB3.1 wire and manufacture method therefor

Abstract

The invention relates to a difference signal pair twist structure USB3.1 wire which is characterized by comprising an internal structure, an outer shielding layer (6), a woven layer (7) and a protections sleeve layer (8), wherein the outer shielding layer (6), the woven layer (7) and the protection sleeve layer (8) are orderly arranged in an outward direction from the internal structure; the internal structure comprises four first signal wires (1), four electronic wires (2), a second signal wire (3), a power source wire (4) and a filling wire (5); every two of the four first signal wires (1) cling to each other and therefore the four first signal wires (1) are arranged to form a matrix; the power source wire (4) and the filling wire (5) are positioned in a gap formed at the inner sides of the four first signal wires (1), the four electronic wires (2) are respectively positioned in a gap formed at the outer sides of the four first signal wires (1), and the second signal wire (3) is placed in a gap formed at the outer sides of two first signal wires (1). The difference signal pair twist structure USB3.1 wire is advantaged by stable electrical performance, low wire material processing cost and low unit price of materials.

Description

technical field [0001] The invention relates to a differential signal pair twisted structure USB3.1 line. Background technique [0002] USB3.1 is the latest USB specification initiated by companies such as Intel. The data transmission speed can be increased to a speed of 10Gbps. Compared with USB3.0 technology, the new USB technology uses a more efficient data encoding system and provides more than double the effective data throughput rate. It is fully backward compatible with existing USB connectors and cables. [0003] The existing USB3.1 cables have two structures: [0004] see figure 1 , the first is a common-mode signal coaxial structure, in which there are eight coaxial cables, since the eight coaxial cables exist independently, the coaxial cables include conductor layers, insulation layer, winding layer, shielding layer and shielding layer, so that the working conditions of the eight coaxial conductors are difficult to be completely consistent (because it is diff...

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Problems solved by technology

[0004] see figure 1 , the first is a common-mode signal coaxial structure, in which there are eight coaxial cables, since the eight coaxial cables exist independently, the coaxial cables include conductor layers, insulation layer, winding layer, shielding layer and shielding layer, so that the working conditions of the eight coaxial conductors are difficult to be completely consistent (because it is difficult to ensure that the insulating layer, winding layer, shielding layer and shielding layer outside the conductor layer are uniform is consistent), so its electrical performance is unstable. In addition, because the structure of the eight coaxial cables is quite complicated, the production cost of the wire is very high, and the cost of electronic processing is also very high. Since the conductor layer is silver-plated copper and the shielding layer is copper foil Mylar makes the unit price of the wire material very high

[0005] see figure 2 , the second is a differential signal parallel mechanism, in which four groups of parallel wires are set, since the two wires between each group of parallel wires are wrapped by the same shielding layer and shielding layer, the work of these two wires when in use The conditions are relatively consistent (just make the insulating layer outside the conductor layer as consistent as possible), so its electrical performance is relatively stable, but its wire processing and electronic processing costs are also high. In addition, because the conductor layer is silver-plated copper, the shielding layer is Aluminum foil Mylar makes the unit price of the wire material higher

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