Combined insulated high-speed core wire and combined application method of high-speed core wire

Abstract

The invention relates to a combined insulating high-speed core wire and a combined application method of the high-speed core wire. The combined insulating high-speed core wire comprises a first insulating layer and a second insulating layer, the first insulating layer is arranged in the high-field-intensity area, the second insulating layer is arranged in the low-field-intensity area, and the dielectric constant of the first insulating layer is lower than that of the second insulating layer. A differential-mode coupling effect and a common-mode coupling effect are taken into consideration, on one hand, an area with high field intensity is made of a material with a low dielectric constant, attenuation amplification caused by high field intensity is effectively counteracted, so that the heating difference in the cross section direction of the cable is reduced, negative effects caused by a field intensity concentration effect are also reduced to the minimum, and the effect of reducing cable attenuation is achieved; meanwhile, the stable transmission life of the cable is prolonged; on the other hand, due to the existence of the prefabricated combined insulation, the conductor spacing can be accurately controlled, and the problem that the consistency of the conductor spacing in the manufacturing process is uncontrollable is solved; during signal transmission, a certain step exists between the differential mode and the common mode, so that the integrity of signal transmission is ensured.

Description

technical field [0001] The present application relates to the field of communication wires and cables, in particular to a combined insulated high-speed core wire and a combined application method of the high-speed core wire. Background technique [0002] In the era of 5G construction, large-scale and ultra-large-scale data centers have developed and emerged rapidly, and the server market has grown rapidly. The current maximum transmission rate of high-speed cables used to transmit data is 56Gbps for a single link. However, as the signal rate of a single link evolves from 56Gbps to 112Gbps, the attenuation requirements of cables are also getting higher and higher, so the only way to reduce The attenuation of the cable can ensure that the cable of the same length can carry and transmit higher frequency signals. [0003] High-speed cables generally use differential pairs for signal transmission. Low-end products directly coat the shielding layer on the two cores, which is low ...

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Problems solved by technology

[0004] However, the reduction of the attenuation in the existing technology is limited. Although the distance between the conductors has become smaller, the signal coupling effect will cause the medium to have a non-uniform distribution of the field strength in the cross-sectional direction, and the field strength in the local area is concentrated, such as figure 2 and image 3 as shown, figure 2 It is the distribution diagram of differential signal field strength, the differential mode coupling effect increases the field strength in the middle area, image 3 It is the field strength distribution diagram of the common mode signal, and the common mode coupling effect increases the field strength in the areas on both sides

The heating degree of the medium in the area with high field strength is obviously higher than that of other mediums, and the attenuation increases sharply. At the same time, it leads to accelerated aging of the medium in this area. Long-term operation will affect the service life of the wire, resulting in errors in high-speed cable signal transmission.

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