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High-speed differential paired-line structure through extrusion forming in one step and manufacturing method thereof

A technology of high-speed differential pair and manufacturing method, which is applied in the directions of conductors, conductor/cable insulation, and insulated cables, etc. It can solve problems such as inability to adjust at will, strict stability requirements, and deformation of insulating media, so as to save labor costs and Human resources, simplification of the process of making alignment structures, and the effect of stabilizing high-frequency characteristics

Inactive Publication Date: 2012-04-11
BIZLINK ELECTRONICS KUNSHAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in reality, such an alignment structure limits the ratio of the distance between the two signal wires to the distance between the signal wire and the shielding layer to be fixed at 2:1, which cannot be adjusted arbitrarily. Therefore, the high-frequency characteristics are less affected by the distance between the signal wire and the shielding layer. Large, so this type of wiring structure is easier to deform the insulating medium due to a slight squeeze from the outside, thus changing the distance between the signal wire and the shielding layer, affecting the characteristic impedance and other high-frequency characteristics
And because the insulating medium of the two signal wires is not fixed, the two signal wires may slide relative to each other, so the high-frequency characteristics of such an alignment structure are prone to instability
At the same time, such an alignment structure also has great disadvantages in manufacturing. Since the insulating medium outside the two wires must maintain the same degree of uniformity and thickness, the stability requirements during manufacturing are relatively strict, and the management cost is high. And the production efficiency is low

Method used

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  • High-speed differential paired-line structure through extrusion forming in one step and manufacturing method thereof
  • High-speed differential paired-line structure through extrusion forming in one step and manufacturing method thereof
  • High-speed differential paired-line structure through extrusion forming in one step and manufacturing method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0031] like figure 1 As shown in the figure, a high-speed differential pair structure formed by extrusion molding at one time includes an insulating dielectric layer 101, a first signal wire 102, a second signal wire 103 and a shielding layer 104. The insulating dielectric layer is made of plastic material, because the plastic material The insulation performance is good, and at the same time, its strength is relatively large, and its stability is strong. The insulating medium layer is made of one-time extrusion molding, and the overall structure is integrally formed. There is a fixed distance between the first signal wire and the second signal wire. The two are completely covered by the insulating dielectric layer, and the shielding layer is wrapped outside the insulating dielectric layer. The ratio of the distance between the two signal wires and the distance between the signal wire and the shielding layer is less than 2:1, so this kind of wire structure has a signal wire to t...

Embodiment 2

[0035] like figure 2 The difference between the second embodiment shown and the first embodiment is that only one side of the upper and lower surfaces of the insulating medium layer has a notch in the middle, and the other side is smooth. Such a design is beneficial for users to distinguish between the first signal wire and the second signal wire when using

Embodiment 3

[0037] like image 3 The third embodiment shown is different from the first embodiment in that the upper and lower surfaces of the insulating medium layer are both smooth. Such a design is beneficial to production control and structural stability of the signal line pair.

[0038] like Figure 4 Shown is a method for manufacturing a high-speed differential pair structure by one-time extrusion molding, and the specific steps are:

[0039] Step S101: supply wires, pull out the two signal wires from their respective wire reels, and send them out through the wire rack;

[0040] Step S102: Overmolding, passing the two signal wires respectively through the mold holes with fixed spacing;

[0041] Step S103: Injection molding. The insulating medium layer is injected while passing through the die hole. The entire injection molding process can be subdivided into several layers of injection molding. It can be injection molding with only one layer of hard plastic or foamed plastic, or i...

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Abstract

The invention discloses a high-speed differential paired-line structure through extrusion forming in one step, relating to the field of data signal transmission lines. The high-speed differential paired-line structure through the extrusion forming in one step comprises an insulated dielectric layer, a first signal conductor and a second signal conductor. The insulated dielectric layer is of a one-body structure, the insulated dielectric layer covers the first signal conductor and the second signal conductor, and a constant space is arranged between the first signal conductor and the second signal conductor. The high-speed differential paired-line structure has the advantages of stronger stability, more stable high-frequency characteristics and excellent differential mode attenuation. A manufacturing method of the high-speed differential paired-line structure through the extrusion forming in one step mainly comprises the following steps of: feeding lines: respectively drawing the two signal conductors out of respective conductor discs and feeding out the two signal conductors through a conductor frame; passing through a mold: guiding the two signal conductors to respectively pass through a mold hole with a specific space; injection molding: carrying out injection molding of the insulated dielectric layer in the process of passing through the mold hole; and cooling: cooling the paired line subjected to extrusion forming in water. During the manufacturing method, extrusion forming operation is performed only once, thus the process of manufacturing the paired-line structure is greatly simplified, the labor cost is reduced and the manpower resource is saved.

Description

technical field [0001] The invention relates to the field of data signal transmission lines. Background technique [0002] With the acceleration of the current digital engineering, high-definition video and audio electronic equipment are becoming more and more popular, and the requirements for data transmission lines are also getting higher and higher, and the requirements for speed and stability are also getting higher and higher. Traditional The data signal line can no longer fully meet the requirements of digital image technology for high resolution, high transmission rate, high color depth image and digital audio. [0003] The differential pair structure in the current high-speed data signal line usually includes two signal wires, each of which is covered with an insulating medium into a cylindrical shape, and then close together, and then wrapped with a shield on the outermost layer Floor. For this type of high-speed differential pair structure, the distance between t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B7/02H01B13/06H01B11/00
Inventor 谢金安
Owner BIZLINK ELECTRONICS KUNSHAN CO LTD