Method for reducing impedance mismatch of signal connector

A technology of signal connector and impedance mismatch, which is applied to the parts, connections, and two-part connection devices of the connection device, etc. It can solve the problems of reducing the high-speed transmission capacity of the channel and the mismatching of the channel transmission impedance, and achieves strong anti-crosstalk and shielding effect, improve differential impedance performance, and meet the effect of high-speed transmission

Inactive Publication Date: 2019-07-23
武汉山岭智能科技有限公司
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0018] For signal connectors, if the characteristic impedance cannot be reasonably designed, it will cause impedance mismatch in channel transmission, cause signal reflection and eventually reduce the high-speed transmission capability of the channel

Method used

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  • Method for reducing impedance mismatch of signal connector
  • Method for reducing impedance mismatch of signal connector
  • Method for reducing impedance mismatch of signal connector

Examples

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Embodiment Construction

[0041] Such as figure 2 As shown, a method for reducing the impedance mismatch of a signal connector includes the following steps:

[0042] Step 1. Select an LVDS cable, and select the inner conductor side length, length L, outer diameter D, inner diameter d, and dielectric constant ε of the cable, and obtain the differential impedance Zdiff of the quarter-point coaxial contact through the first formula;

[0043] Step 2. When manufacturing the four-point coaxial contact of the signal connector, a precision molding process is used to limit the size and position of each part of the four-point coaxial contact to the preset position accuracy, so that the four-point coaxial contact The position accuracy between the inner conductors reaches within the first preset range;

[0044] Step 3. Limit the wave impedance of the quarter-coaxial metal of the signal connector to be smaller than the air wave impedance through the second formula, so that the electromagnetic wave capability tran...

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Abstract

A method for reducing impedance mismatching of a signal connector comprises the following steps that step 1, an LVDS cable is selected, the side length, the length L, the outer diameter D, the inner diameter d and the dielectric constant Epsilon of inner conductors of the cable are selected, and the differential impedance Zdiff of a quartered coaxial contact is obtained through a first formula; step 2, when the quartered coaxial contact of the signal connector is manufactured, a precision forming process is adopted to limit the size and position of each part of the quartered coaxial contact tobe within a preset required position precision, so that the position precision among the four inner conductors is within a first preset range; and step 3, the quartered coaxial metal wave impedance of the signal connector is limited to be smaller than the air wave impedance through a second formula, so that the electromagnetic wave capability transmission main mode in the quartered coaxial metalis propagated in the form of a magnetic field.

Description

technical field [0001] The invention relates to the technical field of high-speed aviation signal connectors, in particular to a method for reducing impedance mismatch of signal connectors. Background technique [0002] High-speed aviation signal connectors have become a key part of telecommunications and data communications that affects the signal transmission quality of the entire aviation system, and is a bottleneck for increasing transmission rates. As the structure of electronic systems becomes more and more complex, the high-speed and digital signal transmission, the integration of various signal transmissions, the miniaturization and miniaturization of product volume, the combination of modules, and the convenience of plugging and unplugging, how to ensure that each connection The reliability of the device connection has become an extremely difficult subject. [0003] Aerospace connectors and their components are important supporting interface components for aerospac...

Claims

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Application Information

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IPC IPC(8): H01R13/6474H01R13/6473H01R13/6461H01R13/6581H01R24/44
CPCH01R13/6461H01R13/6473H01R13/6474H01R13/6581H01R24/44
Inventor 金雷李嵩
Owner 武汉山岭智能科技有限公司
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