A design method and system for improving crosstalk measurement between signal lines on a PCB

A technology of PCB board and design method, which is applied in the design method and system field of improving crosstalk measurement between signal lines on PCB board, and can solve the problems of insufficient accuracy of measurement results, low efficiency of crosstalk measurement between signal lines, etc.

Active Publication Date: 2019-04-26
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0006] This application provides a design method and system for improving the measurement of crosstalk between signal lines on a PCB board, so as to solve the

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  • A design method and system for improving crosstalk measurement between signal lines on a PCB
  • A design method and system for improving crosstalk measurement between signal lines on a PCB
  • A design method and system for improving crosstalk measurement between signal lines on a PCB

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[0033] In order to enable those skilled in the art to better understand the technical solutions in the application, the following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Obviously, the described The embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

[0034] In order to better understand the present application, the embodiments of the present application are explained in detail below in conjunction with the drawings.

[0035] See Figure 5 , Figure 5 This is a schematic flow chart of a design method for improving the measurement of crosstalk between signal lines on a PCB provided by an embodiment of this...

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Abstract

The invention discloses a design method and system for improving crosstalk measurement between signal lines on a PCB. The method comprises the steps that firstly, the effective coupling crosstalk length between the two signal lines on the PCB is determined; The effective coupling crosstalk length is determined; The signal transmission delay time between the two signal lines is greater than or equal to 1ns by prolonging the wiring length of the terminal which is not terminated in the two signal lines, so that the influence of signal reflection at each signal wiring terminal of the PCB on the crosstalk waveform can be effectively avoided, and the accuracy and the measurement precision of the crosstalk waveform test are further improved. The system comprises a four-port VNA device and a PCB connected with the four-port VNA device. Through the system, the crosstalk waveform test accuracy and measurement precision can be improved, the test difficulty is reduced, the test efficiency is improved, and the space of the PCB can be saved, so that the space utilization rate of the PCB is improved.

Description

Technical field [0001] This application relates to the technical field of PCB design, in particular to a design method and system for improving the measurement of crosstalk between signal lines on a PCB. Background technique [0002] With the increase of high-speed interface rate, in the design and development of server products, designers usually improve the quality of high-speed signals during long-distance transmission from three aspects: signal insertion loss, impedance reflection, and crosstalk between signals, and evaluate the quality of high-speed signals , Usually combined with the signal simulation in the early stage and the actual measurement of the board card proofing in the later stage to control. [0003] Among them, when measuring crosstalk between signals, due to the structural combination of the PCB board itself, the DK (Dielectric Constant) value at the resin and the DK value at the glass cloth are different. Taking into account the influence of the difference bet...

Claims

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Application Information

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IPC IPC(8): G06F17/50G01R31/28
CPCG01R31/2818G06F30/392
Inventor 武宁
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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