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A differential via impedance control method

A technology of differential via impedance and control method, which is applied in the direction of electrical connection formation of printed components, circuit devices, printed circuit components, etc. Control and other issues

Active Publication Date: 2018-12-11
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the impedance at the differential via is the most difficult to control. In order to ensure the continuity of the impedance at the via, a variety of differential via impedance control methods have been designed in the prior art. However, these differential via impedance control methods have not been rationally utilized. The purpose of better impedance control cannot be achieved, thus affecting the quality of the transmitted signal and reducing the stability of the system operation

Method used

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  • A differential via impedance control method
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  • A differential via impedance control method

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Embodiment Construction

[0033] The core of the present invention is to provide a differential via impedance control method, so that the design method of the PCB via hole can be rationally utilized to achieve the purpose of better impedance control, thereby improving the quality of the transmission signal and enhancing the stability of the system operation .

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0035...

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Abstract

The invention discloses a differential via impedance control method, which comprises the following steps: under the conditions of differential lines with different signal transmission rates and stub regions with different thicknesses, respectively presetting a PCB via design mode matched with each condition; According to the signal transmission rate of the differential line on the current PCB andthe thickness of the stub area at the via hole, determining the design mode at the via hole of the current PCB; and designing the via of the current PCB according to the design mode at the via of thecurrent PCB to control the impedance at the via. As can be seen, the design mode at the via hole of the PCB board is reasonably utilized to achieve the purpose of better impedance control, thereby improving the quality of the transmission signal and enhancing the stability of the system operation.

Description

technical field [0001] The invention relates to the field of differential line impedance design, in particular to a differential via hole impedance control method. Background technique [0002] With the development of high-speed transmission technology, differential lines are widely used in PCB (Printed Circuit Board, printed circuit board) circuit design. In the process of realizing high-quality transmission of the differential line, the impedance design of the differential line (the impedance change of the entire link is as small as possible) is particularly important. Among them, the impedance at the differential via is the most difficult to control. In order to ensure the continuity of the impedance at the via, a variety of differential via impedance control methods have been designed in the prior art. However, these differential via impedance control methods have not been rationally utilized. The purpose of optimal impedance control cannot be achieved, thereby affectin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K3/42H05K1/02
CPCH05K1/0251H05K3/42H05K2201/0784
Inventor 梁磊
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD