PCB transmission line corner effect simulation method based on parametric modeling

Through the PCB transmission line corner effect simulation method based on parameterized modeling, the problem of cumbersome operation of traditional simulation methods is solved, and the quality evaluation of multi-angle signal is quickly obtained, which improves design efficiency and signal transmission quality.

CN120278111APending Publication Date: 2025-07-08EMDOOR ELECTRONICS TECH
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Patent Information

Application Number
CN202510271874.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-06
Publication Date
2025-07-08

AI Technical Summary

Technical Problem

The existing PCB transmission line corner effect simulation methods lack convenient and effective parameterized modeling and multi-angle fast scanning functions, resulting in engineers needing to model and set simulation parameters for each corner angle separately. The operation is cumbersome and time-consuming, making it difficult to meet the actual needs of high-speed circuit design.

Method used

Using a method based on parameterized modeling, we draw fixed line segments and copy translation to form overlap, establish the corner area of the transmission line, and set the copy line segment as a rotating line segment that can rotate around the corner area, define the rotation angle as variable parameters, set the simulation port and perform parameterized scanning simulation, and automatically obtain the impedance matching characteristics and insertion losses at multiple corner angles.

Benefits of technology

It realizes that impedance matching characteristics and insertion losses at multiple corner angles can be obtained through a single parameterized scanning simulation, which improves design efficiency, simplifies operational processes, ensures signal transmission quality, and is suitable for the diversified needs of different PCB design projects.

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Abstract

The invention relates to a PCB (printed circuit board) transmission line corner effect simulation method based on parametric modeling, which comprises the following steps: drawing a fixed line segment, copying the fixed line segment, translating the fixed line segment along the length direction until the end part is overlapped, and establishing a corner area at the overlapped part; the copy line is set as a rotating line segment capable of rotating around the corner area, and the rotating angle is set as a variable parameter; the fixed line segment and the rotating line segment are combined into the same network line, simulation ports are arranged at the far ends of the fixed line segment and the rotating line segment, and the value of the simulation port rotation variable of the rotating line segment is the same as the rotation angle; and finally, setting simulation frequency bands and points, and scanning simulation. By establishing the three-dimensional simulation model, the impedance matching characteristics and the insertion loss at multiple corners can be automatically obtained through one-time scanning, modeling and parameter setting at the angles one by one are not needed, and the design efficiency is greatly improved; and finally, the corner angle range meeting the preset signal integrity requirement is screened out, and powerful technical support is provided for actual circuit board design.
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