Through-hole region design system and method for differential signal line

Abstract

The invention relates to a through-hole region design system and method for differential signal line, which is applied in layout software for printed circuit board (PCB), comprising firstly selecting a first and a second signal line and reading attribute of the first and second line; subsequently, retrieving a first safe distance and a first through-hole diameter from the first line attribute of the first signal line, and retrieving a second save distance and a second through-hole diameter from the second line attribute of the second signal line; thereafter, computing by special computation rule according to the first safe distance and the first through-hole diameter to obtain a first safe diameter, and computing by special computation rule according to the second safe distance and the second through-hole diameter to obtain a second safe diameter; lastly, setting a layout prohibition region by setting rules according to the first and second safe diameters, so as to prohibit laying the conductive material in the layout prohibition region by the layout software. Therefore, deficiency of unmatched resistance and electromagnetic interference generated in wiring process of the differential signal line is avoided.

Description

technical field [0001] The present invention relates to a through-hole region design technology for differential signal lines, and more particularly relates to a through-hole region design technology for eliminating the interference generated by conductive materials in the through-hole region on differential signal lines. Background technique [0002] With the continuous development and improvement of electronic technology, the design of electronic circuits is also developing towards the common goal of high performance and high quality in the process of constantly discovering and solving problems. Existing electronic engineers usually complete the circuit layout (Layout) of the printed circuit board through various printed circuit board wiring software (such as Protel software). In the process of circuit layout, for electronic engineers, differential signal lines appear frequently as the most commonly used signal lines. Differential signal lines can be applied to signal line...

AI Technical Summary

Problems solved by technology

Moreover, due to the conductive material in the above-mentioned through-hole area, such as the wiring layer 11 with other signal lines, it will generate electromagnetic interference (EMI) with the differential signal line, thereby affecting the transmission quality of the differential signal line. Differential signal line routing becomes more difficult

[0006] Therefore, how to provide a design technology for the through-hole area of ​​the differential signal line, so as to eliminate the interference of the conductive material in the through-hole area on the differential signal line, and avoid the impedance of the differential signal line during the routing process due to this interference Disadvantages of Mismatch and EMI

Images