电子元件与材料2026，Vol.45Issue(1)：114-119,6.DOI:10.14106/j.cnki.1001-2028.2026.1310
基于线宽差异的微带线分段等长设计研究
Research on the segmented equal-length design of microstrip lines based on line width difference
李德恒 1宗艳艳 1王栋 1刘波1
作者信息
- 1. 浪潮电子信息产业股份有限公司,山东 济南 250101||高效能服务器和存储技术国家重点实验室,山东 济南 250101
- 折叠
摘要
Abstract
To address signal integrity issues caused by the propagation delay skew between positive/negative(P/N)microstrip lines and to enhance differential signal transmission quality in high-speed PCB designs,a segmented equal-length microstrip line routing method based on line width differences was proposed.This approach abandoned the traditional overall equal-length routing strategy,instead implementing independent delay compensation for microstrip lines of different widths on the same layer.By integrating transmission delay theory and mode conversion theory,the simulation models for both the conventional overall and the proposed segmented routing structures were established.Simulation results demonstrate that the segmented equal-length design achieves significant performance improvements,reducing the P/N delay skew by 71%,markedly improving insertion loss at frequencies above 25 GHz,enhancing mode conversion performance by 5-8 dB,and yielding better eye diagram quality with an increase in eye height by 10 mV,an increase in eye width by 0.31 ps,and effective jitter suppression.The proposed method can effectively suppress mode conversion and improve signal integrity,offering a novel solution for high-speed circuit design.关键词
电路板/信号完整性/差分对内偏移/分段等长/模态转换/传输线Key words
PCB/signal integrity/intra-pair skew/segmented equal-length/mode conversion/transmission line分类
信息技术与安全科学引用本文复制引用
李德恒,宗艳艳,王栋,刘波..基于线宽差异的微带线分段等长设计研究[J].电子元件与材料,2026,45(1):114-119,6.
