Analysis of the characteristic impedance of the transmission line under dual redundancy mechanism

被引：0

作者：

Zhu F. ^{[1
]}

Xie K. ^{[1
]}

机构：

[1] School of Aerospace Science and Technology, Xidian University, Xi'an

来源：

Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2021年 / 43卷 / 08期

关键词：

Cable network; Impedance match; Redundancy transmission; Transmission line;

D O I：

10.12305/j.issn.1001-506X.2021.08.33

中图分类号：

学科分类号：

摘要：

In aerospace system, the redundancy mechanism like dual-line back-up method may change the parallel impedance of the transmission line, which may lead to signal deterioration. In this paper, on the multiconductor transmission line theory, an impedance model in redundant condition is proposed. Theoretical and simulation analysis are performed to evaluate the impedance of five redundant connection styles under three commonly used structures with one shared shielding. Theoretical analysis indacates that the impedance of the redundant cable assemblies is determined by both the parameter matrix and the redundancy feature matrix of the cable. Simulation result indicates that the quad-twisted structure has better impedance continuity than the others. Compared with independent shielding structure, the quad-twisted structure of the cable could reduce the weight of cable assemblies meanwhile maintaining the impedance continuity, which shows an experience and a reference for the design redundancy cable network of launch vehicle. © 2021, Editorial Office of Systems Engineering and Electronics. All right reserved.

引用

页码：2303 / 2310

页数：7

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