航天器环境工程2024，Vol.41Issue(2)：176-180,5.DOI:10.12126/see.2023128
高灵敏微波载荷卫星出舱电缆及舱体屏蔽的EMC设计
EMC design for cables crossing cabin and cabin shielding of satellite with high sensitive microwave payloads
周丽萍 1程丽丽 1张亚洁1
作者信息
- 1. 北京空间飞行器总体设计部,北京 100094
- 折叠
摘要
Abstract
Satellites with high sensitive microwave payloads present a high demand for electromagnetic shielding efficiency of cabin panels.However,the usage of cables crossing cabin may significantly reduce the cabin electromagnetic shielding efficiency.In this article,a method for analyzing the electromagnetic shielding efficiency of the ideal cabin panels(without cables crossing the cabin)of spacecraft was proposed,and design principles of shielding the electromagnetic interference above 1 GHz were provided.Then,the mechanism by which the cables crossing cabin become the main factor affecting the efficiency of cabin panels shielding P-band(150 MHz to 1 GHz)electromagnetic wave was analyzed.A calculation formula for the interference current in relation with electromagnetic field strength was given.Finally,an electromagnetic compatibility(EMC)design method for the cables crossing cabin and cabin shielding was suggested,and a grounding resistance measurement method was offered to verify the grounding effectiveness of the cable shielding skin,which may contribute to identify the key control measures for the EMC implementation of the satellite assembly.The efficiency of the whole satellite EMC test has been effectively improved by the proposed method.关键词
出舱电缆/接地/杂波电流/电磁兼容设计Key words
cables crossing cabin/grounding/clutter current/electromagnetic compatibility design分类
航空航天引用本文复制引用
周丽萍,程丽丽,张亚洁..高灵敏微波载荷卫星出舱电缆及舱体屏蔽的EMC设计[J].航天器环境工程,2024,41(2):176-180,5.
