宇航用射频同轴电缆组件放电抑制技术研究
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摘要
在航天器入轨与正轨运行中宇航用射频同轴电缆组件均需带电工作,其低气压放电效应与真空微放电效应是影响功率射频同轴连接器性能及可靠性的重要因素,由此进行了宇航用射频同轴电缆组件放电抑制技术研究。空间环境使用的宇航用射频同轴电缆组件采用的放电抑制技术,主要包括提高放电效应功率阈值、增加通气孔、导体间隙尺寸优化、连接器精密补偿技术、电缆二次处理、壳体表面钝化处理、优化填充介质等。经过同等试验量级的试验验证,上述放电抑制技术的采用可有效抑制电缆组件的低气压放电和真空微放电,提升电缆组件传输功率信号时的可靠性与稳定性。
In orbit-entry and orbit-determination operation of spacecraft, the radio frequency(RF) coaxial cable assembly for aerospace needs live line work. The low-pressure discharge effect and vacuum micro-discharge effect are important factors affecting the performance and reliability of power RF coaxial connector. Therefore, the research on discharge suppression technology of RF coaxial cable assembly for aerospace is carried out. Discharge suppression technology for RF coaxial cable assembly used in space environment mainly includes increasing discharge effect power threshold, increasing ventilation holes, optimizing conductor gap size, precision compensation technology for connectors, secondary treatment of cables, passivation treatment of shell surface, optimizing filling medium, etc. Through the same test level, the application of the above discharge suppression technology can effectively suppress the low-pressure discharge and vacuum micro-discharge of cable assembly, and improve the reliability and stability of power signal transmission of cable assembly.
In orbit-entry and orbit-determination operation of spacecraft, the radio frequency(RF) coaxial cable assembly for aerospace needs live line work. The low-pressure discharge effect and vacuum micro-discharge effect are important factors affecting the performance and reliability of power RF coaxial connector. Therefore, the research on discharge suppression technology of RF coaxial cable assembly for aerospace is carried out. Discharge suppression technology for RF coaxial cable assembly used in space environment mainly includes increasing discharge effect power threshold, increasing ventilation holes, optimizing conductor gap size, precision compensation technology for connectors, secondary treatment of cables, passivation treatment of shell surface, optimizing filling medium, etc. Through the same test level, the application of the above discharge suppression technology can effectively suppress the low-pressure discharge and vacuum micro-discharge of cable assembly, and improve the reliability and stability of power signal transmission of cable assembly.
引文
[1] 刘中华,李树杰. 星用微波组件低气压放电与真空微放电效应研究[J]. 电子元器件与可靠性,2014,32(4):4-7.
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[3] 徐学基,诸定昌. 气体放电物理[M]. 上海:复旦大学出版社,1996.
[4] 田波,钟剑锋. 星载功率组件微放电技术研究[J]. 电子工程师,2004,30(4):12-13.
[5] 梁昌洪,谢拥军,官柏然. 简明微波[M]. 北京:高等教育出版社,2006:159.
[6] ALFONSECA M,CONDE L,DE LARA J,et al. Prediction of corona and multipactor RF breakdown thresholds using the CEST (corona electron simulation tool) software[C]//Proceedings of the 6th International Workshop on Multipactor. 2008:1-8.
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