Design And Validate Of A Large Satellite Electromagnetic Compatibility

EMC, a technology of electromagnetic interference control, concentrates on the study of electromagnetic interference. As for a satellite, most of the electromagnetic interference results from the satellite itself. Some large satellite has the payload of power consumption up to ten thousand watts. It is equipped with X frequency band antenna for mission and relay terminal, Ka frequency band antenna for communication system, S frequency band detective antenna, L frequency band navigation receiver antenna and a variety of electronic devices and components. In limited space lie the complex electronic system and receiver system including the high voltage load loop,high sensitive receiver loop and high speed digital management circuit.Owing to high voltage pulse and the frequently-changed bus load, the electronic devices become susceptible to be interfered in various ways. To guarantee all the devices to work coordinately, a strict EMC design and verification is necessary.The study is aimed at the satellite work mode of multi frequency antenna and big current pulse. More research is conducted on space radiation environment, star product configuration layout optimization, entire star grounding and cable network key aspects such as anti-jamming performance analysis. Besides, the project targets to optimize the satellite EMC design andensure the satellite on-orbit long life-span as well as high reliable operation via reasonable and effective electromagnetic compatibility verification technology.