Development of modal filter prototype for spacecraft busbar protection against ultrashort pulses

International Conference on Mechanical Engineering, Automation and Control Systems 2018

Khazhibekov, R.R.^1 ; Zabolotsky, A.M.^1 ; Zhechev, Y.S.^1 ; Kosteletskii, V.P.^1 ; Gazizov, T.R.^1

Tomsk State University of Control Systems and Radioelectronics, 40, Lenina Avenue, Tomsk

634050, Russia^1

关键词: Busbar protection;    Electrodynamic simulations;    Frequency dependence;    Insulation breakdown;    Modal filtering;    Modal filters;    On-board equipment;    Wave impedances;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/560/1/012145/pdf
DOI  :  10.1088/1757-899X/560/1/012145

来源: IOP

【 摘 要 】

The protection of the onboard equipment of the spacecraft from an ultrashort pulse (USP) based on modal filtering is proposed. The paper presents the results of the development of a modal filter (MF) prototype with a broad-side coupling. When choosing a structure, the maximum bus current, insulation breakdown voltage, wave impedance of line and the duration of the interfering USP are taken into account. To substantiate the choice of structure, quasi-static and electrodynamic simulations are performed. The simulation showed that the MF with resistance of 50 Ω at both ends of the passive conductor effectively weakens the 0.45-ns USP by 4 and with non-resistance connection on the passive conductor by 7. The MF prototype without resistors is made. Frequency dependence of |S 21| is measured. An experiment showed that the MF weakens the USP by 5.61. The bandwidth of the MF is 60 MHz.