Spacecraft Autonomous Navigation System PCB Bus Voltage Maximum Localization

Аuthors

Gazizov R. R.^1*, Zabolotsky A. M.^1**, Belousov A. O.^1***, Gazizov T. T.^2****

1. Tomsk State University of Control Systems and Radioelectronics, 40, Lenin str., Tomsk, 634050, Russia
2. Tomsk State Redagogical University, 60, Kievskaya str., Tomsk, 634061, Russia

*e-mail: ruslangazizow@gmail.com
**e-mail: zabolotsky_am@mail.ru
***e-mail: ant1lafleur@gmail.com
****e-mail: timurtsk@gmail.com

Abstract

This work emphasizes the signals maximums along the PCB multiconductor transmission lines study topicality. As long as import substitution and technological independence achievement are of great importance, we decided to employ domestic electromagnetic compatibility computer modeling system. The paper presents the results of analyzing the spacecraft autonomous navigation system real PCB bus in time domain, using various combinations of loads and active conductors. The analysis was performed by quasi-static approach embedded into TALGAT system. Cross-sections of every conductor were plotted. Ultrashort pulse of trapezoidal form with amplitude of 1 V, rise and fall times of 1 ns was selected as an excitation. Simulation was performed for 40 cases, but only six are presented as revealing the most meaningful results. Time response at 20 points along each transmission line was calculated for each of those 40 cases. This study topicality consists in revealing both maximums and minimums of the signal. Autonomous navigation system radio receiving unit PCB bus parameters were calculated. We revealed and localized voltage maximums 1.2 and 2.7 times greater than the signal amplitude at the input. In two cases, the voltage maximums were localized at the points near the lower layer conductor. The coupling between these conductors may appear to be critical. The case where two peak values presented (maximum and minimum) was revealed. It was shown also that maximum localization was not constant.

Keywords:

simulation, printed circuit board, signal maximum localization, electromagnetic compatibility, autonomous navigation system

References

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