A Method to Suppress Radiated Noise of ARINC659

摘要

In this paper, a suppression method is proposed from the aspects of principle design, PCB design and structure design to address the issue of radiated noise caused by the use of ARINC659 bus in spaceborne electronic equipments. Through the actual test and analysis, it is concluded that the effective methods to reduce the periodic radiated noise are to ensure the independence of the strong radiated signal and prevent the coupling of the propagation path. Especially for RE102, the effect is very obvious. In order to solve these problems, it provides an effective method. In the future, if further suppression of the radiated noise is desired, a systematic thinking is needed, starting with the scheme design stage to clarify the user requirements, and in terms of component selection, should be appropriately decreased based on the selection principle of good enough to minimize the radiated source and radiated intensity.