Abstract
At present, the existing electromagnetic interference (EMI) analysis methods for the cavity with transmission lines (TLs) often need a large number of meshes to satisfy certain accuracy, which would seriously affect the calculation time, memory, and efficiency. Therefore, this paper presents a time-domain parallel method consisting of finite-difference time-domain method, TL equations, and message passing interface library. This method has two obvious advantages: one is that it does not need to mesh the TLs, which can reduce a lot of computational memory; and the other is that it can run on multiple processors or computers to save a lot of computational time. In order to verify the accuracy and validity of this method, the intracavity transmission of multiconductor TLs and coaxial cable under ambient wave excitation is simulated numerically and compared with the traditional method. The results show that the method can be well applied for the EMI analysis of the TLs in cavity under ambient excitation.
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