Abstract
In order to analyze the electromagnetic coupling path of real complex electronic system in high power microwave more conveniently and effectively, based on the electromagnetic topology theory, a signal flow graph drawing and simplification method based on coupling port is proposed, and the assignment principle of coupling path are given. The new method can satisfy the construction of signal flow graph in high power microwave environment with multiple interference sources and different bandwidths. Furthermore, aiming at the bidirectional coupling problem of signal flow graph and the shortest path calculation problem under different limit encountered in practical engineering application, this letter proposes an improved Floyd algorithm combined with double-sweep algorithm, which can solve the deficiency of traditional Dijkstra algorithm and Ford algorithm in solving the above engineering problems. Finally, the coupling path analysis method under the action of multiple interference sources is briefly discussed. The method proposed in this letter is more suitable for practical engineering, and it’s the base of the further electromagnetic protection work.
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