Abstract
In this article a circuit level analytic approach is proposed for radiated susceptibility analysis of a system power distribution network (PDN). For this purpose, electromagnetic wave impacts a two-layer printed circuit board (PCB). This external wave can be radiated from the antenna of a wireless communication device or an intentional electromagnetic interference source. The radiated susceptibility of the PDN is studied by decomposing the stochastic voltage sources for vertical and horizontal transmission lines. The effect of distribution network on the individual induced signal are considered using ABCD matrix for handling the disturbance propagation entire system. The PDN self voltage fluctuation is considered using a simple mathematic model. A measurement procedure is proposed for evaluating the performance degradation without loading effect. Analytic conclusion and simulation results disclose that the induced voltage from external electromagnetic threat on the PDN is comparable with the operating PDN self fluctuation. The results show that the PDN is a susceptible section of the PCB and is an accessible target for interferer systems. This can be a potential susceptibility concern and should be considered in design procedure.
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