Modeling of electromagnetic interference induced by electrostatic discharge (ESD) inside resonant structures

This paper presents an accurate analysis of the effects produced by electrostatic discharge (ESD) inside a metallic enclosure, representing the metallic shield of an apparatus. The considered discharges are either directly generated inside the cavity or guided into the enclosure through a transmission line. The model, which makes use of a modal approach for the calculation of the electromagnetic (EM) field inside the cavity, evaluates the disturbance induced by the different kinds of ESDs on a victim line. The results both in the frequency and time domain have been validated by experimental measurements and highlight the effects of the resonant nature of the structure on the intensity and the duration of the disturbance.