Deleterious effects of coupled transients events into miniaturized circuit components
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Electromagnetic pulses (EMP) can be very destructive and protecting against them is crucial. This paper discusses a method to determine the effects an intentional EMP would have on an electrical system with multiple layers of different materials by simulating in ANSYS HFSS the exposure to electromagnetic waves. The electrical system used in these simulations is a hot-wire detonator. Although complex, it is generic enough to apply knowledge gained from analysis to other systems. It was selected because it is a known system with EMP susceptibilities. As stated the results of these simulations can be extrapolated to other systems with a small wire surrounded by a dielectric. This method will provide an efficient technique to determine the compatibilities of a system to EMPs. Worst case scenarios are tested by applying wavelengths that result in a resonant frequency through the object. The results show the magnitude of the current densities at the surface of the object induced by the EMP waves. The impact of the waves can be determined by reviewing the current density induced by the waves on the system.