Abstract
This work deals with Intentional Electromagnetic Interference (IEMI) and presents an assessment of the statistics of disturbances induced in a wiring harness by a radiated, wideband, high-power electromagnetic (HPEM) pulse. The quantity of interest is the worst-case (i.e., maximum) peak in the time-domain waveform of the common-mode (CM) voltage, that can be induced in a terminal interface of the harness by an HPEM pulse with specified bandwidth and energy density. Statistics is needed to account for the lack of knowledge on the direction of incidence and polarization of the impinging plane-wave field, which are treated as random variables. Consequently, the worst-case induced-voltage peak is characterized, in probabilistic terms, by a cumulative distribution function (cdf). The proposed analysis puts into evidence the different influence exerted by the three most important parameters (namely, harness length, height above ground, and CM impedance of terminal loads) on the aforementioned cdf, that is, on the susceptibility of a wiring harness to IEMI.
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