Anticipating Full Vehicle Radiated EMI from Module-Level Testing in Automobiles

Geping Liu
Chingchi Chen
Yuhua Tu
James L. Drewniak, Missouri University of Science and Technology

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EMI due to common-mode currents on cables routed in automobiles was studied using a test device designed to mimic a vehicle. Both experimental work and finite-difference time-domain (FDTD) modeling were employed in this paper. The good agreement between the measurements and modeling results indicates that the numerical tools can be a useful aid in predicting vehicle-level EMI by developing vehicle transfer functions and measuring the module-level EMI characteristics on the bench top.