Electromagnetic Interference (EMI) Measurements for Automotive Applications

This paper discusses present electromagnetic interference (EMI) measurement techniques and some of the problems associated with EMI measurements, especially relative to automotive problems. Improved measurement techniques are then discussed, including: 1) use of isotropic probes capable of measuring unperturbed, complex fields close to their sources and 2) transverse electromagnetic transmission cells with expanded applications for both susceptibility and emission measurements. Finally, some suggestions for minimizing automotive EMI problems are given.