Time-domain response of bulk current injection probes to impulsive stress waveforms

This work investigates the main properties of the time-domain response of a commercial probe for bulk current injection (BCI) excited with impulsive waveforms. To this end, circuit modeling of the injection device and the calibration jig is exploited to quantify the distortion experienced by the input pulse due to the frequency-dependent behavior of the probe. Suitable feeding conditions are then identified to compensate for those effects, and assure injection of impulsive waveforms with desired characteristics. Circuit simulation of a simple setup is then used to analyze the effects on pulse shape due to cable length, probe positioning, and mismatching at the terminations of the wiring structure interconnecting the equipment under test to auxiliary equipment.