Spice Modeling of Probes for Pulse Current Injection

In this paper, a SPICE model of a typical nanocrystalline core used for the manufacturing of pulse current injection probes is presented. The model aims at accounting for the frequency response of the material initial complex permeability spectra (small-signal model) as well as for possible saturation occurring within the magnetic core due to the injection of high-amplitude stress waveforms. Strengths and limitations of the proposed prediction model are assessed versus time-domain measurement of the voltage induced at the terminations of the wiring structure under test, when a damped-sinusoidal waveform is injected at the core input port.