Measurement of the magnetic field radiating by electrostatic discharges during the verification of the ESD generators

This work aims to investigate the transient magnetic field radiating by two commercial generators of electrostatic discharges. Near field measurements have been conducted, a few centimetres away from the discharge point (Pellegrini target). The Pellegrini target is mounted in the centre of a grounded metal plane, inside an anechoic chamber. The measurements are performed in three different directions in relation to the discharge direction. The experimental data show that each ESD generator produces a different transient magnetic field. Furthermore, additional differences in the magnetic field produced by each generator are noted, depending on the direction of the measurement. Finally, comparisons concerning the magnetic field produced by each generator as well as useful conclusions for the decrease of the magnetic field are presented.