Simulation and Measurement of EMP Emission by Capacitor Discharge Circuits

Abstract

Numerical simulation is an effective method for evaluating electromagnetic pulse (EMP) around the capacitor discharging circuits and impulse currents in the discharging circuits. The augment electric-field integral equation (AEFIE) and time-frequency transitional method are applied to overcome low frequency collapse. Besides that, model simplification can save much simulation time under the guaranteeing precision premise. In the comparison of experiments with simulation, the periodic error and amplitude error are within 5% and 20%. More importantly, impulse currents can be derived by integrating voltages wave in the B-Dot. This simulation method based on AEFIE and time-frequency transition solves integrated simulation of capacitor discharge circuits and can be applied in designing testing probes.