EMP Coupling Analysis Using the Frequency (Transfer Function) Method with the SCEPTRE Computer Program

The availability of digital computer time and scientific programming languages (such as Fortran) has, resulted in the use of the digital computer for electromagnetic pulse (EMP) coupling analyses. This report describes combining complex frequency domain analysis techniques with the SCEPTRE computer program to evaluate the time response of the current induced on a thin-wire scatterer when the scatterer has been excited by an arbitrary shaped electromagnetic pulse. The method is illustrated by performing an analysis for the current which would be induced by a fast rise time EMP (unit step) and a relatively slow rise time EMP (waveshape similar to that produced by a lightning stroke).