SOME CONSIDERATIONS ON THE USE OF NEC FOR COMPUTING EMP RESPONSE

Abstract

This paper concerns the use of a frequency domain code such as the Numerical Electromagnetics Code (NEC) for computing the time domain EMP response of structures such as antennas, aircraft or communication shelters. The effects of the choice of a proper model for the excitation and of the selection of an appropriate number of frequencies for taking an inverse FFT and obtaining a correct time domain EMP response are studied. Guidelines are given for obtaining a correct time domain response with efficient use of computer time. [Vol. 4, No. 2, pp. 73-89 (1989)]