Delta system transfer function model for IEMI time domain test

Intentional electromagnetic interference (IEMI) is a serious threat to the stable operation of computer and other intelligent terminal equipment. For testing research on IEMI, it very important build reliable test system model for accurate analysis data. In time-domain z-domain discrete transfer function usually used describe response characteristics system. However, with change sampling frequency, parameters z -domain should accordingly, which leads inconvenience in modeling this paper, δ constructed by transformation from -domain. And has better stability at high rate can be approximately equivalent continuous-time domain.