Research on Simulation Algorithm of Bounded Wave Simulator Based on Nonuniform Multiconductor Transmission Lines and Electric Dipole Theory

This article analyzes the E-field response in the test volume of bounded wave simulator (BWS) in time domain (TD) based on nonuniform multiconductor transmission lines (NMTLs) and electric dipole theory. First, the transmission lines (TLs) in BWS are modeled as a NMTL system and divided into a certain number of cascaded uniform multiconductor TLs (MTLs). Second, the current distribution in frequency domain (FD) along the TLs of BWS is determined based on the theory of MTL and the chain parameter matrix (CPM) when sinusoidal continuous wave signals of different frequencies are fed into BWS. Third, the E-field at field point of the test area of BWS is calculated by summing the E-field radiated by all the currents on the TLs in BWS via the electric dipole theory. Finally, the E-field response in TD is solved via discrete Fourier transform (DFT) and inverse DFT (IDFT). The validity of the proposed algorithm is investigated by analyzing an example of BWS, which is measured experimentally. It has been shown from the established results that the proposed method leads to an effective technique for analyzing the E-field response in the test volume of BWS. Related research in this article can provide some guidance in the analysis of BWS and transient electromagnetic field radiation sensitivity test (RS 105).