%0 Journal Article
%A JIA Rui
%A WANG Lian-dong
%A ZENG Yong-hu
%A WANG Chuan-chuan
%T A Numerical Algorithm for the Transient Response of A Frequency-Dependent Transmission Line System Excited by EMP
%D 
%R 10.13190/j.jbupt.2019-080
%J Journal of Beijing University of Posts and Telecommunications
%P 52-58
%V 43
%N 2
%X In the calculation of transmission line systems response to electromagnetic pulse (EMP), the frequency-dependent effect of terminated loads should be considered. A numerical algorithm for a transmission line system terminated with frequency-dependent loads exposed to EMP is proposed. Firstly, the amplitude-frequency characteristics and phase-frequency characteristics of frequency-dependent loads are captured by vector network analyzer. Then the measured data are expressed by a series of rational formulas based on residuals and poles derived by vector fitting (VF) method. Lastly discrete equations for the system are derived based on finite-difference time-domain (FDTD) method. In the proposed algorithm, piecewise linear recursive convolution technique is employed to simplify the computation of convolution formulas. The simulated results show a well consistency with the theory. Compared the other algorithm, this method increases the efficiency and accuracy, and has a broad application prospect in frequency-dependent systems.
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2019-080