Open AccessUnified split‐step precise integration time‐domain method for dispersive media
Author(s) -
Liu Qi,
Ma Xikui,
Chen Feng
Publication year - 2013
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2013.2101
Subject(s) - computer science , time domain , electronic engineering , algorithm , materials science , engineering , computer vision
Based on the use of auxiliary differential equations, a unified split‐step precise integration time‐domain (SS‐PITD) method is proposed for modelling wave propagation in linear dispersive media. The unification of this method is achieved by using a general expression to represent the Debye, Lorentz and Drude dielectric medium models. Moreover, due to the introduction of the SS scheme, the original two‐dimensional (2D) or 3D electromagnetic problem reduces to a set of 1D sub‐problems which can be efficiently solved by using the conventional PITD algorithm. It leads to a great reduction in the requirement of computation time and storage space. The proposed method is verified with a numerical example and compared with the finite‐difference time‐domain method.