Open Access3‐D low numerical dispersion WLP‐FDTD method with artificial anisotropy parameters
Author(s) -
Liu GuiYing,
Ma Ping,
Tian Jing,
Quan Jun,
Chen WeiJun
Publication year - 2022
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12397
Subject(s) - finite difference time domain method , laguerre polynomials , dispersion (optics) , monochromatic electromagnetic plane wave , anisotropy , mathematics , approximation error , computer simulation , mathematical analysis , time domain , monochromatic color , finite difference method , optics , physics , computer science , statistics , computer vision
Based on the weighted Laguerre polynomials (WLPs) and artificial anisotropic (AA) parameters, a 3‐D unconditionally stable finite‐difference time‐domain (FDTD) electromagnetic simulation approach is proposed. The implementation of WLPs in time domain effectively eliminates the time step and AA parameters in spatial difference, resulting in suppressed numerical dispersion error. The monochromatic wave is employed as an example to obtain the numerical dispersion relationship of 3‐D AA‐WLP‐FDTD under AA parameter, in which reduced numerical dispersion error is observed. Compared with the conventional WLP‐FDTD technique, this approach demonstrates smaller numerical dispersion error under similar calculation cost.