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Unconditionally stable five‐step LOD‐FDTD method in plasma medium
Author(s) -
Feng Xuejian,
Deng Haochuan,
Wei Xiao,
Yin Hongcheng,
Yang Lixia
Publication year - 2018
Publication title -
international journal of numerical modelling: electronic networks, devices and fields
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.249
H-Index - 30
eISSN - 1099-1204
pISSN - 0894-3370
DOI - 10.1002/jnm.2522
Subject(s) - finite difference time domain method , slab , plasma , stability (learning theory) , matrix (chemical analysis) , mathematical analysis , mathematics , anisotropy , physics , optics , materials science , computer science , quantum mechanics , machine learning , geophysics , composite material
A three‐dimensional unconditionally stable five‐step locally one‐dimensional finite‐difference time‐domain (LOD‐FDTD) method for anisotropic magnetized plasma medium is presented. Firstly, we search for a diagonal matrix to transform Maxwell coefficient matrix of plasma into skew symmetric matrix which is beneficial to analyze the properties of the proposed algorithm. Then, the detailed formula derivation and numerical stability analysis is presented. At last, the resonance frequency of a microwave cavity partially filled with a plasma slab and the rotation angle of an infinite plasma slab are simulated to verify the accuracy and stability of the proposed method. The effectiveness of the proposed method is further demonstrated by comparing with the three‐step LOD‐FDTD method.