Title :
A frequency-dependent PSTD algorithm for general dispersive media
Author :
Liu, Qing Huo ; Fan, Guo-Xin
Author_Institution :
Klipsch Sch. of Electr. & Comput. Eng., New Mexico State Univ., Las Cruces, NM, USA
fDate :
2/1/1999 12:00:00 AM
Abstract :
Based on the Fourier representation of spatial derivatives, the recursive convolution approaches, and the perfectly matched layer (PML), we develop a pseudospectral time-domain (PSTD) algorithm for electromagnetic problems involving general dispersive media. As a result of the accurate representation of spatial derivatives, the PSTD algorithm for dispersive media requires only a small number of cells per minimum wavelength, significantly reducing the number unknowns. Multidimensional numerical results confirm efficacy of the PSTD algorithm for large-scale inhomogeneous media
Keywords :
convolution; dispersion (wave); dispersive media; electromagnetic wave propagation; numerical analysis; time-domain analysis; Fourier representation; PML; electromagnetic problems; frequency-dependent PSTD algorithm; general dispersive media; large-scale inhomogeneous media; perfectly matched layer; pseudospectral time-domain algorithm; recursive convolution; spatial derivatives; Convolution; Dispersion; Finite difference methods; Frequency; Large-scale systems; Multidimensional systems; Nonhomogeneous media; Perfectly matched layers; Sampling methods; Time domain analysis;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
