Title :
A general UPML FDTD absorbing boundary condition for dispersive media
Author :
Wei Bing ; Li Xiao-yong ; Ge De-biao ; Wang Fei
Author_Institution :
Dept. of Phys., Xi´dian Univ., Xi´an
Abstract :
The dispersion relation and the reflectionless condition are obtained by the Maxwell´s curl equations in a uniaxial anisotropic medium and the phase-matching. Using the shift operator finite difference time domain (SO-FDTD) method and the transform relationship of frequency domain to time domain (jomega replaced by part/partt), an FDTD absorbing boundary condition available for three kinds of general dispersive medium models, i.e. Debye model, Lorentz model and Drude model, is given. The computed results illustrate the generality and the high effectiveness of presented scheme.
Keywords :
Maxwell equations; absorbing media; anisotropic media; dispersion relations; dispersive media; electromagnetic wave absorption; finite difference time-domain analysis; Debye model; Drude model; Lorentz model; Maxwell´s curl equations; absorbing boundary condition; dispersion relation; dispersive media models; finite difference time domain method; frequency domain analysis; phase matching; reflectionless condition; shift operator FDTD method; time domain analysis; uniaxial anisotropic medium; FDTD; absorbing boundary condition; dispersive media; shift operator;
Conference_Titel :
Radar Conference, 2009 IET International
Conference_Location :
Guilin
Print_ISBN :
978-1-84919-010-7
