Title :
Modeling Debye dispersive media using efficient ADI-FDTD method
Author :
Heh, Ding Yu ; Tan, Eng Leong
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
This paper presents an efficient, 3-D alternating-direction-implicit finite-difference time-domain (ADI-FDTD) method for modeling wave propagation in Debye dispersive media. The efficient algorithm features a simpler, matrix-operator-free right hand side than the conventional ADI-FDTD method which results in substantial reduction of floating point operations (flops) counts and memory indexing. Formulation of update equations are shown and numerical results are performed to illustrate the accuracy and efficiency of such efficient algorithm.
Keywords :
dispersive media; electromagnetic wave propagation; finite difference time-domain analysis; matrix algebra; 3D alternating-direction-implicit finite-difference time-domain method; ADI-FDTD method; Debye dispersive media modeling; floating point operation; matrix operator; memory indexing; update equation; wave propagation modeling; Arithmetic; Dispersion; Finite difference methods; Frequency; Indexing; Maxwell equations; Permittivity; Stability; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5172058