Title :
The nonstandard FDTD method using a complex formulation
Author :
Taguchi, Kenji ; Ohtani, Tadao ; Kashiwa, Tatsuya ; Kanai, Yasushi
Author_Institution :
Kitami Inst. of Technol., Japan
fDate :
3/1/2004 12:00:00 AM
Abstract :
In this paper, a complex nonstandard finite-difference time-domain (CNS-FDTD) method is proposed in order to simulate wave propagation in lossy media. To clarify the characteristics of the method, expressions for the numerical propagation constant and the stability condition are derived. It is found that the CNS-FDTD method is much more accurate and stable than the conventional finite-difference time-domain (FDTD) method. The method is applied to the analysis of a fin ferrite electromagnetic wave absorber with a periodic structure.
Keywords :
electromagnetic wave absorption; electromagnetic wave propagation; ferrite devices; finite difference time-domain analysis; stability; complex formulation; ferrite electromagnetic wave absorber; finite-difference time-domain; lossy media; nonstandard FDTD method; numerical propagation; phase error; stability condition; wave propagation; Difference equations; Electromagnetic analysis; Electromagnetic scattering; Ferrites; Finite difference methods; Frequency; Propagation constant; Propagation losses; Stability; Time domain analysis;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2004.825011
