Title :
An Explicit and Unconditionally Stable FDTD Method for Electromagnetic Analysis
Author :
Gaffar, Md ; Dan Jiao
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
In this paper, an explicit and unconditionally stable finite-difference time-domain (FDTD) method is developed for electromagnetic analysis. Its time step is not restricted by the space step, and its accuracy is ensured for the time step chosen based on accuracy. The strength of the conventional explicit FDTD is thus preserved in avoiding a system matrix solution, while the shortcoming of the conventional FDTD is eliminated in the time step´s dependence on space step. Numerical experiments in both 2-D and 3-D simulations have demonstrated the performance of the proposed method in stability and efficiency without sacrificing accuracy.
Keywords :
computational electromagnetics; finite difference time-domain analysis; 2D simulations; 3D simulations; electromagnetic analysis; explicit FDTD; explicit stable finite-difference time-domain method; Accuracy; Eigenvalues and eigenfunctions; Equations; Finite difference methods; Stability analysis; Time-domain analysis; Vectors; Explicit methods; finite-difference time-domain (FDTD) method; unconditionally stable methods;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2014.2358557