Title :
Steady-state response by time-reversal FD-TD method with Lanczos algorithm
Author :
Yi-Hsin Pang ; Ting-Yi Huang ; Ruey-Beei Wu
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Finite-difference time-domain (FD-TD) method combined with Lanczos algorithm and time-reversal technique is proposed for the steady-state response. With Lanczos algorithm, modes of FD-TD operator can be extracted efficiently. The steady-state response can then be calculated at any time by an analytic formula with a few of these modes. The existing FD-TD code needs not to be modified, except for an additionally time-reversal electric field update. An example of an air-filled cavity is demonstrated for the validation of this hybrid method.
Keywords :
Maxwell equations; computational electromagnetics; eigenvalues and eigenfunctions; finite difference time-domain analysis; Lanczos algorithm; Maxwell equation; air-filled cavity; eigenvalues; electric field updating equation; finite-difference time-domain method; hybrid method; inhomogeneous medium; modal patterns; model-order reduction; steady-state response; time-reversal technique; tridiagonal matrix; Computational modeling; Eigenvalues and eigenfunctions; Equations; Finite difference methods; Finite element methods; Matrix converters; Sparse matrices; Steady-state; Symmetric matrices; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2003. IEEE
Conference_Location :
Columbus, OH, USA
Print_ISBN :
0-7803-7846-6
DOI :
10.1109/APS.2003.1220193
