Abstract
In this paper we analyze the stability and the accuracy of finite-difference time-domain (FDTD) algorithms using Z-transform technique. Conventional time-staggered approximation of the time-derivative is replaced by a rational transfer function discrete-time filter. Then a generalized formulation of the FDTD time-stepping is presented. Finally, we show that it is possible significantly reduce the time-sampling error of FDTD algorithm by properly choosing the transfer function coefficients.
Original language | English (US) |
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Pages (from-to) | 2950-2954 |
Number of pages | 5 |
Journal | IEEE Transactions on Antennas and Propagation |
Volume | 52 |
Issue number | 11 |
DOIs | |
State | Published - Nov 2004 |
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
Keywords
- Finite-difference time-domain (FDTD) methods
- Z-transforms