Numerical Stability and Accuracy of CCPR-FDTD for Dispersive Medi
- Title
- Numerical Stability and Accuracy of CCPR-FDTD for Dispersive Medi
- Author
- 정경영
- Keywords
- Dispersive media; finite-difference time-domain (FDTD) methods; numerical analysis; numerical stability
- Issue Date
- 2020-11
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Citation
- IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, v. 68, no. 11, page. 7717-7720
- Abstract
- The complex-conjugate pole-residue (CCPR) model has been popularly adopted because CCPR-finite-difference time domain (FDTD) can reduce the memory requirement with the help of complex conjugate property of auxiliary variables. To fully utilize CCPR-FDTD, it is of great necessity to investigate its numerical stability since the FDTD method is conditionally stable. Nonetheless, the numerical stability conditions of CCPR-FDTD have not been studied because its derivation is not straightforward. In this communication, the numerical stability conditions of CCPR-FDTD are systematically derived by combining the von Neumann method with Routh-Hurwitz criterion. It is found that the numerical stability conditions of CCPR-FDTD are the same as those of the modified Lorentz-FDTD with bilinear transform. Moreover, the numerical accuracy of CCPR-FDTD is studied, and numerical examples are employed to validate this work.
- URI
- https://ieeexplore.ieee.org/document/9082879/https://repository.hanyang.ac.kr/handle/20.500.11754/172633
- ISSN
- 0018-926X; 1558-2221
- DOI
- 10.1109/TAP.2020.2990281
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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