Accurate FDTD modelling for dispersive media using rational function and particle swarm optimisation
- Authors
- Chung, Haejun; Ha, Sang-Gyu; Choi, Jaehoon; Jung, Kyung-Young
- Issue Date
- Jul-2015
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- particle swarm optimisation; radio propagation; finite-difference time domain (FDTD) method; electromagnetic analysis; dispersive media; microwave
- Citation
- INTERNATIONAL JOURNAL OF ELECTRONICS, v.102, no.7, pp.1218 - 1228
- Indexed
- SCIE
SCOPUS
- Journal Title
- INTERNATIONAL JOURNAL OF ELECTRONICS
- Volume
- 102
- Number
- 7
- Start Page
- 1218
- End Page
- 1228
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/156876
- DOI
- 10.1080/00207217.2014.966779
- ISSN
- 0020-7217
- Abstract
- This article presents an accurate finite-difference time domain (FDTD) dispersive modelling suitable for complex dispersive media. A quadratic complex rational function (QCRF) is used to characterise their dispersive relations. To obtain accurate coefficients of QCRF, in this work, we use an analytical approach and a particle swarm optimisation (PSO) simultaneously. In specific, an analytical approach is used to obtain the QCRF matrix-solving equation and PSO is applied to adjust a weighting function of this equation. Numerical examples are used to illustrate the validity of the proposed FDTD dispersion model.
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