Journal
INTERNATIONAL JOURNAL OF ELECTRONICS
Volume 102, Issue 7, Pages 1218-1228Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207217.2014.966779
Keywords
particle swarm optimisation; radio propagation; finite-difference time domain (FDTD) method; electromagnetic analysis; dispersive media; microwave
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Funding
- Basic Research Program through National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology [NRF-2012R1A1A1015159]
- KCC (Korea Communications Commission), Korea [KCA-2011-11911-01109]
- Korea Communications Agency (KCA) [11-911-01-109] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2012R1A1A1015159] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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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