TY - JOUR AU - 정경영 DA - 2015/07 PY - 2015 UR - http://www.tandfonline.com/doi/abs/10.1080/00207217.2014.966779 UR - http://hdl.handle.net/20.500.11754/26543 AB - 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. PB - TAYLOR & FRANCIS LTD KW - particle swarm optimisation KW - radio propagation KW - finite-difference time domain (FDTD) method KW - electromagnetic analysis KW - dispersive media KW - microwave TI - Accurate FDTD modelling for dispersive media using rational function and particle swarm optimisation VL - 102 DO - 10.1080/00207217.2014.966779 T2 - INTERNATIONAL JOURNAL OF ELECTRONICS ER -