Title :
Recent developments in QCRF-FDTD modeling of complex dispersive media
Author :
Sang-Gyu Ha ; Kyung-Young Jung
Author_Institution :
Dept. of Electron. Comput. & Eng., Hanyang Univ., Seoul, South Korea
Abstract :
We discuss recent developments in a finite-difference time domain (FDTD) algorithm for electromagnetic wave interaction with complex dispersive media, based on a quadratic complex rational function (QCRF). The QCRF is simple and accurate to consider frequency dispersive responses. Compared to the Debye, Drude, or Lorentz dispersion equation, the QCRF equation has more degrees of freedom and it is straightforward to implement update equations for QCRF-FDTD. We also discuss efficient memory storage of QCRF-FDTD by using a state-space approach.
Keywords :
dispersive media; electromagnetic wave propagation; finite difference time-domain analysis; frequency response; rational functions; state-space methods; FDTD algorithm; Lorentz dispersion equation; QCRF-FDTD modeling; complex dispersive media; electromagnetic wave interaction; finite- difference time domain; frequency dispersive responses; quadratic complex rational function; state-space approach; Dispersion; Electromagnetic scattering; Equations; Finite difference methods; Mathematical model; Media; Time-domain analysis; FDTD; dispersion;
Conference_Titel :
Electromagnetics (iWEM), 2014 IEEE International Workshop on
Conference_Location :
Sapporo
DOI :
10.1109/iWEM.2014.6963739
