Title :
IIR filter implementation of dispersive medium using Z-transform
Author :
Shakibaei, Barmak Honarvar ; Shawon, Md Jubayer ; Shee Yu Gang ; Adikan, F.R.M.
Author_Institution :
Electr. Eng. Dept., Univ. Malaya, Kuala Lumpur, Malaysia
Abstract :
The Z-transform method for modeling the dispersive media is analyzed mathematically. The most complicated part of modeling of this medium is to find a relationship between the flux densities and the field intensities. Because of the simplicity of the finite difference in time-domain, this relationship can be looked upon as a digital filtering issue. In this paper, the Z-transform is used to incorporate the dispersive medium constitutive relations into the frequency algorithms. An IIR filter structure is designed to show the non-linear behavior of the frequency dependent permeability of materials using properties of the Z-transform.
Keywords :
IIR filters; dispersive media; finite difference time-domain analysis; IIR filter; Z-transform; digital filtering; dispersive medium; field intensities; finite difference time-domain method; flux densities; frequency dependent permeability; nonlinear behavior; Dispersion; Finite difference methods; Frequency-domain analysis; Mathematical model; Media; Permeability; Time-domain analysis; Dispersive media; IIR filter; Z-transform; finite-difference time-domain;
Conference_Titel :
Photonics (ICP), 2014 IEEE 5th International Conference on
Conference_Location :
Kuala Lumpur
DOI :
10.1109/ICP.2014.7002358
