Transient simulation using discrete-time representation of generalized frequency-dependent permittivity

Author

Su, Zhiguo ; Brazil, Thomas J. ; Yin, Xiaoxin

Author_Institution

Sch. of Electr., Electron. & Commun. Eng., Univ. Coll. Dublin, Dublin, Ireland

fYear

2011

fDate

18-19 April 2011

Firstpage

1

Lastpage

4

Abstract

A direct method for incorporating frequency-dependent permittivity into an FDTD algorithm is presented in this paper. The frequency-dependent permittivity is represented as a series of modified impulse responses using a non-uniform discrete-time technique. The modified impulse response can be applied within a convolution in FDTD algorithm for general transient analysis. The method presented here is highly accurate and stable, and is suitable for use in quite general cases, especially where the permittivity shows complicated frequency dependence.

Keywords

convolution; electromagnetic wave propagation; finite difference time-domain analysis; transient analysis; transient response; FDTD algorithm convolution; discrete time representation; generalized frequency-dependent permittivity; impulse response; nonuniform discrete time technique; transient analysis; transient simulation; Convolution; Dispersion; Finite difference methods; Frequency modulation; Permittivity; Time domain analysis; Time frequency analysis; FDTD; convolution; dispersive; permittivity; simulation; transient;

fLanguage

English

Publisher

ieee

Conference_Titel

Integrated Nonlinear Microwave and Millimetre-Wave Circuits (INMMIC), 2011 Workshop on

Conference_Location

Vienna

Print_ISBN

978-1-4577-0650-9

Type

conf

DOI

10.1109/INMMIC.2011.5773336

Filename

5773336