Explicit temporal integrators for low-pass filtering of FDTD signals

Author

Spachmann, Holger ; Schuhmann, Rolf ; Setzer, Stefan ; Weiland, Thomas

Author_Institution

Computational Electromagneties Lab., Tech. Univ. Darmstadt, Germany

Volume

1

Issue

1

fYear

2002

fDate

6/24/1905 12:00:00 AM

Firstpage

150

Lastpage

153

Abstract

The numerical dispersion properties of some higher order explicit marching-on-in-time methods for transient electromagnetic field simulations are investigated. In contrast to the most commonly used leapfrog time integration scheme, these alternative methods exhibit a numerical dissipation for high-frequency components. This property can be interpreted as a low-pass digital filter and exploited to suppress parasitic high-frequency noise (HF noise) in the field signals. The prospective application is the enhancement of the coupled simulation of electromagnetic fields and moving charges.

Keywords

computational electromagnetics; digital filters; electromagnetic field theory; finite difference time-domain analysis; integrating circuits; integration; interference suppression; low-pass filters; numerical stability; random noise; transient analysis; FDTD signals; HF noise; electromagnetic fields; explicit marching-on-in-time methods; explicit temporal integrators; higher order marching-on-in-time methods; leapfrog time integration scheme; low-pass digital filter; low-pass filtering; moving charges; numerical dispersion properties; numerical stability; parasitic high-frequency noise; transient electromagnetic field simulations; Electromagnetic fields; Electromagnetic transients; Filtering; Finite difference methods; Finite impulse response filter; Frequency; Hafnium; Low pass filters; Stability; Time domain analysis;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2002.807571

Filename

1167254