The problem and treatment of DC offsets in FDTD simulations

Author

Furse, Cynthia M. ; Roper, Daniel H. ; Buechler, Dale N. ; Christensen, Douglas A. ; Durney, Carl H.

Author_Institution

Dept. of Electr. & Comput. Eng., Utah State Univ., Logan, UT, USA

Volume

48

Issue

8

fYear

2000

fDate

8/1/2000 12:00:00 AM

Firstpage

1198

Lastpage

1201

Abstract

This paper discusses the causes of and some solutions to the commonly observed problem of DC field offsets in finite-difference time-domain (FDTD) simulations. DC electric and magnetic field offsets are shown to be valid calculated responses of the modeled systems, resulting from interaction between the turn-on characteristics of the source and the properties of the models. The DC offsets may be avoided in the time domain by tailoring the source waveforms or in the frequency domain by post-processing the FDTD output.

Keywords

Maxwell equations; conducting bodies; digital simulation; electric fields; finite difference time-domain analysis; magnetic fields; DC electric field offset; DC magnetic field offset; DC offsets; FDTD output post-processing; FDTD simulations; Maxwell´s equations; finite-difference time-domain simulations; nonoscillating currents; perfectly conducting infinite circular cylinder; plane wave illumination; source turn-on characteristics; source waveforms; time-varying source fields; Circuit simulation; Engine cylinders; Finite difference methods; Frequency domain analysis; History; Magnetic fields; Magnetic properties; Maxwell equations; Surface treatment; Time domain analysis;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.884487

Filename

884487