Treating the instabilities in marching-on-in-time method from a different perspective [electromagnetic scattering]

Author

Sadigh, Ali ; Arvas, Ercument

Author_Institution

Dept. of Electr. & Comput. Eng., Syracuse Univ., NY, USA

Volume

41

Issue

12

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

1695

Lastpage

1702

Abstract

A general method is presented to treat the instabilities which are frequently observed in the electromagnetic transient solutions using the marching-on-in-time method. The basic idea is to apply an finite impulse response (FIR) filter with a constant group delay during the course of marching-in-time. An electric field integral equation (EFIE) formulation for perfectly conducting bodies is used as a vessel to demonstrate the method. Sample numerical results are presented and discussed. The computed results, while showing good agreement with the data obtained from other methods, present great stability improvement

Keywords

digital filters; electromagnetic wave scattering; filtering and prediction theory; integral equations; numerical analysis; stability; time-domain analysis; EFIE; FIR filter; constant group delay; electric field integral equation; electromagnetic scattering; electromagnetic transient solutions; finite impulse response filter; instabilities; lowpass filter; marching-on-in-time method; numerical results; perfectly conducting bodies; time domain analysis; Conductors; Digital filters; Electromagnetic scattering; Electromagnets; Finite difference methods; Finite impulse response filter; Integral equations; Moment methods; Resonance; Stability criteria;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.273314

Filename

273314