An improved model for a transient surface impedance boundary condition

Author

Deeley, E.M. ; Xu, X.

Author_Institution

Dept. of Electron. & Electr. Eng., King´´s Coll., London, UK

Volume

31

Issue

3

fYear

1995

fDate

5/1/1995 12:00:00 AM

Firstpage

1674

Lastpage

1677

Abstract

An improved model for a transient version of the well known impedance boundary condition is presented using the analogy with an infinite lattice network. The input impedance for such a network is proportional to √s, where s is the Laplace variable, and thus corresponds to that required for the IBC. This is a marked improvement on models based on a ladder network, and more than halves the number of state variables required at each boundary node compared with that method. For maximum efficiency the network is truncated so that the bandwidth over which the required impedance is realized corresponds to that of the computed waveforms. The method is applied to a problem having an analytical solution

Keywords

electric impedance; electromagnetism; equivalent circuits; modelling; transient analysis; transient response; Laplace variable; circuit model; infinite lattice network; input impedance; state variables; transient surface impedance boundary condition; Bandwidth; Boundary conditions; Computer networks; Educational institutions; Equations; Frequency; Inductors; Kirchhoff´s Law; Lattices; Surface impedance;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.376357

Filename

376357