Subcell FDTD Modeling of Field Penetration Through Lossy Shields

Author

Feliziani, M.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of L´´Aquila, L´´Aquila, Italy

Volume

54

Issue

2

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

299

Lastpage

307

Abstract

A new subcell finite-difference time-domain model is presented to solve shielding problem. The field penetration through the nonperfectly conductive shield is modeled by two-port network equations in terms of frequency-dependent admittances which are rationalized by the vector fitting procedure. The resulting equations are used to synthetized an equivalent linear time invariant circuit which is analyzed directly in time domain without using convolution equations. This important aspect is the main novelty of the proposed procedure.

Keywords

absorbing media; electromagnetic fields; electromagnetic shielding; equivalent circuits; finite difference time-domain analysis; network synthesis; two-port networks; equivalent linear time invariant circuit synthesis; field penetration; frequency-dependent admittance; lossy shields; nonperfectly conductive shield; subcell FDTD modeling; subcell finite-difference time-domain model; two-port network equations; vector fitting; Convolution; Equations; Finite difference methods; Impedance; Integrated circuit modeling; Mathematical model; Time domain analysis; Circuit modeling; finite difference (FD); finite-difference time-domain (FDTD) methods; impedance network boundary conditions (INBC); shielding; subcell method;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/TEMC.2011.2160982

Filename

5989857