Numerical analysis of diffracting perforated shields

Author

Angeli, Marco ; Cardelli, Ermanno

Author_Institution

Ist. di Energetica, Perugia Univ., Italy

Volume

33

Issue

2

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

1472

Lastpage

1475

Abstract

This paper deals with the numerical analysis of the behavior of diffracting perforated shields, and in particular of honeycomb structures. The diffracting perforated shield consists of a matrix of metallic waveguides, and its shielding effectiveness depends on the size, the length and the number of waveguides. For the numerical computation a Yee´s (1966) finite difference algorithm with Mur´s (1981) absorbing boundary conditions is employed. A particular technique allows one to limit the spatial dimension of the simulating grid, suitably taking into account the external field source. The computed results show the effectiveness and the accuracy of the method

Keywords

electromagnetic interference; electromagnetic shielding; electromagnetic wave absorption; electromagnetic wave diffraction; finite difference time-domain analysis; waveguide theory; EMI; absorbing boundary conditions; accuracy; diffracting perforated shields; external field source; finite difference time domain algorithm; honeycomb structures; metallic waveguides; numerical analysis; radiated energy; simulating grid; spatial dimension; Apertures; Attenuation; Conductors; Cutoff frequency; Diffraction; Electromagnetic waveguides; Electronic equipment; Geometry; Honeycomb structures; Numerical analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.582538

Filename

582538