Toward an effective absorber for damping resonances in shielded enclosures

Author

Araneo, Rodolfo

Author_Institution

DIAEE - Electr. Eng. Div., “Sapienza” Univ. of Rome, Rome, Italy

fYear

2012

fDate

17-21 Sept. 2012

Firstpage

1

Lastpage

6

Abstract

A procedure for the design of compact and lightweight absorbing material for damping resonances inside shielded enclosure is presented. The proposed absorber is based on the concept of the Jaumann layers and the circuit analog absorbers, since it employs four layers of lossy (artificial) dielectrics separated by two high/low impedance frequency selective surfaces and one resistive sheet. The constitutive parameters of the absorber are optimized by means of the Particle Swarm Optimization in order to maximize its bandwidth and absorption rate in the frequency range centered around 1 GHz, where the first resonances of small commercial enclosures take place.

Keywords

absorbing media; damping; electromagnetic shielding; packaging; particle swarm optimisation; Jaumann layers; artificial dielectrics; circuit analog absorbers; compact absorbing material design; damping resonances; high impedance frequency selective surfaces; lightweight absorbing material design; lossy dielectrics; low impedance frequency selective surfaces; particle swarm optimization; resistive sheet; shielded enclosures; Apertures; Dielectric losses; Impedance; Materials; Resonant frequency; Surface impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility (EMC EUROPE), 2012 International Symposium on

Conference_Location

Rome

ISSN

2325-0356

Print_ISBN

978-1-4673-0718-5

Type

conf

DOI

10.1109/EMCEurope.2012.6396687

Filename

6396687