Title :
Toward an effective absorber for damping resonances in shielded enclosures
Author_Institution :
DIAEE - Electr. Eng. Div., “Sapienza” Univ. of Rome, Rome, Italy
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;
Conference_Titel :
Electromagnetic Compatibility (EMC EUROPE), 2012 International Symposium on
Conference_Location :
Rome
Print_ISBN :
978-1-4673-0718-5
DOI :
10.1109/EMCEurope.2012.6396687
