Shielding effectiveness of planar negative-permeability screens

Author

Lovat, Giampiero ; Celozzi, Salvatore

Author_Institution

Dept. of Electr. Eng., La Sapienza Univ. of Rome, Rome

fYear

2008

fDate

18-22 Aug. 2008

Firstpage

1

Lastpage

6

Abstract

A planar screen made of a periodic array of small resonant particles showing a strong magnetic resonance is studied in detail. Two types of inclusions are considered: the double split-ring resonator (SRR) and the spiral resonator (SR). The homogenized screen is shown to behave as a homogeneous slab with an effective magnetic permeability having large positive or negative values around the magnetic resonance of the particle, giving rise to selective shielding properties. The shielding performance of the screen are investigated, and the effects of several geometric parameters are carefully evaluated through an equivalent-circuit representation of the single particle and full-wave simulations.

Keywords

equivalent circuits; magnetic permeability; magnetic resonance; magnetic shielding; equivalent-circuit representation; full-wave simulations; homogeneous slab; magnetic permeability; magnetic resonance; periodic array; planar negative-permeability screens; planar screen; resonant particles; shielding effectiveness; spiral resonator; split-ring resonator; Equivalent circuits; Magnetic fields; Magnetic materials; Magnetic particles; Magnetic resonance; Permeability; Polarization; Resonant frequency; Solid modeling; Spirals;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2008. EMC 2008. IEEE International Symposium on

Conference_Location

Detroit, MI

Print_ISBN

978-1-4244-1699-8

Electronic_ISBN

978-1-4244-1698-1

Type

conf

DOI

10.1109/ISEMC.2008.4652085

Filename

4652085