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.
Shielding effectiveness of planar negative-permeability screens / Lovat, Giampiero; Celozzi, Salvatore. - ELETTRONICO. - (2008), pp. 453-458. (Intervento presentato al convegno 2008 IEEE International Symposium on Electromagnetic Compatibility tenutosi a DETROIT nel 18-22/08/2008) [10.1109/ISEMC.2008.4652085].
Shielding effectiveness of planar negative-permeability screens
LOVAT, GIAMPIERO;CELOZZI, Salvatore
2008
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
