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We demonstrated that the three-dimensional metamaterial absorbers, consisting of the resistive patches and metallic backboard, can exhibit ultra-broadband and highly efficient absorption for a certain larger incidence of the transverse magnetic wave. The three-dimensional unit cell is constructed by bending the resistive patches, which is arranged at a certain period on the metal plate. Comparing...
In this letter, the research on the thickness resonance of the dielectric materials using high-permittivity dielectrics is proposed based on effective medium theory. Unlike conventional bandpass FSSs, such FSS is composed of high-permittivity dielectrics plates rather than metallic or dielectric materials with structures. Strong electric and magnetic resonances are introduced to produce drastic changes...
This paper presents a double-layer resistive FSS absorber consists of resistive film patches and polyurethane foam. The absorber has ultra-wideband microwave absorption with the characteristic of polarization-independent and incident-angle-insensitive. The equivalent circuit theory is employed to analysis the working mechanism of the absorber. It is shown through the simulation that the fractional...
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