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Thin metasurface absorbers with stable absorbing frequency in the oblique incident angles have been required. This paper presents the bistatic RCS reduction characteristics of the flat and curved metasurfaces in TE incidence wave. In both flat and curved metasurfaces, when the incident angle increases, the absorbing frequency shifts to higher. However, the RCS reduction decreases as the incident angle...
The wave absorbers composed of a periodic structure of the electromagnetic bandgap structures have been investigated in order to suppress the interference. Thin metasurface wave absorbers with stable operation for absorbing frequency at oblique incident angle have been required. Typical unit cell configurations for the metasurfaces are mushroom structure and spiral structure. In this paper, the monostatic...
Thin wave absorbers composed of a periodic structure of metal patches have been investigated in order to reduce the radar cross section (RCS). To achieve stable operation for absorbing frequency at oblique incident angles, a high value of permittivity of the substrate or a very thin substrate are required. This paper presents the RCS reduction characteristics of a metasurface absorber with 0.1-mm...
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