Bistatic RCS reduction characteristics of flat and curved metasurfaces

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 increases. In addition, the curved metasurface shows similar RCS reduction characteristics to those of the flat metasurface.