Abstract
This paper presents the design of single layer metasurface for wideband radar cross section (RCS) reduction. The phase distribution across the proposed metasurface aperture is implemented using cubic phase profile. The proposed cubic phased metasurface has a sub-wavelength periodicity. In addition, the unit cell was designed according the Pancharatnam–Berry (PB) phase theory to make the proposed metasurface insensitive to the polarization of the incoming EMwave which is very important for radar stealth application. When illuminated by far-field EM-plane wave, the proposed metasurface can significantly reduce the RCS by more than 10 dB from 10 GHz to 26 GHz. The proposed cubic phased metasurface severely diffuse the backscattered energy in numerous angles in front of the metasurface. The fractional RCS reduction bandwidth (FBW) of the cubic metasurface is 88.8%, which is much wider than the FBW of metasurfaces in the literature. The proposed cubic metasurface is under fabrication and the RCS measurements are on-going.
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