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Triangle and Aperiodic Metasurfaces for Bistatic Backscattering Engineering

Advanced electromagnetic (EM) surfaces are commonly designed to improve wave propagation and scattering. Control of EM wave scattering is one of the important venues for metasurface as an advanced surface, in which the EM surface takes place lower space than the famous metamaterial. At the same time, advanced surfaces get the same EM features as bulk metamaterials. With a new arrangement of metasurfaces and a fully characterized solution, conspicuous bistatic backscattering reduction is achieved over a wide frequency range and incidence angle interval. Closed‐form equivalent electric circuit models are primarily obtained to describe the physical challenges. Triangular and aperiodic metasurfaces are characterized to increase union diffusions of returning field. To evaluate the principal models, numeric and fabrication solutions are performed. Thus, the achieved frequency bandwidth for 10 dB reduction in bistatic backscattering is 80%. Furthermore, this fractional bandwidth goes to 70% in the case of oblique incidence. The main novelty of this research versus the related state of art is the highest 10 dB reduction bandwidth for the bistatic radar‐cross‐section reductions with the new studied coating configurations. Meanwhile, the obtained closed‐form circuit models are suitable for other applications, such as shielding and wave path redirection.