Cylinder scattering pattern manipulation for dual-polarized radar cross-section reduction using inhomogeneous metasurface

Passive phase-cancellation method for radar cross-section (RCS) reduction is widely investigated in research works, but no care is taken about the resulting scattering pattern from the coated target. In this paper, a method is suggested, for the first time, to manipulate the scattered field pattern and RCS of a cylindrical structure for both polarizations of the incident wave using inhomogeneous metasurface. Scattering pattern manipulation is done by implementing the behavior of the virtual incident field that results in the desired scattered field. In spite of absorbers, which need resonance and matching conditions, there is only one design condition for the proposed method. The validity of the proposed method is verified using the simulation of several prototypes. The simulation results show a -10 dB reflectivity bandwidth of 15 percents in 10 GHz for both polarizations. The proposed method can have wide applications including RCS manipulation of military targets.