Study on the properties of the two-dimensional curved surface metamaterial

Metamaterials become a breakthrough technology due to their potential applications. We numerically investigate the properties of the two-dimensional curved surface metamaterial in the microwave regime. Unlike one-dimensional planar metamaterial, some novel properties are stimulated in the designed two-dimensional curved surface metamaterial. The reflected wave is transformed into its orthogonal polarization wave in addition to the absorbing components for normal linearly polarized electromagnetic wave incidence. The polarization conversion ratio and absorption are discussed detailly under different oblique incident conditions both in transverse electric wave and transverse magnetic wave. The reflections are stable for transverse magnetic wave while changing obviously for transverse electric wave when the incident angle changes from 0° to 60°. The tendency of reflections is almost consistent when the polarization angle changes from 0° to 45° under normal incidence. We also discuss the influences of the geometric parameters on the properties of the two-dimensional curved surface metamaterial. The designed two-dimensional curved surface metamaterial can be a very potential candidate for the radar scattering section reduction and electromagnetic stealth.