Wideband Transmission/Absorption Switchable Metasurface with Dual-Polarization

The reconfigurable frequency selective rasorber has the ability to switch its transmission band into absorption band and thus, has the potential to mitigate the contradiction between radar detection and radar stealth. However, the increasing complication of the feeding circuit of the active elements make it difficult to improve a frequency selective rasorber from narrowband to wideband transmission, as well as from single to dual polarization. In this paper, we proposed a dual-polarized metasurface with switchable transmission/absorption covering the X band. The unit cell design and feeding strategy of the proposed metasurface are discussed in detail. Simulation shows an 8–12 GHz transmission and absorption switch ability with good angular stability and polarization insensitivity is achieved, which is the key function to realize the dual-polarized frequency selective rasorber with wideband transmission.