Modulation Characteristics of Active Frequency Selective Surface Trihedral Corner Reflector

The conventional passive jamming devices such as corner reflectors and chaffs cannot achieve the flexible modulation of radar signal for their fixed scattering cross section. As a passive material, active frequency selective surface (FSS) can dynamically control their electromagnetic characteristics and has been widely applied in the radar target stealth field. In this paper, a radar signal modulation method is proposed based on active FSS trihedral corner reflector. The scattering characteristics and modulation principle of active FSS trihedral corner reflector are analyzed in detail. The effectiveness of the design is demonstrated by simulation results. This design provides a new and efficient method of radar signal modulation