A novel ultra-broadband Polarization Rotation (PR) Reflective Surface (PRRS) is presented, which can reflect the linearly polarized incident wave in orthogonal polarization state. The proposed PRRS consists of a periodic array of double split ring patches printed on a substrate, which is backed by a metallic ground. A PRRS composed of circular split ring units can realize polarization rotation in two wide frequency bands. When two circular split rings with gradual radii are arranged concentrically, an ultra-broadband polarized rotation will be obtained. This paper explains the mechanism of polarization rotation and the mechanism of Radar Cross Section (RCS) reduction and studies the influence of structural parameters on the polarization rotation frequency band. Simulation results show that a 101.6% PR bandwidth is achieved. Meanwhile, by arranging the unit cells of the PRRS in four orthogonal directions, the monostatic RCS reduction band ranges from 8 GHz to 21.8 GHz (or 92.6%) for arbitrary polarization of the incident wave.
"Design of an Ultra-Broadband Polarization Rotating Reflective Surface for the Reduction of Radar Cross Section," Progress In Electromagnetics Research M,
Vol. 114, 69-78, 2022. doi:10.2528/PIERM22062705
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