Wideband RCS reduction using two dimensional phase gradient metasurface

摘要

In this paper, two kinds of 2D phase gradient metasurfaces (PGM) are proposed to realize wideband radar cross section (RCS) reduction. A cross and two square-rings construct the unit cell of the PGM. By changing the arrangement of the sub-array which is composed by 16 unit cells, two kinds of PGMs are realized. Due to the anomalous reflection and diffuse reflection, 10 dB RCS reduction is accomplished in a wideband range for both PGMs.