Dual-Wideband Metasurface for Radar Cross Section Reduction

In this paper, a stacked metasurface has been developed to achieve dual-band radar cross section (RCS) reduction. Two subarrays with polarization conversion characteristic are designed to operate in two wide bands, respectively. By sandwiching the low-pass frequency selective surface (FSS) between two metasurface subarrays, the resultant subarray has the dual-band polarization conversion performance. With the arrangement of the dual-band subarray into a 2-by-2 array in a rotation way according to the polarization cancellation, the resultant metasurface structure has two −10dB RCS reduction bands covering 6.6~12.7 GHz and 27.8~38.1 GHz.