Affiliation of Author(s):电子信息工程学院
Journal:INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING
Key Words:chessboard structure metasurface phase gradient phase variation RCS reduction
Abstract:In this article, wideband radar cross section (RCS) reduction metasurface is proposed. The unit of the metasurface is consisted of a noncentral symmetry hexagon patch with 2 semi-circular slots at the symmetric corners. As a result, the unit has an anisotropic response for x- and y-polarized wave. The reflection phase is varied with the radius of slots. The range of phase variation is extended by rotation of the unit with 90 degrees. According to the generalized Snell's Law, 4 different phase gradient supercells with dual polarization characteristics and different gradient directions are obtained. To improve the RCS reduction, chessboard structure is used. By combining these 2 technological approaches, a wideband, polarization insensitive RCS reduction is designed, which can reflect the electromagnetic wave uniformly. Both numerical and measured results show that it enables to realize a 10 dB RCS reduction in a wideband from 8.5 to 13GHz.
ISSN No.:1096-4290
Translation or Not:no
Date of Publication:2018-09-01
Co-author:李由,Wang Yi
Correspondence Author:cqs
Date of Publication:2018-09-01