RCS reduction of microstrip antenna using split square loop thin absorber

Ultra-thin wideband frequency tunable metamaterial absorber and its application for antenna radar cross section reduction

“…In comparison to conventional coated and traditional structural absorbing materials, MMAs offer notable advantages, including a reduced profile, lower weight, absence of a surface loss layer, suitability for use in the vicinity of radiating structures, and the ability to withstand specific loads. Hence, it finds extensive applications in the domain of radar stealth for diverse targets, such as fuselages and antennas [6][7][8][9].…”

The simulation of ultra-broadband radar cross section reduction metasurface

“…In recent years, researchers have proposed many methods for reducing the RCS of target objects, among them: Das Priyanka et al used a split square loop thin absorber to reduce RCS [7], Jianxun Su et al used uneven-layered coding etamaterial tile to construct a metasurface for RCS reduction. All these methods can reduce the RCS of the target effectively, but some frequency bands are not covered.…”

Design and Implementation of a Novel Radar Cross Section Reduction Metasurface Covering 12.5-17.4 GHz and 20.5-36.2 GHz

“…In recent years, researchers have proposed various types of metasurfaces that can achieve RCS reduction. Liu et al proposed the use of a nonresonant metamaterial progenitor based on transformed optics [20], implemented by applying a conformal coordinate transformation to a system of Maxwell's equations to obtain an intrinsic dataset of the spatial distribution of the hypersurface; Priyanka and Kaushik proposed a unique split-square ring absorber to reduce RCS [21]; Su et al proposed a novel nonuniform hierarchical coding [22] of metamaterial [23] tiles; Yang et al proposed RCS reduction by scattering mechanism using carbon fiber-linked composites [24]; and Xu et al proposed on an efficient Pancharatnam-Berry meta-atomic method to form subarrays with focused reflective phase profiles that can ensure almost uniform diffuse scattering of arbitrarily polarized electromagnetic waves to achieve RCS reduction [25][26][27], and a stealth strategy that uses ultrathin parabolic metasurfaces to achieve dual polarization channel and multifrequency channel diffuse reflection stealth, allowing for fundamental wave number splitting and wave number splitting supersurfaces of scattered waves [28,29]; Li et al and Chen et al proposed an optimized optically transparent metasurface for polarization and angle-insensitive broadband single-station as well as dual-station RCS reduction [30,31]; Ying-jie et al proposed an anisotropic metallic elliptical ring that modulates the intrinsic resonant phase by changing the structure of the superatom and integrates resonant phase and geometric phase modulation to excite diffusion-like scattering by scattering the electromagnetic energy in multiple directions to suppress specular RCS [32]. However, some of the above work only considers single-station RCS reduction and not the more important two-station RCS reduction, and most of the metasurface RCS reduction has a narrower band and a relatively more complex structure.…”