Kaliberda Mstyslav E, Pogarsky Sergey
V N Karazin Kharkiv National University, Kharkiv, Ukraine.
Philos Trans A Math Phys Eng Sci. 2025 Aug 14;383(2303):20240337. doi: 10.1098/rsta.2024.0337.
We study the modification of the radar cross section (RCS) of a circular dielectric cylinder with coplanar graphene strips inside, focusing on the variation of the chemical potential and the excitation of associated plasmon resonances. The scattering and absorption of the H-polarized plane wave in the THz and infrared frequency range, up to 55 THz, are considered. The mathematically grounded method of hyper-singular integral equations and the meshless Nystrom-type algorithm are used. The reduction of RCS is essential in stealth technologies. At the same time, the increase of RCS with the help of radar enhancers is also important and used in marine and air safety applications, making small boats, coastal structures or aircraft more visible for the radar. We show that RCS of the studied scatterer is tunable and can be both increased and reduced at the same frequency.This article is part of the theme issue 'Analytically grounded full-wave methods for advances in computational electromagnetics'.
我们研究了内部带有共面石墨烯条带的圆形介质圆柱体的雷达散射截面（RCS）的调制，重点关注化学势的变化以及相关等离子体共振的激发。考虑了太赫兹和红外频率范围内（高达55太赫兹）H极化平面波的散射和吸收。使用了基于数学的超奇异积分方程方法和无网格的Nystrom型算法。RCS的减小在隐身技术中至关重要。同时，借助雷达增强器增加RCS也很重要，并应用于海洋和航空安全领域，使小船、沿海建筑或飞机在雷达下更易被发现。我们表明，所研究散射体的RCS是可调的，并且在同一频率下既可以增大也可以减小。本文是“计算电磁学进展的基于解析的全波方法”主题特刊的一部分。
