This work presents a compact broadband wide angular stable polarization-insensitive circuit analog absorber at sub 6 GHz. It shows almost 95% absorption from 2.26 to 5.76 GHz over the entire operating range. A transmission line equivalent circuit is modeled, and the response is validated. The design is obliquely stable up to 45° for both transverse electric and transverse magnetic incidences. The analysis of surface current distributions at two resonant frequencies confirming magnetic resonances' role in near-unity absorption. It is compact with a periodicity of 0.1 λ_L and thickness of 0.08 λ_L. Finally, bistatic radar cross section reduction of the proposed absorber attached with an antenna is measured.

中文翻译：

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6 GHz 以下的紧凑、宽带、宽角稳定电路模拟吸收器，用于减少雷达截面

这项工作提出了一种在 6 GHz 以下的紧凑型宽带宽角稳定偏振不敏感电路模拟吸收器。它在整个工作范围内显示出从 2.26 到 5.76 GHz 几乎 95% 的吸收。对传输线等效电路进行建模，并验证响应。对于横向电入射和横向磁入射，该设计在高达 45° 的斜向稳定。对两个共振频率下的表面电流分布的分析证实了磁共振在近统一吸收中的作用。它是紧凑的，周期为 0.1 λ _L，厚度为 0.08 λ _L。最后，测量了建议的带有天线的吸收器的双基地雷达截面减少。