【作者】 金城； 康娜； 吕奇皓； 高红伟；

【Author】 Cheng Jin;Beijing Institute of Technology;

【机构】 北京理工大学；

【摘要】 针对传统超表面存在大角度电磁性能恶化问题,提出了广义布儒斯特波超宽角域理论,设计在超宽角域下稳定电磁性能的超表面。首先针对超宽角域透波问题,建立满足任意入射角双极化透波的类布儒斯特条件。接着,针对电磁吸波问题,推导出双极化超宽角域吸波的广义布儒斯特复波阻抗匹配条件。随后,根据该理论设计了超宽角域透波和吸波超表面,实验证明了在0°～80°和0°～75°超宽角域内的透波和吸波性能,最后将吸波表面共形安装在高速飞行器机翼前缘表面实现RCS缩减,进而实现高速飞行器目标的电磁隐身。更多还原

【Abstract】 In order to solve the problem of large Angle electromagnetic performance deterioration of traditional metasurface,a generalized Brewster wave ultra-wide-angle domain theory is proposed to design a meta-surface with stable electromagnetic performance in u ultra-wide-angle domain.Firstly,a Brewster-like condition is established for the ultra-wide angular transmittance problem,which satisfies the dual polarization transmittance at any incident angle.Then,in view of the electromagnetic absorption problem,the impedance matching condition of the generalized Brewster complex wave is derived.Then,according to the theory,the ultra-wide angular wave transmittance and absorbing meta-surface are designed,and the experimental results show that the wave transmittance and absorbing performance in the ultra-wide angular domain of 0°～80° and 0°～75°.Finally,the absorbing surface is conformal installed on the leading-edge surface of the wing of high-speed aircraft to achieve the reduction of RCS,so as to realize the electromagnetic stealth of high-speed aircraft targets.更多还原