Broadband Polarization Rotation Reflective Surfaces and Their Applications to RCS Reduction
Broadband Polarization Rotation Reflective Surfaces and Their Applications to RCS Reduction
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宽带偏振旋转反射表面及其在RCS降低中的应用
DOI：
10.1109/tap.2015.2502981
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发表时间：
2016-01-01
影响因子：
5.7
通讯作者：
Gong, Shu-Xi
中科院分区：
文献类型：
--
作者：
Jia, Yongtao;Liu, Ying;Gong, Shu-Xi
提出了一种具有高偏振转换比（PCR）的新型宽带偏振旋转（PR）反射面（PRRS），可以反射90度PR的线偏振入射波。所提出的PRRS由印刷在基底上的周期性方形贴片阵列组成，该基底有金属接地。通过使用两个非对称过孔将方形贴片与地连接，可实现 49% PR 带宽和 96% 的高 PCR，这比最先进的 29% PR 带宽有显着改进。此外，在斜入射波下，工作频段内的频率响应是一致的。此外，还提出了另一种具有准L形贴片周期性阵列的超宽带PRRS，将PR带宽进一步增加到103%。此外，设计的PRRS还应用于宽带雷达截面（RCS）减少。提出了 PRRS 单元的不同排列，并研究了它们对 RCS 降低的影响。为了验证模拟结果，制作并测量了 PRRS 原型。测量结果与模拟结果非常吻合。
A novel broadband polarization rotation (PR) reflective surface (PRRS) with a high polarization conversion ratio (PCR) is proposed, which can reflect the linearly polarized incident owave with 90 degrees PR. The proposed PRRS consists of a periodic array of square patches printed on a substrate, which is backed by a metallic ground. By connecting the square patch with the ground using two nonsymmetric vias, a 49% PR bandwidth is achieved with a high PCR of 96%, which is a significant improvement from the state-of-the-art 29% PR bandwidth. Moreover, the frequency responses within the operation frequency band are consistent under oblique incident waves. Furthermore, another ultra-wideband PRRS with a periodic array of quasi-L-shaped patches is proposed, which increases the PR bandwidth further to 103%. In addition, the designed PRRS is applied to wideband radar cross section (RCS) reduction. Different arrangements of the unit cells of the PRRS are proposed and their effects on RCS reduction are investigated. To validate the simulation results, prototypes of the PRRSs are fabricated and measured. The measured results are in good agreement with the simulated ones.