Chessboard AMC Surface Based on Quasi-Fractal Structure for Wideband RCS Reduction
Chessboard AMC Surface Based on Quasi-Fractal Structure for Wideband RCS Reduction
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DOI：
10.1109/lawp.2017.2780085
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发表时间：
2018-02
影响因子：
4.2
通讯作者：
Jingjing Xue;Wen Jiang;S. Gong
中科院分区：
文献类型：
--
作者：
Jingjing Xue;Wen Jiang;S. Gong
提出了一种基于准分形结构的棋盘形人工磁导体表面，用于宽带雷达散射截面（RCS）减缩。棋盘结构由两个不同的单元形成，在超过90%的频率带宽上具有180° ± 37°的相位差。利用准分形结构实现宽带、紧凑的特性。分析了棋盘形表面的单站和双站RCS，并与等尺寸理想电导体地平面的结果进行了比较。由于棋盘表面的散射场被重定向到四个象限，在5.4到14.2 GHz范围内可以实现10 dB的RCS显著减小。制作的样机的测量结果与仿真结果吻合良好。
A chessboard artificial magnetic conductor surface based on the quasi-fractal structure is proposed for wideband radar cross-section (RCS) reduction. The chessboard configuration is formed by two different cells with 180° ± 37° phase difference over more than 90% frequency bandwidth. The quasi-fractal structure is utilized to achieve the wideband and compact characteristics. Monostatic and bistatic RCS of the proposed chessboard surface are analyzed, and the results are compared with those of equal-sized perfect electric conductor ground plane. Because the scattered fields of the chessboard surface are redirected toward four quadrants, a remarkable RCS reduction of 10 dB can be realized from 5.4 to 14.2 GHz. Measured results of the fabricated prototype satisfactorily agree with the simulated ones.