Study on Surface Design Method of Quasi-Elliptic Response Band-Pass Frequency Selection in S-Band
焦煜洋 1陈志红 1姜铁华1
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作者信息
1. 北京宇航系统工程研究所,北京 100076
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摘要
频率选择表面(Frequency Selective Surface,FSS)在多个领域中具有重要应用价值.通过两层双行为谐振器的双方环 FSS 级联,实现具有准椭圆响应的 FSS,不同于传统的巴特沃斯与切比雪夫型.仿真结果表明,FSS 在 S 波段、通带至阻带单侧过渡带宽为 350 MHz.设计结构与同通带二阶巴特沃斯滤波器相比,过渡带减小了 30%,与三阶巴特沃斯滤波器过渡性能一致.全波仿真结果表明,设计结构工作在 S 频段,实现了准椭圆响应,并具有良好极化稳定性与角度稳定性.
Abstract
Frequency Selective Surface(FSS)has important application value in many fields.The response curves of traditional band-pass frequency selective surfaces are mostly of Butterworth and Chebyshev type.The structure realizes a band-pass frequency selective surface with quasi-elliptic response by cascading two layers of double squareloops FSS.In the S-band of the FSS,the single-side transition band width between passband and stopband is only 350 MHz.Compared with this structure,the transition band is reduced by 30%,which is consistent with the performance of the third-order Butterworth filter transition band.Full-wave simulation results implement quasi-ellip-tical response,and show that the structure has good polarization stability and angular stability.
关键词
频率选择表面/准椭圆响应/双方环单元
Key words
Frequency selective surface/Quasi-elliptic/Double square loops
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