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针对传统的Y环分形双频FSS容易出现栅瓣的缺点,设计了一种改进型的Y环双频带通FSS。仿真分析了该FSS对不同入射角度以及不同极化方式入射波的频率响应特性;考虑到该结构具有若干几何参数,仿真并分析了各几何参数对FSS频率响应特性的影响。仿真结果表明该结构可实现Ku波段Ka波段双频工作,可有效消除栅瓣,并且具有较好的稳定性。在航空航天领域以及多频段卫星通讯领域有很大的工程实用价值。
Aiming at the defect that the conventional Y-ring fractal dual-frequency FSS is prone to grating lobe, an improved Y-ring dual-band FSS is designed. The frequency response characteristics of the FSS to incident waves with different incident angles and different polarizations are simulated and analyzed. Considering that the structure has several geometric parameters, the influence of each geometric parameter on the frequency response characteristics of the FSS is simulated and analyzed. The simulation results show that this structure can realize the dual-band Ka band Ka band work, which can effectively eliminate the grating lobe and has good stability. In the field of aerospace and multi-band satellite communications in the field of great practical value.