在传统方环形FSS结构基础上进行改进,设计出一种新型结构单元,并进行了实物加工与测试,结果表明,新型结构单元比传统结构拥有更好的频率选择特性。通过曲折线设计和加入垂直枝节,使整个新型单元结构尺寸降低为传统单元尺寸的28.6%左右,有效地实现了对FSS小型化设计。同时,新型单元在不同入射条件下,谐振频率漂移量维持在0.04 GHz左右,拥有较高的角度稳定性与极化稳定性。 Based on the traditional square ring FSS structure, a new type of structural unit was designed and processed and tested in-kind. The results show that the new type of structural unit has better frequency selectivity than the traditional structure. Through the design of zigzag line and the addition of vertical branches, the size of the new unit structure is reduced to about 28.6% of the traditional unit size, effectively realizing the miniaturization design of the FSS. At the same time, the resonance frequency drift of the new cell is maintained at about 0.04 GHz under different incident conditions, which has high angular stability and polarization stability.