基于Y型频率选择表面的小型化设计  

Design of a Miniaturized Frequency Selective Surface Based on Y Element

作　　者：吴瑞[1] 张厚[1] 许志永[1] 殷雄 颜廷升 

机构地区：[1]空军工程大学 [2]解放军95917部队 [3]解放军93636部队

出　　处：《微波学报》2015年第2期55-58,62,共5页Journal of Microwaves

基　　金：国家自然科学基金(61372034)

摘　　要：设计了一种基于Y型的带阻型小型化频率选择表面,其单元的等面积正方形尺寸仅为0.057λ0×0.057λ0,厚度仅为0.021λ0。新型单元通过对传统Y型结构的分支向内进行规则的弯折来增大Y型单元的臂长,增加单元的谐振长度,从而增大了单元的等效电感与电容,提升了空间利用率。单元面积的减少,提高了单元的小型化效果,同时减小了单元间的距离,使频率选择表面具有较好的角度稳定性。仿真和测试结果表明,这种小型化单元对于不同角度入射的TE和TM波都具有很好的稳定性,其单元面积比谐振频率相同的传统Y形单元的面积减小了约96.3%,具有良好的带阻特性。In this paper,a stable miniaturized band-reject frequency selective surface( FSS) is proposed. Simulation results show that the dimension of the equal-area square is only 0. 057λ0× 0. 057λ0and the thickness is 0. 021λ0where represents the wavelength of the resonant frequency. The arm-length and resonant length of the proposed structure was lengthened by bending arms into the inside of the unit cell to improve the space utilization and reduce the cell size. The equivalent inductance and capacitance are improved which contributes to miniaturization of unit cell's dimension. The proposed structure's angle stability is also improved due to the reduction of distance between unit cells. The measure and simulation results demonstrate the miniaturization characteristic is stable with respect to waves with both polarizations and different incident angles. With excellent band-reject characteristic,the proposed FSS obtains 96. 3% reduction in dimension comparing with the traditional Y element.

关 键 词：频率选择表面 小型化 角度稳定性 极化稳定性 

分 类 号：TN822[电子电信—信息与通信工程]