曲率对柱面频率选择表面传输特性的影响  

Effect of Curvature on the Transmission Characteristics of Cylindrical Frequency Selective Surface

作　　者：梁凤超[1] 汪剑波[2] 王佳欢[2] 孙贯成[2] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所 光学系统先进制造技术重点实验室,长春130033 [2]长春理工大学理学院,长春130022

出　　处：《长春理工大学学报（自然科学版）》2013年第3期65-66,106,共3页Journal of Changchun University of Science and Technology(Natural Science Edition)

摘　　要：曲面频率选择表面(FSS)部件处于天线的非均匀照射下,容易造成传输特性对角度响应的不稳定。本文通过设计了一种柱面FSS结构,并利用时域有限差分法,研究了分别以圆环型、十字型和Y型单元构成柱面FSS结构下,曲率对其传射特性的影响。结果显示,随着曲率半径的减小,柱面FSS频点向低频漂移,透过率降低,其中以Y型单元的性质相对稳定。When Frequency selective surface（FSS） is exposed to the uneven irradiation of antenna,the transmission characteristics is easy to be instable.In this paper,a kind of cylinder FSS structure is designed and the influence of curvature on transmission characterisitcs has been researched under the cylinder FSS strucutres composed of ring-type,cross-type and Y-type unit respectively by means of finite difference time domain（FDTD）.The results show that with the decrease of radius of curvature,the frequency point of cylinder FSS drifts to the low frequency point and the transmittance decreases;furthermore the Y-type unit shows the relatively stable characteristics.

关 键 词：频率选择表面 柱面 曲率 时域有限差分法 

分 类 号：TB34[一般工业技术—材料科学与工程]