红外技术2017，Vol.39Issue(7)：594-598,5.
一种双阻带红外频率选择表面
An Infrared Frequency Selective Surface with Dual Stopband
摘要
Abstract
In order to get the low transmission rate in both far infrared atmospheric window and mid infrared atmospheric window, an infrared frequency selective surface (FSS) composed of two layers of ring units with different sizes is designed. Simulation results show that the FSS has two stopbands in both 3μm-5μm and 8μm-12μm, of which the average transmission is lower than 5%. According to the analytical results for the surface current of FSS, inducted current on the surface of units is symmetrical, which enhance the total scattering-field and lead to the enhanced reflex. While resonant units with different size have different resonant wavelength, two layers of units cooperatively form two stopbands. The paper analyzes the effect of the incident angle and dielectric layer properties (thickness, dielectric constant and loss tangent) on the transmission properties of FSS. The results revealed that the transmission of FSS is insensitive to the incident angle, while the dielectric constant is an important factor to the transmission.关键词
频率选择表面/双屏结构/大气窗口/传输特性Key words
frequency selective surface/double layer structures/atmospheric window/transmission properties分类
信息技术与安全科学引用本文复制引用
车志新,田昌会,王斌科,杨百愚,张海防,陈晓莉,田晓霞..一种双阻带红外频率选择表面[J].红外技术,2017,39(7):594-598,5.基金项目
国家自然科学基金资助项目(21471159),陕西省自然科学基金项目(2015JM2042). （21471159）
