红外技术2019，Vol.41Issue(1)：22-26,5.
一种新型红外频率选择表面
A Novel Infrared Frequency Selective Surface
摘要
Abstract
In order to get low transmittance in both the mid-infrared and far-infrared atmospheric windows, a novel double-screen infrared frequency selective surface based on the hexagonal ring structure was designed. Simulation analysis using CST electromagnetic software showed that the average transmittance of the frequency selective surface in the two atmospheric windows (3-5 mm and 8-15 mm) for normal incidence waves is suppressed under 0.025, so that the dual stop-band of the infrared waveband was realized. Next, this paper researched the filtering mechanism of the frequency selective surface based on the effective surface impedance and the surface current. From this, it can be easily found that due to the coupling between screens or coupling between units in a screen, symmetrical distribution of the induced current enhances the total scattering filed, thus forming the enhanced reflection, namely the ideal infrared stop-bands. This paper analyzes the effect of electromagnetic wave incident angle, polarization mode, and the thickness of dielectric layer on the transmission properties of the frequency selective surface.关键词
频率选择表面/红外隐身/传输特性Key words
frequency selective surface/infrared stealth/transmission properties分类
信息技术与安全科学引用本文复制引用
王斌科,王可欣,田昌会,屈绍波..一种新型红外频率选择表面[J].红外技术,2019,41(1):22-26,5.基金项目
国家自然科学重点基金(61331005) （61331005）
国家自然科学基金(11274389). （11274389）
