Improvement on the wave absorbing property of a lossy frequency selective surface absorber using a magnetic substrate

作     者：孙良奎 程海峰 周永江 王军 Sun Liang-Kui,Cheng Hai-Feng,Zhou Yong-Jiang,and Wang Jun Key Laboratory of Advanced Ceramic Fibers and Composites,College of Aerospace and Materials Engineering,National University of Defence Technology,Changsha 410073,China

作者机构：Key Laboratory of Advanced Ceramic Fibers and CompositesCollege of Aerospace and Materials EngineeringNational University of Defence Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2012年第21卷第5期

页      面：378-382页

核心收录：

学科分类：08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：wave absorbing performance lossy frequency selective surface(FSS) bandwidth 

摘      要：An equivalent-circuit model is used to analyse the improvement of the wave absorbing performance of the lossy frequency selective surface（FSS） absorber by using a magnetic substrate,showing that it is possible to widen the wave absorbing *** pieces of magnetic substrates are *** to the complex permittivity and permeability,the reflectivity of the corresponding absorber is calculated by the finite difference time-domain（FDTD） method,and the bandwidth of the reflectivity below 10 dB is optimized by genetic *** calculated results indicate that the wave absorbing performance is significantly improved by increasing the complex permeability of the substrate;the reflectivity bandwidth below 10 dB of the single layer FSS absorber can reach 3.6-18 GHz with a thickness of 5 mm,which is wider than that with a dielectric *** density of the FSS absorber is only 0.92 g/cm ***,the absorption band can be further widened by inserting a second lossy ***,a double layer lossy FSS absorber with a magnetic substrate is fabricated based on the design *** experimental result is consistent with the design one.