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1、电磁掀陷修衣材料罚究进屐陈海燕，谢建良，周佩瑜，陆海鹏，邓龙江*(电了科技大学，国家电磁辐射控制材料工程技术研究中心，四川成都610054)摘要：研究了电磁缺陷修复材料在飞行器边缘、缝隙等表面电磁缺陷散射控制中的应用，阐述了其原理和发展状况。给出了表面电磁缺陷的慕本泄义，分析了其散射特点，并提出电磁缺陷修复原理及基本方法。电鹼缺陷修复材料主要包括用于表面波抑制的磁性材料、用于窄缝隙保证电连续的导电材料和用于边缘散射控制的渐变阻抗材料等三类，木文重点介绍了用于边缘散射控制的渐变阻抗材料。该渐变阻抗材料基于图形渐变频率选择农面的概念，加
2、载于边缘考虑平行极化和垂直极化两种情况，并与边缘锯齿化和未加载情况进行比较。从研究情况来看，经过恰当的材料选取和合理的阻抗梯度设计，渐变阻抗材料可以有效控制边缘散射，并能取得宽带效果。最后展盥了渐变阻抗材料在电磁散射及电磁辐射领域的应用前景。关键词：电磁缺陷；渐变阻抗材料；边缘散射；电磁缺陷修复材料中图分类号：TN34文献标识码：A文章编号：1674—3962(2013)01-ResearchDevelopmentofElectromagneticDiscontinuitiesRepairingMaterials*Hai-YanCh
3、en,Jian-LiangXie,Pei-HengZhou9andHai-PengLu,Long-JiangDeng・(UniversityofElectronicScienceandTechnologyofChina,NationalEngineeringResearchCenterofElectromagneticRadiationControlMaterials,Chengdu,610054,China)Keywords:Abstract:Thetheory,applicationanddevelopmentofelectro
4、magneticdiscontinuitiesrepairingmaterialsinscatteringcontrollingofelectromagneticdiscontinuitiessuchasedge,gapsandgrooves,andsteps,aredescribedinthispaperThedefinitionandcharacteristicofsurfaceelectromagneticdiscontinuitiesarcanalyzed,andthetheoryandmethodsforrepairing
5、electromagneticdiscontinuitiesarcalsoproposed.Electromagneticdiscontinuitiesrepairingmaterialsincludingmagneticmaterialsforsuppressionofsurfacewave,conductivematerialsforrepairingthenarrowgapsorgrooves,andthetaperedimpedancematerialsforcontrollingedgescatteringarediscu
6、ssedrespectively,andoneofwhich,thetaperedimpedancematerialsareillustratedparticularly.Thetaperedresistivematerialsrealizedbygeometricvariationbasedonfrequency-selectivesurfacesconceptsisdemonstratedhavinggoodsuppressionofedgescatteringfromatriangularmetallicplate.Elect
7、romagneticback-scatteringoftheas-preparedtargetfromatriangularplatewithedgetaperedresistivesheetloadingisproposedforbothhorizontalpolarizationandverticalpolarization,andcomparedwiththatfromtheoneofthesameshapebutloadedwithserratedshapingornoneresistivesheetontheedge.Th
8、eresultsshowthatthetaperedimpedancematerialscanregulateeffectedgescatteringbychoosingtheappropriatematerialsanddevisi
