1987,25(3):409-415.[22],,,./[J].,1992(5):43-46.[23],,.C/C-SiC[J].,2007,21(2):135-139.[24]LamourouxF,BourratX,NaslainR.Siliconcarbideinfiltra-tionofprousC-Cconpositesforimprovingoxidationresis-tance[J].Carbon,1995,33(5):525-535.[25],,./:,CN200710018031[P].2007-12-05.[26],,,.:,CN200510096086[P].2006-04-26.[27],,,.B2O3/[J].,2008,36(11):73-77.[28],,,.:,CN200510096087[P].2006-05-03.,、,,、、。、、,、、、、、,。。,,。,、、、、。1(SE),,,:SE=20lg(V0/V1)=10lg(P0/P1)。(1)SE,dB;V0;V1;P0;P1。,,(,330031),,。、,,、。;;;TM25;TB34A1004-244X(2010)02-0103-05ProgressinperformancetestingmethodofelectromagneticshieldingandabsorbingmaterialsCHENGuanghua,HUANGShaowen,YIXiaoshun(SchoolofMaterialScienceandEngineering,NanchangUniversity,Nanchang330031,China)AbstractThecharacterizationtechniqueisthebasisofmaterialsresearch.Therapiddevelopmentofnewtypeselectromagneticshieldingandabsorbingmaterialsinrecentyearsrequestssomenewcharacterizationtechniques.Inthispaper,testingmethods,equipmentsandworkingprinciples,whichcharacterizematerialselectromagneticshieldingandabsorbingperformanceathomeandabroadwereintroduced.Thesemethodswereclassified,andtheirapplicationconditions,applicationscopesandmeritsanddemeritswerereviewed.Keywordselectromagneticshielding;absorbingmaterials;electromagneticperformance;testingmethod:2009-05-06;:2009-11-19:(GJJ09028);(YC09A040):,,,;。:,,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!ORDNANCEMATERIALSCIENCEANDENGINEERINGVol.33No.2Mar.,20103322010333:SEE=20lg(E0/Es);(2)SEH=20lg(H0/Hs)。(3)E0,H0(V/m)(A/m);Es、Hs(V/m)(A/m)。,;,(TEM)(TE)。1.1r≥λ/2π,λ,,,EH,r,SEE=SEH。,。[1-3](NBS),1995SJ20524—1995。1,,P0(dB)P1(dB),SE(dB)=P0-P1。,,2。、、、,,10mm。,;,Fc=C0/(π(b/2.3+b))=1.62GHz[4],100kHz~1.5GHz。[5-6],[4]。1.2r<λ/2,λ,EH90°,EHr,1/r21/r3[7]。,SEE≠SEH。1)[8]。,。3。、,P0(dB)P1(dB),SE(dB)=P0-P1。,。,,。1~30MHz,≤4mm,50dB。2)MIL-STD-285。MIL-STD-2851956[9],1997。MIL-STD-285,4。,,。,,,。1.31969,199119972。2Fig.2Clampdevicedrawingofflangecoaxialmethod1042IEEESTD299—1997。,,[10-11],5。,,。。,,,;。,9kHz18GHz(50Hz~100GHz)[12];,。,,,()、(TEMcell)、(GTEMcell)、。,()、、、Q,,,,[13-14]。,、8GHz[15]。1.4,(TEM)(TE)。,1.5GHz[16-18]。6。,,(S11S21)ΓT,,[19]:Г=1-(S221-S211)2S211±1-(S221-S211)2S211112-11111111111111111111/2;(4)T=S21+S11-Г1-(S21+S11)Г。(5)│Г│≤1。,,。2,,,,。,。2.1。1)。[20-22],2040,2080。7。、,(),。,:10533,。1GHz,1GHz,,,,60°,[23]。2)。1.5GHz,,。(S11)。1.5GHz6mm,[4]11,。,。,,。,[24][25],。3)RCS[26][27]。RCS,RCS,,,。,。,,,[28]。,,RCS,RCS[23]74。、,。2.2,,。:Γ=Z-Z0Z+Z0=Zi-1Zi+1;Zi=Z/Z0。(6)Γ,Z0,Zi,:R=20lg│Γ│。:R=20lgthj2πfdcμε姨姨姨11με姨-1thj2πfdcμε姨姨111με姨+1。(7)f,μ、ε,c;d。,,[29-31],6。(S11S21)Γ,,Γ[20]:Г=1-(S221-S211)2S211±1-(S221-S211)2S211112-11111111111111111111/2。(8)│Г│≤1,,。,。3、()、、、、、、。,,,。1062,,、,,,。4[1]LUOXiangcheng,CHUNGDDL.Electromagneticinterferenceshieldingusingcontinuouscarbon-fibercarbon-matrixandpolymer-matrixcomposites[J].Composites:partB,1999,30:227-231.[2]DasNC,KhastgirD,ChakiTK,etal.Electromagneticinterfer-enceshieldingeffectivenessofcarbonblackandcarbonfibrefilledEVAandNRbasedcomposites[J].Composites:partA,2000,31:1069-1081.[3].[D].:,2007.[4],,.[J].,1995,35(3):9.[5],.[J].:,2008,32(1):44,55,65.[6]CAOJingyao,CHUNGDDL.Colloidalgraphiteasanadmixtureincementandasacoatingoncementforelectromagneticinterferenceshielding[J].CementandConcreteResearch,2003,33:1737-1740.[7].[M].:,2006:89.[8].[D].:,2003.[9]MIL-STD-285.MilitaryStandardAttenutionMeasurementsForEnclosures,ElectromagneticShielding,ForElectronicTestPurposes,Methodof.[S].[10]LiYong,ChenChangxin,ZhangSong,etal.Electricalconduc-tivityandelectromagneticinterferenceshieldingcharacteristicsofmultiwalledcarbonnanotubefilledpolyacrylatecompositefilms[J].AppliedSurfaceScience,2008,254:5766-5771.[11],.[J].,2002(2):27-29.[12]IEEEStd299-1997.IEEEStandardMethodforMeasuringtheEffectivenessofElectromagneticShieldingEnclosures[S].[13],,.[J].,2008,31(1):102-103.[14],,,.[J].,2007(5):51-54.[15],,.[J].,2007,30(6):32-34.[16]TakahiroYamada,ToshiyukiMorizane,TetsuhiroArimitsu,etal.ApplicationoflowresistivityGa-dopedZnOfilmstotransparentelectromagneticinterferenceshieldingmaterial[J].ThinSolidFilms,2008,517:1027-1031.[17],,,.[J].,2005(1):56-58.[18]LakshmiK,JohnHoney,MathewKT,etal.Microwaveabsorp-tion,reflectionandEMIshieldingofPU-PANIcomposite[J].ActaMaterialia,2009,57:371-375.[19],./[J].,2005,26(5):630-634.[20]WangChuang,LiKezhi,LiHejun,etal.InfluenceofCVItreatmentofcarbon-fibersontheelectromagneticinterferenceofCFRCcomposites[J].Cement&ConcreteComposites,2008,30:478-485.[21],,,.[J].,2004,33(7):916-920.[22]ZhaoNaiqin,ZouTianchun,ShiChunsheng,etal.Microwaveabsorbingpropertiesofactivatedcarbon-fiberfeltscreens(vertical-arrangedcarbonbers)/epoxyresincomposites[J].MaterialsScienceandEngineeringB,2006,127:207-211.[23],,.[J].,2001,17(4):73.[24].EPS[D].:,2006.[25].[D].:,2006.[26],,.[J].,2006,34(8):901-907.[27],,,.[J].:,2002,3(6):35-38.[28],.[J].,2007,30(9):25-27.[29]LakshmiK,JohnHoney,MathewKT,etal.Microwaveabsorp-tion,reflectionandEMIshieldingofPU-PANIcomposite[J].ActaMaterialia,2009,57:371-375.[30],,,.[J].,2003,26(6):6-9.[31]DosoudilR,UsakovaM,FranekJ,etal.RFelectromagneticwaveabsorbingp