13 Modal Properties of Layered Metamaterials文稿

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1、FilippoCapolino/TheoryandPhenomenaofMetamaterials_CFinalsPage--#13ModalPropertiesofLayeredMetamaterialsPaoloBaccarelliSapienzaUniversityofRomePaoloBurghignoliSapienzaUniversityofRomeAlessandroGalliSapienzaUniversityofRomePaoloLampariello.Introducti

2、on.........................................-SapienzaUniversityofRome.Background..........................................-GiampieroLovat.GroundedMetamaterialSlabs:SapienzaUniversityofRomeStructureDescription................................-.GroundedM

3、etamaterialSlabs:SurfaceWaves........-SimonePaulottoTESurfaceWaves●TMSurfaceWaves●Surface-WaveSapienzaUniversityofRomeSuppressioninGroundedDNGSlabs●MagneticDipoleExcitation●NonradiativeDielectricWaveguidesGuidoValerio.GroundedMetamaterialSlabs:LeakyWaves........

4、..-SapienzaUniversityofRomeReferences.................................................-13.1IntroductionThischapteraddressesmodalpropertiesoflayeredstructurescomposedbymetamaterialsandtheirbasicapplicationsinwaveguidingandradiatingdevices.InSection.anovervie

5、wofresultsthatappearedintheliteratureonthistopicispresented,with-outaimingforcompleteness,toprovidethereadersomebackgroundinformation.Theattentionisthenfocusedonaspecificstructure,thatis,agroundedmetamaterialslab,which,asiswellknown,constitutesabasicbuildingblockinava

6、rietyofplanarmicrowavecomponents.ThisisdescribedinSection.,wherethetheoreticalapproachusedforitsanalysisandthemodelsadoptedforthemetamaterialparametersareillustrated.InSection.,thesurface-wavepropagationonagroundedmetamaterialslabisdiscussedandsimplesufficientco

7、nditionsforsurface-wavesuppressionaregiven,showingtheirapplicationtoreduceedge-diffractioneffectsinplanarantennasandtoachieveunimodalpropagationinnonradiativedielectricwaveguides.InSection.,complex(leaky)wavessupportedbythesamereferencestructurearestudied,illustrat

8、ingsomeoftheirpeculiarradiativeproperties.13-1©2009byTaylorandFrancisGroup,LLCFilippoCapolino/TheoryandPhenomenaofMetamateri