10. Application of Electromagnetic Band Gaps to Microwave Circuit Design

《10. Application of Electromagnetic Band Gaps to Microwave Circuit Design》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、FilippoCapolino/ApplicationsofMetamaterials_CFinalsPage--#10ApplicationofElectromagneticBandGapstoMicrowaveCircuitDesignJordiBonacheUniversitatAutònomadeBarcelonaFranciscoFalconeUniversidadPúblicadeNavarraIgnacioGil.EBG-BasedTransmissionLines:Reflector

2、sandResonators...........................................-UniversitatAutònomadeBarcelona.HarmonicPassbandSuppressioninPlanarJoanGarcía-GarcíaFiltersbyUsingEBGs................................-UniversitatAutònomadeBarcelona.CapacitivelyLoadedTransmissionLines..

3、...........-AnalysisofCapacitivelyLoadedTransmissionLines●FerranMartínApplicationsofCapacitivelyLoadedTransmissionLinesUniversitatAutònomadeBarcelonaReferences.................................................-Electromagneticbandgaps(EBGs)areperiodicstructuresthatar

4、eabletoinhibitsignalpropagationatcertainfrequenciesanddirections.TheprincipleofoperationofEBGsisthewell-knownBraggeffect,whichiscausedbytheinteractionofawavewithaperiodicstructurewithrelevantdimensions(period)comparabletothewavelengthsofguidedwaves.Actually,theterm“EBG”ha

5、sbeenusedtodesignatethoseperiodicstructuresoperatinginthemicrowaveormillimeterwaveregionoftheelectromagneticspectrum[].However,periodicstructureswerepreviouslyappliedtotheopticaldomainandreceivedthenameofphotonicbandgaps(PBGs)orphotoniccrystals[],thelatterowingtotheirsi

6、milaritywithsemiconductorcrystals,whichexhibitforbiddenenergyregions(bandgaps)forelectronsduetoperiodicity.Inthischapter,themainaimistohighlightsomepotentialapplicationsofEBGsinplanarcir-cuittechnology.PlanarEBGsareessentiallytransmissionlineswithperiodicperturbationsinwa

7、veimpedance.ThisproducesaBraggreflectioninsomefrequencybands,roughlygivenbythespec-trumofthecouplingcoefficient[,],whichiscloselyrelatedtothewaveimpedanceofthelineandhencetothelinegeometry.Themodulationofthewaveimpedancecanbeachievedbydrillingholesinthesubstrate[],byet

8、chingperiodicpatternsinthegroundplane[–],orbyvaryingthegeometryofthesignalstrip[](oracombina