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analysis_of_photonic_bandgap_surfacesAPPLICATIONNOTEANALYSISOFPHOTONICBANDGAPSURFACESUSINGANSOFTHFSSTFig.1DielectricrodPBGcrystalwithwaveguidesimulatorcelldefined(Γ-Xtransmissiondirection).whemicrowaveindustryrecentlyfoundnewusesforconceptsfamiliartosolidstatedesignersintheformofphotonicbandgap(PBG)constructions.PBGconstructionsoffertheabilitytoproducesubstrates,groundplanesandotherstructures,whichhaveaforbiddenfrequencyrange,orbandgap,thatdoesnotsupportelectromagneticwaves.Thisbehaviorarisesfromsomeformofperiodicity,ineithermaterialcharacteristicsorinacircuitlayer,thatreactstoelectromagneticfieldsinmuchthesamewaythatcrystallatticestructuresdo.PBGsurfaces―whichoftenbecomemagneticconductorswithintheirbandgap……