Nextyoushouldchoosetheapplicationarea,whichis Microwaves & RFfortheexampleinthistutorialandthenselecttheworkflowbydouble-clickingonthecorrespondingentry. There is no need to define master and slave boundary conditions the phaserelationoftheopposingboundariesisautomaticallysetbyspecifyingtheincidentangleoftheinwardtravellingplanewave.ĪfterlaunchingtheCSTSTUDIOSUITEyouwillenterthestartscreenshowingyoualistofrecentlyopenedprojectsandallowingyou to specify theapplicationwhichsuits your requirementsbest.Theeasiestway togetstarted is toconfigureaprojecttemplatewhichdefinesthebasicsettingsthataremeaningfulforyourtypicalapplication.ThereforeĬlickontheCreate Projectbutton intheNew Projectsection. The simulationofanentirearrayof resonant ringswouldbeprohibitively -UnitCell(FD)template,whichautomaticallyappliesunitcellboundaryconditionsinthex-andy-directionsandsetsupFloquetportexcitationsinthepositive and negative z-directions. In thisexampleanarrayoffullwavelengthresonantconductingringsonadielectricsubstrate issimulated.SincetheFSSwouldbeusedoncurvedstructureslikeradomes,itisdesirablethattheFSShavethesameresonantfrequencyforallincidentplanewaveangles.Foragivenpolarisation,ringresonatorsareknowntobestablewiththescanangle.CSTMICROWAVESTUDIO(CSTMWS)canbeusedtoestablishtheangulardependenceoftheresonantfrequency.ĬST MICROWAVE STUDIO Model: Parameter definition and preliminary settings A simple unit cell of a ring resonator band-stop infinitearrayisconsideredasanexample.įrequency selective surfaces are increasingly used for the frequency filtering of plane waves in radar orcommunicationssystems.Aone-ortwo-dimensionalperiodicarrayofresonantstructuresonabackingmaterial,eitherapertures inametallic sheet ormetallic patchesona substrate,actsasa filter fora planewavearriving from anyangleof incidence. The increasing interestwithin the high-frequency community in this sortof structure has alsomade itsaccuratesimulation increasingly important.This tutorialdescribeshowanFSSstructuremaybesimulatedefficiently using CST MICROWAVE STUDIO (CST MWS). AFrequencySelectiveSurface(FSS)isaperiodicassemblyofone-ortwo-dimensionalresonantstructures,eitherasaperturesinathinconductingsheetorasmetallicpatchesonasubstrate,whichmayhaveaband-passorband-stopfunction respectively.