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ADS2011EMBasics(v2October2011)©CopyrightAgilentTechnologies2011LABEXERCISE2EMBasics(Momentum)Topics:EMsimulationinADS,focusingonMomentum,includingsubstrateandportsetups,3Dviewing,visualization,andmore.Audience:EngineerswhohaveabasicworkingknowledgeofADS2011,havecompletedtheprerequisitecourse,orwhorequireEMtraining.Prerequisites:Completionofthecourse,WorkspacesandSimulationToolsorequivalentexperience,includingADSlayoutskills.Objectives:BeabletosetupandrunEMsimulationsfromADSlayout,includingcreatingasubstrateanddefiningTechnologylayersandmaterials.Lab2:EMBasicsCopyright2011AgilentTechnologies2TableofContents:Lab21.CreateaNewWorkspaceandLayout32.DefineDielectricMaterials:TechnologyFile43.Drawalayout:2metalstripsandavia54.OpentheEMSimulationSetup65.AddanewSubstrate66.Definestripconductors(metal)87.AddaSubstrateLayer98.MapaViaandIntrudedConductor99.ImportingSubstrates1110.EMSetup:YellowCautionSigns1111.SelectingPinsandDefiningPorts1212.Usingthe3DEMPreview1313.DefiningFrequencyPlan,OutputPlan,andMeshOptions1414.EMModelandSimulation1515.EMSimulationData1616.Optional:VisualizationofCurrent17Lab2:EMBasicsCopyright2011AgilentTechnologies31.CreateaNewWorkspaceandLayouta.IntheADSMainwindow,usethewizardtocreateanewworkspace:FileNewWorkspaceorusetheicon.Nametheworkspaceandlibrary:My_EM_wrk-addonlytheAnalog/RFlibraryasshownhereandfinish.b.Createanewlayoutusingthedefaultcellname:cell1,asshownhere.c.IntheLayoutwindow,selectOptionsTechnologyMaterialDefinitions.Whenthedialogappears,selecttheDielectricstab–noticeitisempty.Ofcourse,ifyouareusingaPDKorlibrarywithsubstratesalreadysetup,thenyoumightbeabletoseesomematerialslistedhere.Thislabwillshowyouhowtocreatematerialsforusewithasubstrate.Lab2:EMBasicsCopyright2011AgilentTechnologies42.DefineDielectricMaterials:TechnologyFilea.ClicktheAddDielectricbuttonandadefaultname(Dielectric_1)willbeadded.Next,changetheRealvalue=6(Permittivity)asshownhereandclickApply.Youcouldsetothervaluesbutthisisenough.b.ClicktheAddFromDatabasebuttonandclickonAluminafromthelistofpre-defineddielectrics.ClickOKandyourtwodielectricsshouldappear.Noticethatyoucanchangethetype,butleaveitasSvensson/Djordjvic.Lab2:EMBasicsCopyright2011AgilentTechnologies5c.Next,selecttheConductorstabandclickAddConductor.Thedefaultwillbeadded(Conductor_1).ThenclickAddFromDatabaseandselectGold,thenclickOKtoadditandclickApply.Withthematerialsadded,clickOK.3.Drawalayout:2metalstripsandaviaa.Inthelayoutwindow,drawthissimpledesignusingthreelayersandthevaluesinmilsshownhere.Changetheentrylayerasneededtodrawtworectangles(useCondandCond2)andacenteredcircle(useHole).Notethatthecolorsshownmaybedifferentthanyourcolors–itisnotimportant.Lab2:EMBasicsCopyright2011AgilentTechnologies6b.Savethelayoutwhenyouhavefinished–youwilladdpins/portslater.4.OpentheEMSimulationSetupa.SelecttheEMSimulationSetupiconinlayouttoopentheEMSetupdialog(shownhere).b.NoticetheyellowcautionsignsnexttotheSubstrateandPortsicons.Thismeansthatthesetwoitemshavenotbeenspecifiedandyoucannotrunthesimulationyet.ReadthroughtheSetupOverviewquicklythenclosetheEMsetup.Next,youwillopentheSubstrateeditoranddefineasubstrateforyourlayout.5.AddanewSubstratea.NOTEonsubstrates:Youcanuseorcopysubstratesfromanylibraryinyourworkspace.Butforthisworkshopyouwillcreateanewsubstratesothatyouaremorefamiliarwithhowtheeditorworks.b.IntheLayoutwindow,clicktheSubstrateEditoriconandclickOK.ThenclickOKagaintousethedefaultname(Substrate1)foryoursubstrate.c.NoticethataTemplatefor25milAluminawillbeused–thisisastartingpoint.Lab2:EMBasicsCopyright2011AgilentTechnologies7d.Thisisthesubstrateeditorwitha3-Dlikeviewofthelayersforthistemplate,includingaconductor(cond)andtheboundaryconditions.Thisisalwaysastartingpointfornewsubstrates.Readtheinformationontherightabouthowtoadd,delete,orselectitemsbutdonotdoanythingyet.Thestepsthatfollowwillguideyouthroughthecreationofthestack-upandmappingsshownhere,usinglibraryTechnologymaterials–thispictureshowswhatthesubstratewilllooklikeafteryoufollowthesteps.NOTE:Youcandefinematerials(dielectrics,conductors,etc.)intheSubstrateEditorbecauseitgivesyouaccesstotheTechnologyfileasyouwillsee.However,definingthemfirst,intheTechnologyfileisrecommended.Lab2:EMBasicsCopyright2011AgilentTechnologies86.Definestripconductors(metal)Nowyouwilldefinetheconddrawinglayertobeastripconductor:Gold.a.Clickonthecondstripinthegraphicalsubstrateeditorontheleft-itwillbecomeoutlinedandthepropertieswillappearontheright.Youalwayshavetoclickonthe3Dsubstratedrawingtoseetheproperties.Next,setlayercondMaterial=Goldbyusingthedrop-downarrowbuttonforMaterialtochangecondfromperfectconductortoGold.NOTE:theboxforOnlypinsandpinshapesfromlayerisonlycheckedifyouaremappingpins(vias)butnoothermetalsorconductors.b.Next,clicktheEditMaterialsbuttonwiththreedots[…]nexttothedropdownarrowforMaterial.ThisshowstheTechnologyfilematerial.NoticeyoucouldaddsurfaceroughnessforconductorsusedinMomentumsimulations–butdonot.ThisisonlytoshowhowtheEMsubstrateeditorworks.IfyouusealibraryPDK,thenallthematerialsfromthatPDKwouldappear.c.Ca