ie3d教程 chap1.docx

ie3d教程 chap1.docx

《ie3d教程 chap1.docx》由会员分享，可在线阅读，更多相关《ie3d教程 chap1.docx（17页珍藏版）》请在冰豆网上搜索。

ie3d教程chap1

Chapter1Introduction

ElectromagneticsimulationisanadvancedtechnologytoyieldhighaccuracyanalysisanddesignofcomplicatedmicrowaveandRFprintedcircuit,antennas,high-speeddigitalcircuitsandotherelectroniccomponents.IE3Disanintegratedfull-waveelectromagneticsimulationandoptimizationpackagefortheanalysisanddesignof3Dandplanarmicrowavecircuits,MMIC,RFIC,RFID,antennas,digitalcircuitsandhigh-speedprintedcircuitboards（PCB）.Sinceitsformalintroductionin1993IEEEInternationalMicrowaveSymposium（IEEEIMS1993）,theIE3Dhasbeenadoptedasanindustrialstandardinplanarand3Delectromagneticsimulation.MuchimprovementhasbeenachievedintheIE3Dsincethen.TheIE3Dhasbecomethemostversatile,easytouse,efficientandaccurateelectromagneticsimulationtool.

ThefollowingchaptersprovideatutorialonusingtheIE3D12package.ThefocusisonthepolygonbasedlayouteditorMGRID,objectbasedschematic-layouteditorIE3DLIBRARY,theintegratedcircuitsimulatorMODUA,andthepatterndisplaypost-processorPATTERNVIEW.

FromIE3D11toIE3D12,wehaveseenmuchimprovementonIE3D.OneofthemostimportantimprovementsistheintroductionofAutomaticGeometrytoIE3DFlow（AGIF）.AGIFcontainstheAutomaticGDSIItoIE3DFlowallowinguserstocreatecomplicatedplanarand3DstructuresfromlayoutsinGDSIIformat.ItalsocontainstheCadenceVirtuosotoIE3DFlowforRFICdesigns,andCadenceAllegrotoIE3DFlowforPCBdesigns.TheAGIFflowssimplifythemodelcreationprocesssignificantly.Byjustoneclick,ausercanbuildacomplicatedlayoutconsistingofwirebonds,vias,groundandplaneplaneswiththicknessandsolderballs,pinviasintosome3DmodelssuitableforIE3Dfull-waveEMsimulations.ThesecondimportantimplementationoftheEMSocketallowingIE3DintegratedintoMicrowaveOffice（MWO）fromAppliedWaveResearch,Inc.TheEMSocketallowsuserstorunIE3DsimulationsseamlesslyinsideMWO.ItcombinestheeaseofuseofMWOandpowerfulEMcapabilitiesofIE3D.TheEMSocketismuchimprovedontheIE3D12.

InIE3D11.5,wehaveintroducedtheIE3DFull-waveAcceleratedSimulationTechnologyAlgorithm（FASTA）.IE3DFASTAallowsIE3DtosimulategenerallylargestructuresusingsignificantlyreducedRAMandinafractionofthetimefortheoriginalIE3Dsimulations.IE3DFASTApreservesthefull-wavefeatureofIE3Dwhileitreducesthecomputationaleffortssignificantlywithslightlyreducedaccuracy.

Recentadvancementinmicrowave,wireless,RFandsemiconductortechnologiesrequireEDAimposesnewchallengingtocircuitdesigners.Newdevelopmentrequireshigheraccuracyandreduceddesigncycles.Tomeetthischallenge,ZelandSoftware,Inc.ispleasedtoreleasetheIE3DFull-WaveFastEMDesignKitintheIE3DV12.TheFastEMDesignKitallowsuserstogethighaccuracyfull-wavedesignsdoneinreal-timeatdesigntime.Itsignificantlyreducesthedesigneffortsandimprovesthequalityofhighfrequencydesigns.TheIE3DV12alsoimprovesthesimulationspeedbyafactorof4ormore.Itsupportsmulti-CPUandmulti-corecomputers.

Full-waveEMtuning,optimizationandsynthesisrequireuserstoparameterizestructures.Tosimplifytheparameterizationprocessandenhancethecapabilityofparameterization,wehavefurtherimprovedourschematic-layouteditor,ortheIE3Dlibrary.Wehaveintroducedequation-basedgeometrymodelinginIE3Dlibrary11.x.Now,weintroduceBooleanobjectsandvoidobjectstoallowparameterization,full-waveEMtuning,optimizationandsynthesisofsophisticatedplanarand3DstructuresonIE3Dlibrary.

RFICdesignhasbecomeaveryimportantaspectoffull-waveEMdesigns.OnIE3D12,wehaveimplementedautomaticextractionandoptimizationoflumpedcircuitequivalentcircuitfromIE3Dsimulations.ThefeaturemakesIE3DveryhandyforRFICdesigners.

Thismanualmainlyservesasatutorialmanual.Itdemonstrateshowtheuserscanachievethedesigngoalsthrumanyexamples.

Beforewestarttheactualexamples,wewillprovideabriefintroductioninthetheory.ForthoseuserswedonotwanttoknowthetheoreticalpartoftheIE3D,theycanskipSection1toSection3ofthischapter.Infact,wealsosuggestthoseuserswhodonothavemuchnumericalsimulationexperiencetodelayreadingthefollowingsectionsuntiltheygetmoreknowledgefromthenextafewchapters.

Section1.BasicTheoryandImplementation.

IE3Disafull-waveelectromagneticsolver.ItsolvestheMaxwellEquations,whichgovernthemacroelectromagneticphenomenon.Thereisnomuchassumptioninvolvedexceptthenumericalnatureofthemethod.Therefore,thesolutionisextremelyaccurate.

TheoriginalMaxwell’sEquationsareindifferentialformandthesolutionsoftheequationsaretheelectricfieldandmagneticfieldinthewholespace.Thesolutionsin