用HFSS仿真Ka波段双工器.pdf

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1、Ku-BandDiplexerSimulationUsingHFSSAnilAgrawal2003HFSSUsersWorkshopWIRELESSBUSINESSSOLUTIONSGoalsoftheHFSSSimulation•Predicttheactualperformanceofthediplexer•ComparetheresultswithotherplanarEMtools•Comparetheresultswiththemeasureddata•Understandandresolvethedif

2、ferencesAnilAgrawal2003HFSSUsersWorkshopAllMaterialPropertyofQualcomm,Inc.2WIRELESSBUSINESSSOLUTIONSHFSSVersion&ComputerResourcesUsed•HFSSv8.5withServicePack1•Pentium4,1.80GHzPCwithWindowsXPProfessional•RAM:1.5GB•Prefs.inifilemodifiedtoincreasetheSoftMemoryLim

3、it»DIRECT_SOLVERMemLimitSoft1280000AnilAgrawal2003HFSSUsersWorkshopAllMaterialPropertyofQualcomm,Inc.3WIRELESSBUSINESSSOLUTIONSKu-BandDiplexer3DModelinHFSSAnilAgrawal2003HFSSUsersWorkshopAllMaterialPropertyofQualcomm,Inc.4WIRELESSBUSINESSSOLUTIONSDiplexerModel

4、ingProcedureinHFSS•DiplexergeometryexistedinDXFformatincludingthetestfixture•DXFfilewasconvertedto2D(.sm2)Maxwellfiles•Importedthe.sm2files,onebyone,andchangedtheattributesasneeded•UsedSolids,Sweep,AlongVectorcommandstocreate3Dobjects•Createdthe“Airbox”andthe“

5、PortFaces”•AssignedMaterials,PortsandBoundaries•SetupSolutionAnilAgrawal2003HFSSUsersWorkshopAllMaterialPropertyofQualcomm,Inc.5WIRELESSBUSINESSSOLUTIONSDXFto.sm2Translation•Options(-s-ui)wasused.•Itwasfoundthattheimportinto3DModelerdidn’tquiteworkwellwithoutt

6、he“-ui”optioneventhoughtheunitsweresettoinchesintheoriginalDXFfileaswellasin3DModelerAnilAgrawal2003HFSSUsersWorkshopAllMaterialPropertyofQualcomm,Inc.6WIRELESSBUSINESSSOLUTIONSHFSSSolutionSetup•Adaptivemeshingforaccuracy•“Fast”sweepforfastfrequencysweep»Eigen

7、valueproblemsolvedforcenterfrequency»Fieldsolutionextrapolatedacrossthefrequencyrange»Allows3DPostProcessortodisplayfieldsforallfrequencyentriesintherangeAnilAgrawal2003HFSSUsersWorkshopAllMaterialPropertyofQualcomm,Inc.7WIRELESSBUSINESSSOLUTIONSSomeTips&Guide

8、lines•DXFImport:»Makesuretheobjects/polygonsintheDXFfilearenotgrouped;ungroupedthemusing“explode”commandifusingAutoCAD»Makesureyouknowtheunitsintheoriginaldrawingfile»Usethe“Option