反射面天线仿真

电子科技大学贾宝富博士阵列天线仿真阵列天线仿真ArrayOverviewAnalysisApproachesUnitCellAnalysiswithMaster/SlaveBoundariesUnitCellSimplificationMaster/SlaveBoundariesUnitCellCreationVerifyingtheUnitCellGeometryFloquetPortsOverviewFloquetModeVisualizationFloquetPorts:DeterminingtheModestoIncludeModesCalculatorFloquetPortSetupFloquetPortSetupWhatiftheLatticeisTriangularFloquetPortSetupFloquetPortSetupFloquetPortSetupResults–MatrixDataResults:ReturnLoss/InsertionLossFiniteArrayAnalysisChallengesforLargeFiniteArrayModelingDomainDecompositionOverviewSolution:FiniteArrayDomainDecompositionFiniteArrayDDMToolAdvantagesHowItWorks!!!HowItWorks!!!HowItWorks!!!HowItWorks!!!ProbeFedPatchArraywithFeedNetworkFinitePhasedArraySetupUsingDDMUnitcellisanalyzedtocreatemeshUnitcellmeshisthenreplicatedtoformremainingelementsinthearrayMutualCouplingDataActiveReturnLosswithPhaseTaperEmbeddedElementPatternsArrayPatternintheE-PlaneArrayhasnophaseshifttapersothebeamispointedtowardboresiteSidelobeLevelsare-10.86dBand-13.23dBintheE&HPlanes.ArrayPatternScannedto45ointheE-PlaneExplicitlySolvedPatchArrayvs.DDMComparison用CSTMicrowaveStudio仿真阵列天线OutlineAntennasimulationDifferentsolversfordifferentantennasAntennaarraysimulationSmallarraysFeednetworksLargearraysActiveelementpatternOnlinedemoAsmallselection...AntennaSimulationDifferentantennatypesrequiredifferentsolvertechnologies.TransientSolverFrequencySolverIntegralEquationSolver阵列天线仿真基本方法由单个天线计算天线阵；未考虑天线之间的耦合。由整体模型单独激励计算辐射场；计算涉及天线结构之间的影响。整体模型，同时激励；同时涉及结构和激励状态的影响。计算模型单个天线的设置求解设置求解设置天线阵设置计算结果单独计算用后处理叠加求解设置频率设置与前面相同求解设置计算结果计算结果计算结果计算结果计算结果设置后处理计算结果直接计算方式模型、边界条件和场观察器等与前面的设置相同。求解设置计算结果计算结果AntennaArraysSmallArraysDistributedComputing(DC)MultipleElementExcitationArrayFeedingNetworksLargeArraysInfiniteArrayInfiniteArrayFarfieldArrayInfiniteArrayActiveElementPatternFiniteArrayAnalysisCSTArrayWizardSummary用HFSS仿真阵列天线序言HFSS计算实际的阵列天线是基于阵列天线中的一个单元。对于模式驱动和端口驱动的设计，使用分布仿真过程。使你能够快速定义、显示和仿真阵列天线设计。设计步骤1.Drawtheunitcell,containingallappropriateboundariesandsourcedefinitions.2.Createtheantennaarray,includingname,dimensions,masterandslaveboundarieswhereneededforconformalmeshing,andselectionofrowandcolumnmaster/slavepairsforimplicitdefinitionoflatticepropagationvectors.Designatewhichcellsareactive,passive,andpadding.3.Setupthedistributedprocessorpool.DesignswitharraysrequireHPClicenses.4.ProvideamemorystatisticfortheamountofRAMguaranteedoneachDSOprocessor.CreatingaUnitCellforanArrayTheunitcellcanberectangular,parallelogramorhexagonal.Youmustdefineappropriatemasterandslaveboundaries,aswellasotherboundariesrequiredforthemodel.Deletingamasterorslaveboundarythatisreferencedbyanexistingarrayalsodeletesthearray.Typically,youdefinemasterandslaveboundariesasoppositesidesofacell.简单阵列的单元电路Insuchcases,withmasterandslaveboundariesonoppositesides,thearraysidesalign.Inmakingsourcedefinitionsforunitcellfortheunitcell,youcannotassignaFloquetport.•EachdrivenModalordrivenTerminaldesigncancontainasinglearray.复杂阵列设置However,youcanarrangemasterandslaveboundariestocreateanoffsetarray.Insuchcases,youcreatebothamasterandaslaveboundaryforcorrespondingsectionsofacellside,andassignmasterandslavetocreateoffsetalignment.Withallboundariesdefinedinthismanner,thearraycanbeoffset.CreateArrayCommandTheCreateArraycommandisenabledforModalandDrivenTerminalproblemsafteryouhaveassignedmasterandslaveboundariestoyourunitcellmodel.Youcanaccessthecommandinthreeways:clickHFSSModelCreateArray,right-clickontheModeliconintheProjecttreeandselectCreateArrayfromtheshortcutmenu,orselecttheunitcellinthemodelerwindow,andselectCreateArrayfromtheshort-cutmenu.ThisdisplaystheRegularPlanarArraydialogwhereyouspecifyparametersforNumberofCells,UnitCellPositionandLatticeVectors.CreateArrayCommandIfyouhaveVisibleenabled,youcanseeanychanges.ToDefineLatticeVectordirectionsforAandBVectors,specifythemasterboundary.Todefinethearraysize,fortheAandBvectors,specifythenumberofcellsforeachrowandcolumn,respectively.Forexample,thefollowingfigureshowstheresultswhentheinitialLatticeVectorsareswapped.tTocreateanirregulararray,selecttheActiveCellstab,selecttheradiobuttonforMousemakescellasPaddingCreateArrayCommandOnceyouhavespecifiedtheparameters,theArrayobjectappearsintheProjecttreeundertheModel.OnlyoneArrayispermittedforamodel.TheCreateArraycommandisdisabledifanarrayisdefined.ByselectingtheArrayiconintheProjecttree,youright-clickfortheshortcutmenu.CreateArrayCommandSelectingDeleteremovesthearrayfromtheModel.SelectingPropertiesdisplaystheRegularPlanarArraydialog.SelectingVisualizeArrayletsyoutogglethearraydisplay.Acheckmarkindicatesthatthearrayisbeingdisplayed.WiththeArrayiconintheProjecttreeselected,ifyouhaveadockedPropertieswindowdisplayed,youcanseeandeditArrayProperties.AlleditsareundoableandinformationalmessageswillbepostedtotheMessagewindowwhendesigndataisdeleted.SetupandRunanArraySimulationThereisnochangeintheGUIforsettinguptheadaptivesimulationfordesignswithanarray.However,thesolutionquantitiesofthevirtualcellswillbeavailableforconvergencesetup(Inbothadaptiv