例題：對稱振子一、創(chuàng)建工程FromtheProjectManagerwindowRight-ClicktheprojectfileandselectSaveAsfromthesubmenu.Namethefile“dipole”andClickSave.一、創(chuàng)建工程Tobeginworkingwithgeometries,youmustinsertanHFSSdesign.Right-ClicktheprojectfileandselectInsert->InsertHFSSDesignfromthemenu.一、創(chuàng)建工程DuetothenatureofthisdesignwewilluseDrivenModalasthesolutiontype.FromtheHFSSmenuselectSolutionTypeandDrivenModal.Theunitsarechosenas

mmbychoosingtheheading3DmodelerandUnitsfromthemenu.二、創(chuàng)建模型HFSSreliesonvariablesforanyparameterization/optimizationwithintheproject.Variablesalsoholdmanyotherbenefitswhichwillmakethemnecessaryforallprojects.?FixedRatios(length,width,height)areeasilymaintainedusingvariables.?Optimetricsusevariablestooptimizethedesignaccordingtouser-definedcriteria.?Alldimensionscanbequicklychangedinonewindowasopposedtoalteringeachobjectindividually.二、創(chuàng)建模型ClicktheHFSSheadingandselectDesignPropertiesatthebottomofthemenu.Thiswillopenthevariabletable.AddallvariablesshownbelowbyselectingAdd.Besuretoincludeunitsasneeded.二、創(chuàng)建模型WewillstartbycreatingthedipoleelementusingtheDrawCylinderbuttonfromthetoolbar.Choose3Arbitrarypointsinsidethedrawingarea.Thesepointswillbedefinedusingthevariablescreatedpreviouslysothereisnoneedtospecifypoints.Followtheformatbelowforstructuresize.Givethenamedip1

tothisobject.AssignthematerialPEC

andclickOK.PEC(PerfectElectricConductor)willcreateidealconditionsfortheelement.UndertheCommandtab,enterthefollowinginformation:二、創(chuàng)建模型Thenextcommandisessentialwhenbuildingsymmetricstructures.Right-ClickthedrawingareaandselectEdit>Duplicate>AroundAxis.二、創(chuàng)建模型Amirrorimageisproducedbyenterthefollowing:Thedipolestructureisillustratedbelow:三、創(chuàng)建集總端口激勵I(lǐng)nthesectiontheuserwillcreateaLumpedGapSource.Thiswillprovideanexcitationtothedipolestructure.BeginbyselectingtheYZplanefromthetoolbar.Usingthe3Dtoolbar,clickDrawRectangleandplacetwoarbitrarypointswithinthemodelarea.三、創(chuàng)建集總端口激勵Enterthefollowing:ClicktheCommandtabandenterthefollowing:三、創(chuàng)建集總端口激勵Pleasenotethatthevariablegap_srcwaschosenrelativelysmallincomparisontothedipolestructure.Thiswasdonetominimizeeffectsduetothesourceandplaceemphasisuponthestructure.Thesourceisdepictedbelow.三、創(chuàng)建集總端口激勵Withthesourcegeometryinplace,theusermustprovideanexcitation.Alumpedportwillbeusedforthedipolemodel.Thisexcitationiscommonlyusedwhenthefarfieldregionisofprimaryinterest.Intheprojectexplorer,right-clickExcitation->Assign->LumpedPort.三、創(chuàng)建集總端口激勵四、創(chuàng)建輻射邊界Inthissection,aradiationboundaryiscreatedsothatfarfieldinformationmaybeextractedfromthestructure.Toobtainthebestresult,acylindricalairboundaryisdefinedwithadistanceofλ/4.Fromthetoolbar,selectDrawCylinderandchoose3arbitrarypointswithinthemodelwindow.四、創(chuàng)建輻射邊界Enterthefollowing:ClicktheCommandtabandenterthefollowing:Assumingallstepswereproperlycompleted,theboundaryshouldresembletheillustrationbelow:四、創(chuàng)建輻射邊界Withthegeometrycomplete,theactualradiationboundarymaynowbeassigned.Fromthe3Dtoolbarselectfacefromthedropdownwindowasshownbelow.Clickandselectallfacesasfollows:四、創(chuàng)建輻射邊界Withallfacesselected,right-clicktheBoundaryiconintheobjectexplorerandselectBoundary->Assign->Radiation.LeavethedefaultnameRad1andclickOK.五、添加求解設(shè)置Inthissectionasolutionmustbedefinedtodisplaythedesireddata.Weareprimarilyinterestedinthefrequencyresponseofthestructure.WewillalsoexploreHFSS'sabilitytocalculategeneralantennaparameterssuchasdirectivity,radiationresistance,radiationefficiency,etc....Fromtheprojectexplorer,selectAnalysis->AddSolutionSetup.Enterthefollowing:Leaveallothersettingsasdefault.ClickOK

whencomplete.五、添加求解設(shè)置Toviewthefrequencyresponseofthestructure,afrequencysweepmustbedefined.FromtheprojectexplorerselectSetup1->AddSweep.Enterthefollowing:五、添加求解設(shè)置Atthispoint,theusershouldbereadytoanalyzethestructure.Beforerunningtheanalysis,alwaysverifytheprojectbyselectingfromthe3Dtoolbar.Ifeverythingiscorrecttheusershouldsee:AnalyzethestructurebyclickingAllow5-20minutesfortheanalysis,dependingonthemachine.六、創(chuàng)建結(jié)果Aftercompletionoftheanalysis,wewillcreateareporttodisplayboththe

resonantfrequencyandalsotheradiationpattern.ClickontheheadingHFSS

andselectResults->CreateReports.六、創(chuàng)建結(jié)果SelectthefollowinghighlightedparametersandclickAddTracetoload