hfss边界与端口设置.docxVIP

边界与端口设置

电子科技大学

贾宝富博士

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HFSSBoundaryList

?PerfectEandPerfectH/Natural

?IdealElectricallyorMagneticallyConductingBoundaries

?‘Natural’denotesPerfectE‘cancellation’behavior

?FiniteConductivity

?LossyElectricallyConductingBoundary,withuser-providedconductivity

andpermeability

?Impedance

?Usedforsimulating‘thinfilmresistor’materials,withuser-provided

resistanceandreactancein?/Square

?Radiation

?An‘absorbingboundarycondition,’usedattheperipheryofaprojectin

whichradiationisexpectedsuchasanantennastructure

?Symmetry

?Aboundarywhichenablesmodelingofonlyasub-sectionofastructure

inwhichfieldsymmetrybehaviorisassured.

?“PerfectE”and“PerfectH”subcategories

?MasterandSlave

?‘Linked’boundaryconditionsforunit-cellstudiesofinfinitelyreplicating

geometry(e.g.aslowwavecircuitanantennaarray)

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HFSSBoundaryDescriptions:PerfectEandPerfect

H/Natural

r

E

perpendicular

?Parameters:None

?PerfectEisaperfectelectricalconductor*

?ForcesE-fieldperpendiculartothesurface

PerfectEBoundary*

r

E

parallel

PerfectHBoundary

?Representmetalsurfaces,groundplanes,

idealcavitywalls,etc.

?PerfectHisaperfectmagneticconductor

?ForcesH-fieldperpendiculartosurface,E-

fieldtangential

r

E

continuous

?Doesnotexistintherealworld,but

representsusefulboundaryconstraintfor

modeling

‘Natural’Boundary

?NaturaldenoteseffectofPerfectHapplied

ontopofsomeother(e.g.PerfectE)

boundary

*NOTE:Whenyoudefineasolidobjectasa

‘perf_conductor’intheMaterialSetup,a

PerfectEboundaryconditionisappliedtoits

exteriorsurfaces!!

?‘Deletes’thePerfectEcondition,

permittingbutnotrequiringtangential

electricalfields.

?Opensa‘hole’inthePerfectEplane

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PerfectHfor2DAperture(I)

?MonopoleOveraGround

plane

PerfectH

PerfectHSurfaceInteriortothe

ProblemSpaceBehavesLikean

InfinitelyThin2DAperture

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