hfss convergence

Maxw

Top

w to view information about

appears:

ConNC

Plot

Ansoft HFSS — Convergenceics:

Go Back

Contents

Index

ConvergenceChoose Convergence from the Executive Commands windothe solution.

If you have solved for a driven solution, the following window

vergenceumber of Passesonvergence DataPassTypeFrequencyTetrahedraMaximum Delta SDelta EMag MarginPhase MarginMax Delta FrequencyPlotting

ting Matrix Parameters

ell Online Help System 23 Copyright © 1996-2002 Ansoft Corporation

Maxw

Top

w many adaptive passes

command.

n:

daptive field solution is com-

g solution types may be

er Setup Solution.

e used during the solution.

t have been completed.t have yet to be completed.

, fewer passes than

tion.

ConNC

Plot


Go Back

Contents

Index

Number of PassesThe following fields indicate the solution status in terms of ho(solve — error analysis — refine cycles) are completed:

The total Number of Passes is set using the Setup Solution

Convergence Data The system displays the following information for each solutio

PassThe adaptive pass number. This is displayed only when an aputed.

TypeThe type of solution generated by Ansoft HFSS. The followinlisted:

FrequencyDriven Solutions only.

The frequency at which the problem is driven. This is set und

TetrahedraThe number of tetrahedra in the finite element mesh that wer

Completed Displays the number of adaptive passes thaRemaining Displays the number of adaptive passes tha

Note: If the solutions converge within the specified criteriarequested may be solved.

A Indicates that the solution was an adaptive solution.S Indicates that the solution was a frequency sweep soluP Indicates that the solution was a ports-only solution.




Maxw

TopCon

NC

Plot

between two consecutive

ed and no ports exist.

to the next. This is a mea- pass. This is available only tion process.

nce between the S-parame-s specified in the S-Matrix e Convergence panel is the rgin is defined as:

dicates the solution’s prox-ged within the target delta


Go Back

Contents

Index



Maximum Delta SIf ports have been defined.

The maximum change in the magnitude of the S-parameters passes. The maximum delta S is defined as:

where:

• i and j cover all matrix entries.• N represents the pass number.

For the first pass the maximum delta S is labeled N/A.

Delta EIf voltage, current sources, or incident waves have been defin

The difference in the relative error from one adaptive solutionsure of the stability of the computed field values from pass toafter the system completes two iterations of the adaptive solu

Mag MarginFor each element in the matrix, the mag margin is the differeter delta magnitude and the target delta magnitude, which waConvergence Criteria panel. The mag margin reported in thmaximum of these values over the entire matrix. The mag ma

where Mij is the matrix convergence entry. The mag margin inimity to the target delta magnitude. If the solution has convermagnitude, a value of zero will be reported for the pass.

Maxij mag SNij

SN 1–ij

–

Maxij magSNijmagS

N 1–ij

– magMij–


Maxw

TopCon

NC

Plot

ence between the S-param-fied in the S-Matrix Conver-vergence panel is the

argin is defined as:

indicates the solution’s ged within the target delta

daptive solution to the next. from pass to pass and is ns of the adaptive solution

y is the largest percent e calculated modes.

the greater of two quan-he frequency over all the inary part of the fre-


Go Back

Contents

Index



Phase MarginFor each element in the matrix, the phase margin is the differeter delta phase and the target delta phase, which was specigence Criteria panel. The phase margin reported in the Conmaximum of these values over the entire matrix. The phase m

where Mij is the matrix convergence entry. The phase marginproximity to the target delta phase. If the solution has converphase, a value of zero will be reported for the pass.

Max Delta FrequencyEigenmode Solutions only.

The percent difference in the resonant frequencies from one aThis is a measure of the stability of the computed frequenciesavailable only after the system completes two or more iteratioprocess.

Note: For lossless problems, the maximum delta frequencchange in the real part of the frequency for any of th

For lossy problems, the maximum delta frequency istities: the largest percent change in the real part of tmodes, and the largest percent change in the imagquency.

Maxij phaseSNijphaseS

N 1–ij

– phaseMij–


Maxw

TopCon

NC

Plot

lows you to view a graphical

following:

r previous plots.

our view of the plot. Use the oints on the plot.

in a table. This is the default oes not fit on the screen,

that doesn’t appear.ahedra versus adaptive

nge in the S-parameters ver-lable for Driven Solutions in

e relative error from one

the difference in the reso- solution to the next.e magnitudes of the S-

delta S.e phases of the S-parame-

.arameters, Zpi, and Gamma

st have solved at least maximum delta E, or least three passes.


Go Back

Contents

Index



PlottingYou may also plot the convergence data versus pass. This alrepresentation of the solution’s convergence.

> To plot the convergence data:• From the Convergence Display menu, select one of the

The plot appears in the model window, replacing any tables o

Use the Zoom In, Zoom Out, and Fit All buttons to change yShow Coords button to display information about selected p

Table Displays all of the convergence datasetting. If all the convergence data duse the scroll bars to view the data

Plot Tetrahedra Displays a plot of the number of tetrpass.

Plot Max Delta S Displays a plot of the maximum chasus adaptive pass. This is only avaiwhich ports have been defined.

Plot Delta E Displays a plot of the difference in thadaptive solution to the next.

Plot Max Delta Freq

Eigenmodes only. Displays a plot ofnant frequencies from one adaptive

Plot MagnitudeMargin

Displays a plot of the difference of thparameters normalized to the target

Plot Phase Margin Displays a plot of the difference of thters normalized to the target delta S

Plot MatrixParameters

Displays the convergence of the S-pversus adaptive pass.

Note: To plot the tetrahedra or matrix parameters, you mutwo adaptive passes. To plot the maximum delta S, maximum delta frequency, you must have solved at


Maxw

TopConPlot

reate a plot of selected

The following window

ix Parameter list.

Terminal S-matrix to


Go Back

Contents

More

Index

vergenceting Matrix Parameters

Plotting Matrix ParametersChoose Convergence Display/Plot Matrix Parameters to cmatrix parameters from the adaptive pass solutions.

> To plot the matrix parameters: 1. Choose Convergence Display/Plot Matrix Parameters.

appears:

2. Select the matrix parameters to plot from the Select MatrChoose Clear at any time to deselect

3. Select the type of plot to create. 4. Optionally, if you have defined ports and terminals, select

plot the terminal S-matrix for the problem.


Maxw

TopConPlo

ancel to cancel the plot.

iewing the plot when added to the plot.


Go Back

Contents

Index

vergencetting Matrix Parameters

5. Choose OK to accept the settings and create the plot, or CYou return to the Executive Commands window.

Note: As with the tabular convergence display, if you are vanother adaptive pass completes, data for it will be


hfss convergence

Documents