Getting Started with SIwave: A PCB Model · 2020. 6. 15. · GettingStartedwithSIwave:APCBModel...

Getting Started with SIwave: A PCB Model

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Release 2020 R1 January 2020

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Getting Started with SIwave: A PCBModel

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Conventions Used in this Guide

Please take amoment to review how instructions and other useful information are presented in thisguide.

l Procedures are presented as numbered lists. A single bullet indicates that the procedure hasonly one step.

l Bold type is used for the following:o Keyboard entries that should be typed in their entirety exactly as shown. For example, "copyfile1" means the word copymust be typed, then a spacemust be typed, and then file1mustbe typed.

o On-screen prompts andmessages, names of options and text boxes, andmenu commands.Menu commands are often separated by carats. For example, "clickHFSS>Excitations>Assign>Wave Port."

o Labeled keys on the computer keyboard. For example, "PressEnter" means to press the keylabeledEnter.

l Italic type is used for the following:o Emphasis.o The titles of publications.o Keyboard entries when a name or a variablemust be typed in place of the words in italics. Forexample, "copy file name" the word copy must be typed, then a spacemust be typed, andthen name of the file must be typed.

l The plus sign (+) is used between keyboard keys to indicate that you should press the keys atthe same time. For example, "Press Shift+F1"means to press the Shift key and the F1 key atthe same time.

Ribbons, menu bars, and short-cut menus are threemethods that can be used to see whatcommands are available in the application.

l Ribbons are the rectangular area on top of the application window and contain multiple tabs.Each tab has relevant commands that are organized, grouped, and labeled. An example of atypical user interaction is as follows:

"On theDraw ribbon tab, click theBox primitive" means you can click theBox icon on theDrawtab and execute theBox command to draw a box.

l Themenu bar (located above the ribbon) is a group of themain commands of an applicationarranged by category such File, Edit, View, Project, etc. An example of a typical userinteraction is as follows:

"On the Filemenu, click theOpen Examples command"means you can click the Filemenu andthen clickOpen Examples to launch the window.

l Another alternative is to use the short-cut menu that appears when you click the right-mousebutton. An example of a typical user interaction is as follows:

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"Right-click and selectAssign Excitation>Wave Port" meanswhen you click the right-mousebutton with an object face selected, you can execute the excitation commands from the short-cutmenu (and the corresponding sub-menus).

Getting Help: ANSYS Technical Support

For information about ANSYS Technical Support, go to the ANSYS corporate Support website,https://www.ansys.com/Support. You can also contact your ANSYS account manager in order toobtain this information.

All ANSYS software files are ASCII text and can be sent conveniently by e-mail. When reportingdifficulties, it is extremely helpful to include very specific information about what stepswere taken orwhat stages the simulation reached, including software files as applicable. This allowsmore rapidand effective debugging.

Help Menu

To access help from themenu bar, clickHelp and select from themenu:

Contents - click here to open the contents of the help.

Search - click here to open the search function of the online help.

Index - click here to open the index of the help.

Context-Sensitive Help

To access help from the user interface, do one of the following:

l To open a help topic about a specificmenu command, pressShift+F1, and then click thecommand or toolbar icon.

l To open a help topic about a specific dialog box, open the window, and then pressF1.

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https://www.ansys.com/Support/

Table of ContentsTable of Contents Contents-1

1 - Introduction 1-1

The PCBModel 1-1

Expected Results 1-1

2 - Setting Up the Design 2-1

Open SIwave and Import the Project 2-1

Set PCB Element Visibility 2-2

View Layers 2-3

View the Layer Stack 2-4

Identify Power andGround Nets 2-5

Run a Validation Check 2-7

3 - Resonant Modes Analysis 3-1

RunResonant Modes Analysis 3-1

View Resonant Modes as 2D Plots 3-4

4 - SIwave SYZ Analysis 4-1

Define Pin Groups for GND and VCC 4-1

Define a Port between the VCC andGND Pin Groups 4-3

Generate SYZ Parameters 4-4

View Impedance Response 4-6

5 - PSI SYZ Analysis 5-1

Define Pin Groups and Ports 5-1

Generate SYZ parameters using PSI 5-1

View Impedance Response 5-4

6 - PSI AC Current Analysis 6-1

Create Voltage Source 6-1

Generate AC Currents 6-2


Contents-1




View AC Currents as 2D Plots 6-4

Export Total Radiated Power 6-5

7 - Frequency Sweep of Voltages 7-1

Disable Voltage Sources 7-1

Create Current Source 7-1

Create a Voltage Probe 7-2

Run SIwave Frequency Sweep 7-4

Plot Probe Voltage 7-5

Conclusion 7-5

Index Index-1

Contents-2



1 - IntroductionThisGetting Started Guide is intended to quickly familiarize you with the capabilities of SIwave.This guide leads you step-by-step through importing a PCB design, setting up for and performingthree SIwave analyses, and viewing the results of the simulations.

By following the steps in this guide, you learn how to perform the following tasks in SIwave:

l Import a geometric PCBmodel.l Validate the design.l Run three SIwave simulations: Resonant Modes analysis, SYZ sweep, and frequency sweepof voltages.

l Add ports, sources, and probes to the PCB as appropriate for each analysis.l Specify parameter settings for each type of analysis.l Create 2D plots of the results, and compare the results from the three solutions.

The PCB ModelThe PCBmodel consists of an 8-layer PCB. Layers 2 and 7 are planes for power and ground. ThePCBmodel is shown below.

Expected ResultsThe analyses demonstrate how frequency-dependent impedance and voltage differences betweenthe power and ground planes can cause signal integrity issues such as voltage ripple. The resonantmodes identified in the resonant frequency analysis can be clearly seen in the plots of impedancefrom the SYZ analysis and the graphs of voltage swings from the frequency sweep analysis.


Introduction 1-1



PDF layout 1-2




2 - Setting Up the DesignIn this chapter, you will complete the following tasks:

l Import and save a project.l Set the visibility of geometric and circuit elements.l View the layers workspace and layer stack.l View the nets workspace and identify the power/ground nets.l Run a validation check on the design.

Open SIwave and Import the ProjectTo begin, we import the PCB design and its components fromANSYS Neutral Files. Thesemightrepresent the outputs from a 3rd-party ECAD system generated via ALinks. The project filescontain information about the geometry, PCB layer stackup, pad stack, via construction, boardmaterials, and the discrete components.

1. Double-click theSIwave icon on your desktop to launch SIwave.2. Click Import > ANF.

The Openwindow appears.

3. Browse to the following location:

\Program Files\AnsysEM\AnsysEM20.1\Win64\Examples\SIwave

Note:

The field for the operating systemwill reflect your installation.

4. Select the file siwave_board.anf.5. ClickOpen.

TheSelect nets to import from siwave_boardwindow appears.

6. Click Import configuration.Import the component file for the project’s components.

If a Component Import Overwrite message appears, clickYes to All to overwrite any existingnames.

If your settings are configured to defaults, the SIwaveWorkflow Wizard opens. Close it to seethe SIwaveModeling workspace, which should look like this:


Setting Up the Design 2-1




7. ClickFile > Save As.TheSave Aswindow appears.

8. Browse to a directory where you have write permission. Enter a name for this project assiwave_board_test1.siw.

9. ClickSave.

Next, we'll adjust layer visibility.

Set PCB Element Visibility1. Turn on visibility for Geometric Elements such as planes, traces, pads, and vias. ClickView

and select the options from theShow/Hide tab .2. Turn on visibility for Circuit Elements such as resistors, capacitors, inductors, sources, and

ports ClickView > Circuit Elements Values > All On.





View LayersThe Layersworkspace and the Layer Stack control the PCB geometry andmaterials in the layerstackup.

1. In the Layersworkspace at the upper right of the SIwave window, use the check boxes at thetop to turn on full visibility for all layers, as shown below.

The SIwave desktop should look like this:





2. Use the colored rectangles to toggle between outline and solid fill for each layer. In thisexample, we'll leave only the Surface layer filled.

View the Layer Stack1. If you wish to view the Layer Stack for the board, click Home>Layer Stackup Editor.

The Layer Stackup Editor appears.





2. Here, you can change the properties for one or more layers. For now, you need only be awarethat this window exists. Later, we will focus on the interactions between layers L2 and L7.

Identify Power and Ground NetsExplore theNets andSelected Netswindows at the left side of the SIwave desktop.





1. By default, the Netswindow displays theSingle Ended Nets tab.2. Check the box next to any net's name to select that net and highlight it on themodel.

Before doing any simulations, youmust identify the power and ground nets in the design:

1. In theNetswindow, click thePower/Ground Identification tab.2. You canmove nets from theNon Power/Ground Nets list to thePower/Ground Nets list

and vice versa using the up and down arrows. Or, you can click theAuto-Identify button tohave SIwave identify power and ground nets by name.

Run a Validation CheckRun a validation check of the PCB design before running any simulations. This check identifiesseveral common layout and design errors.





1. ClickTools > Validation Check.2. ClickOK to start the check. The progressmonitor shows the status of the check.

When the process is finished, theValidation Check Resultswindow appears.

If there are errors or warnings, SIwavemay offer to fix the problems as part of the validationcheck results.





3. ClickOK to have SIwave fix the problems.4. ClickFile > Save to save the updated PCB design.

The next step is to run solvers on the PCB. Proceed to the next topic to try running a ResonantModes analysis.




PDF layout 2-10




3 - Resonant Modes AnalysisIn this chapter you will complete the following tasks:

l Run aResonant Modes analysisl View the results as a data tablel View the results as 2D plots on the PCBmodel

Run Resonant Modes AnalysisTraces routed through power and ground planes can exhibit signal integrity problems. Theresonant mode calculation is the first step in identifying non-ideal plane behavior that can affectsignal integrity.

Set up an SIwave Resonant Modes analysis:

1. ClickSimulation > Compute Resonant Modes.2. Verify thatMinimum Frequency is set to 2.55238E+08.3. Set theMaximum Frequency to 2e9 (2 GHz).


Resonant Modes Analysis 3-1




4. Set the # of Modes to compute to 10.

5. ClickLaunch to launch the analysis.The progress bar shows the analysis running.When it has finished, the analysis appears in theResultswindow:





6. Double-clickResonant Mode Sim 1 to view the results in tabular format.

View Resonant Modes as 2D PlotsYou can view the resonant modes as two-dimensional plots overlaid on the PCD design.We shallplot the voltage differences between layers 2 and 7, the power and ground planes.

1. In the center panel of theResonant Modes(Resonant Mode Sim 1) results window, use thedrop-downmenus under Plot voltage difference between planes on to select L2 and L7respectively.

2. ClickCompute to generate the 2D plot data from the solution data. The lower part of thewindow shows themodes available for plotting on the PCB design.





The bottom of theResonant Modes(Resonant Mode Sim 1)window populates with tenmodes of resonant frequencies, and the underlying SIwave desktop updates to displayMode1.

3. Click on each row in turn to see the voltage difference as a color map of the PCB. As indicatedon the left, areaswith large positive voltages appear as red, while areaswith large negativevoltages appear as blue.

4. To view themodes in sequential animation, clickPhase Animation.ThePhase Animationwindow opens.





5. Enter the desired information and clickGenerate Frames.6. Click through the frames one by one to change the underlying desktop to that frame, or use the

Play andPause buttons to control the animation.7. ClickClose to terminate the animation.8. ClickClose again to close theResultswindow.9. Click File > Save to save the design with your Resonant Modes analysis results.

Next, we'll perform an SYZ analysis.




4 - SIwave SYZ AnalysisIn this chapter, you will complete the following tasks:

l Define Pin Groups for GND and VCCl Define a Port between the pin groupsl Generate the SYZ-parameters for selected power supply netsl Display the frequency-dependent impedance of the planes on an X-Y plot

Define Pin Groups for GND and VCCLaunch the Pin GroupManager:

1. ClickTools > Create/Manage Pin Groups.TheCreate/Manage Pin Groupswindow appears.

Define a pin group for theGND net:


SIwave SYZ Analysis 4-1




1. From thePart Namemenu, selectMACH230_SMSOCKETAMD.2. From the Reference Designator list, selectU41.3. In theNets list, ensure that the check box next toGND is selected, and that no other nets are

selected.4. ClickCreate Pin Group(s).

The Pin Group appears in thePin Group List.

Next, define a pin group for theVCCnet:

1. In theNets list, deselect the check box next toGND and select the check box next toVCC.Ensure that no other check boxes are selected.

2. ClickCreate Pin Group(s).Both the GND andVCC pin groups should now appear in the Pin Group List.

3. ClickClose.





Define a Port between the VCC and GND Pin GroupsDefine a port on component U41.

1. ClickTools > Generate Circuit Element on Components.TheCircuit Element Generation Dialog appears.

2. In thePositive Terminal Component section, use thePart Name drop-downmenu to selectMACH230_SMSOCKETAMD and theRef Des drop-downmenu to selectU41.

3. In theReference Terminal Component section, check the Same as Positive Terminalcheck box, which will populate the Reference Terminal Component fields with the sameinformation.





4. In theCircuit Element Positive Terminal section, expand thePin Groups list and select theU41_VCC_Group pin group.

5. In theCircuit Element Reference Terminal section, expand thePin Groups list and selecttheU41_GND_Group pin group.

6. In theCircuit Element Type section, select thePort radio button.7. ClickCreate.

ThePort Propertieswindow appears.

8. Shorten the name toU41_VCC.9. Set theReference Impedance to 1Ohm.10. ClickOK to accept the port definition.11. ClickOK to exit theCircuit Element Generationwindow.

The port definition is now set, and we can begin to generate SYZ parameters.

Generate SYZ ParametersNext, we calculate the frequency-dependent impedance response at port U41_VCC.

The active components on the PCB draw current through the power supply nets, such as VCC. Ifthe impedance of the VCC net is too large, ripple voltagemay be induced between VCC andGround when the components switch. The frequencies identified byResonant Mode analysiscorrespond to peaks in the impedance of the power supply VCC net.

1. SelectSimulation > Compute SYZ Parameters.TheCompute SYZ-parameterswindow appears, populated with default settings.





2. In the Frequency Range Setup section, set theStart Freq to 0.3. Set the Stop Freq to 1e9 (1 GHz). Note that theMin Rise/Fall Time value changes to fit the

maximum frequency.4. Set theNum. Points to 200.5. Set theDistribution to Linear.





6. In theSweep Selection section, selectDiscrete Sweep.7. ClickLaunch to launch the SYZ analysis.

The progress bar indicates that the analysis is being performed.When it has finished, we can viewthe impedance response.

View Impedance ResponseNext, view the frequency-dependent impedance response.

1. Click theResults tab. In the SIwave section, click theSYZ icon to access its drop-downmenu.SelectSYZ Sweep 1 > Plot Magnitude....TheS-parameter Plotwindow opens.

2. Click the Z-parameter Plot tab at the bottom of the window.

The window changes to Z-parameter Plot.

3. In theMatrix Entries to Plot section, use the check boxes in thePlot column to select yourport(s). In this guide, you have only defined one port, but it is possible to displaymultiple plots.

4. Ensure theSelect Self Terms check box is selected. You are only plotting one port, so onlythe self terms are applicable.

The plot of impedance versus frequency populates:





5. To change the scale of either the vertical or horizontal axis, double-click an axis label. To do so,double-click any of the vertical axis labels.

TheAxis Attributeswindow opens, and the information can be adjusted as desired.





6. Close the report.7. ClickFile > Save to save the project with the impedance result.

Next, we'll perform a PSI SYZ Analysis.




5 - PSI SYZ AnalysisIn this chapter, you will complete the following tasks:

l Generate the SYZ parameters for selected power supply nets using the PSI solverl Display the frequency-dependent impedance of the planes on an X-Y plot

Define Pin Groups and PortsThe PSI solver uses the same pin groups and port settings as the SIwave SYZ analysis. If you havenot yet completed the previous chapter (SIwave SYZ Analysis), please do so to set up your pingroups and ports.

Generate SYZ parameters using PSINext, calculate the frequency-dependent impedance response at port U41_VCC using the 3D full-wave PSI solver.

1. Click theSimulation tab. In thePSI section, clickOptions.ThePSI Optionswindow appears.


PSI SYZ Analysis 5-1




2. Ensure that Local Analysis is selected. In the box below, use the up and down arrows tochange the number of cores to use. To use all cores, press the down button untilALLappears.

Important:

For best performance, ANSYS recommends at least 8, and optimally 12-16 cores.

3. ClickOK to exit thePSI Optionswindow.4. ClickSimulation. In thePSI section, clickCompute SYZ Parameters.

TheCompute SYZ-parameters using PSIwindow opens.





5. Ensure theStart Freq is set to 10MHz.6. Set theStop Freq to 1GHz.7. Under Sweep Options, select Interpolating Sweep (AFS), and select Fast Sweep and

Adaptive Sampling. The Fast Sweep algorithm improves run time by requiring fewersamples to simulate, but usesmorememory. Fast Sweepmay not be used if insufficientmemory is available.





8. Click the Launch button to launch the PSI SYZ analysis.The progress bar indicates that the analysis is in progress. When it has finished, you can viewthe impedance response.

View Impedance ResponseTo view the frequency-dependent impedance response:

1. In theResultswindow, double-clickPSI S-parameter Sweep. Alternately, if you have hiddenyour Results window, click theResults tab. In the PSI section, clickSYZ > PSI S-ParameterSweep > Plot Magnitude.

TheY-parameter Plotwindow opens.

2. Click the Z-parameter Plot tab to view the plot.

3. ClickFile > Save to save the project with the PSI SYZ result.




6 - PSI AC Current AnalysisIn this chapter, you will complete the following tasks:

l Calculate the AC currents on the selected power supply netsl View the current distributions as 2D plots on the PCB modell Compare the results with the resonant mode and S-parametersl Export the total radiated power

Create Voltage SourceThe AC Current analysis requires one or more sources as excitations. Because the analysis resultis a current, the effect of the changing plane impedance will bemost clear if a constant voltageexcitation is used. To create a voltage source:

1. ClickTools > Generate Circuit Element on Components.TheCircuit Element Generation window appears.

2. In thePositive Terminal Component section, use thePart Name drop-downmenu to selectMACH230_SMSOCKETAMD and theRef Des drop-downmenu to selectU41.

3. In theReference Terminal Component section, check theSame as Positive Terminalcheck box to select the same.

4. In theCircuit Element Positive Terminal section, expand thePin Groups option and selectU41_VCC_Group.

5. In theCircuit Element Reference Terminal section, expand thePin Groups option andselectU41_GND_Group.

6. In theCircuit Element Type section, selectVoltage Source.7. Press theCreate button.

TheSet Voltage Source Propertieswindow appears.


PSI AC Current Analysis 6-1




8. Shorten the name toU41_VCC_VSRC.9. Ensure that Frequency Independent is selected.10. Ensure theMagnitude is set to 1 Volt, theParasitic Resistance is set to 1E-06 Ohms, and

the Phase is set to 0 Degrees.11. ClickOK to accept the voltage source definition.12. ClickOK to exit theCircuit Element Generationwindow.

Generate AC CurrentsAC current calculates the surface current flowing on the VCC andGND planes. This can revealregions of high impedance that may occur due to antipads, cutouts, or discontinuities in groundplanes.

1. ClickSimulation. In thePSI section, clickCompute AC Currents.TheCompute AC currents using PSIwindow appears.





2. In theExcitations area, ensure thatUse sources defined in project is selected.3. Set theStart Freq to 500 MHz.4. Set theStop Freq to 1 GHz.5. Set theNum. Points/Step Size to 50. Please note that for each frequency point, a number of

data files are written to the disk. The available disk spacemust be considered before specifyingtoomany frequency points for simulation.

6. Set theDistribution to Linear.





7. Click the Launch button to launch the PSI AC current analysis.

The progress bar indicates that the analysis is running.When it has completed, you can viewAC currents as 2D plots.

View AC Currents as 2D PlotsClick theResults tab. In thePSI section, clickAC Currents > PSI AC Sweep > Plot Currents.

ThePSI AC Current Simulation Results (PSI AC Sweep)window also appears. Clear thebutton for each layer. Click the check box next to L2 to view the AC currents on this layer. Clickeach row of the Frequency list to view the AC currents at that frequency. You can see that thecurrent magnitude is lower at 800MHz, where there is a peak in the impedance, compared to 900MHz, where there is aminimum.





Export Total Radiated PowerAfter running the AC current analysis, the total power radiated from the PCB can be exported to aCSV (comma separated value) file.

1. Click theResults tab. In thePSI section, clickAC Currents > PSI AC Sweep > Exporttotal radiated power.

2. Name and save the .csv file to any location.





3. View the saved file in any text editor.

4. ClickFile > Save to save the project with the AC Current analysis result.




7 - Frequency Sweep of VoltagesIn this chapter, you will complete the following tasks:

l Create a current source on a componentl Place a voltage probe in a region of interestl Calculate a frequency sweep of voltages on the PCBl Compare the results of the frequency sweep with the resonant mode and s-parameterscalculations

Disable Voltage SourcesThe voltage source used in the AC Current analysis should be disabled, so that it does not interferewith the voltage frequency sweep.

1. In theComponentsworkspace, ensure that Voltage Sources is selected.2. Right-click onVoltage Sources and selectSet All Voltage Sources Not Active.

Create Current SourceThe frequency sweep analysis requires one or more sources as excitations. To define a CurrentSource:

1. ClickTools > Generate Circuit Element on Components.TheCircuit Element Generationwindow appears.

2. In the Positive Terminal Component section, use thePart Name drop-downmenu toselectMACH230_SMSOCKETAMD and theRef Des drop-downmenu to selectU41.

3. In the Reference Terminal Component section, select the same.4. In theCircuit Element Positive Terminal section, expandPin Groups and selectU41_

VCC_Group.5. In theCircuit Element Reference Terminal section, expandPin Groups and selectU41_

GND_Group.6. For theCircuit Element Type, selectCurrent Source.7. Click theCreate button.

TheSet Current Source Propertieswindow appears.8. Shorten the name toU41_VCC_ISRC.9. Set the Frequency Independent Magnitude to 1e-5 Amps.10. Ensure that the Parasitic Resistance is set to 5E+07Ohms and thePhase is set to 0Degrees.11. ClickOK to accept the current source definition.12. ClickOK to close theCircuit Element Generationwindow.


Frequency Sweep of Voltages 7-1




Next, we'll create a voltage probe.

Create a Voltage ProbeThe problem of induced ripple voltage in the power distribution network (PDN) can be investigatedbymeasuring the voltage between the VCC andGND nets, using a voltage probe placed at alocation of interest on the PCB.

Wewill place a probe at the lower-right corner of the PCB, where U41 is located. The X- and Y-coordinates for the probe are X=8500mil, Y=0mil.

1. Make sure the Units field in themenu bar is set to mils.2. ClickView. Use the Zoom In icon (or your mouse wheel) to enlarge the lower-right corner of

the PCB.

3. ClickHome. In theCircuit Elementsmenu, select theAdd Voltage Probe icon. The cursorchanges to a small bullseye.

4. Use the location indicators at the bottom-right of the screen to position your cursor at x: 8500mils, y: 0 mils.

5. Click the left mouse button twice, slowly each time. The first click locates the positive terminal,the second click is for the reference terminal. The terminals are located in the same positionsince these probesmeasure the voltage between two planes.

TheSelect layers for voltage probe terminalswindow appears.





6. For thePositive Terminal Resides on Layer, select L7 (VCC).7. For theNegative Terminal Resides on Layer, select L2 (GND).8. ClickOK to close the Select layers for voltage probe terminalswindow.

TheEdit Probe Namewindow appears.

9. Enter VPROBE1, and clickOK.The voltage probe (yellow in the following figure) appears.





Next, we will run a frequency sweep.

Run SIwave Frequency SweepFrequency sweep calculates the voltages across the VCC andGND planes at the locations of theprobe. The SIwave frequency sweep shows how the current drawn by a device can lead to voltageripple in the power distribution system.

Run the frequency sweep analysis

1. ClickSimulation > Compute Frequency Sweeps...2. For excitations, selectUse sources defined in project.3. Set theStart Freq/Hz to 5E8 (or 500MHz).4. Set theStop Freq/Hz to 1e9 (or 1GHz).5. Set theNum. Points to 200.6. Set theDistribution to Linear.7. Set theVoltage Surface Plot Options to plot voltage difference between layersL2 and

L7.8. ClickLaunch to launch the simulation.

The processmonitor shows the progress of the simulation. Next, we'll plot the probe voltages.





Plot Probe VoltageTo plot the voltages at the probe locations:

1. ClickResults > Frequency Sweep. Then clickFrequency Sweep 1 Results > Plot ProbeVoltages.

2. Make sureVPROBE1 is selected.3. ClickCreate Plot.

TheReporter window openswith the plot of the voltage versus frequency.

The peaks in the voltage correspond to resonant mode 4, mode 8, andmode 10.

ConclusionCongratulations! You have successfully completedGetting Started with SIwave: A PCBModel.Youmay save the project and exit the software.




PDF layout 7-6





Index

A

analyses

SYZ-parameter extraction 4-4

auto-identify power and groundnets 2-2

C

create voltage probe 7-2

G

ground nets 2-5

L

layer stack 2-5

layers workspace 2-5

N

nets 2-5

power and ground 2-7

O

open SIwave 2-1

P

PCBmodel 1-1

plot probe voltage 7-5

power nets 2-2

probe voltage, plotting 7-5

probe, voltage 7-2

project

import 2-1

save 2-1

R

results

SYZ impedance response 4-6

S

save a project 2-1

set visibility 2-2

SIwave

open 2-1

SYZ-parameters, generate 4-4

SYZ impedance response 4-6

V

validation check 2-7

visibility, set 2-2

voltage probe, create 7-2

Index-1



Getting Started with SIwave: A PCB Model · 2020. 6. 15. · GettingStartedwithSIwave:APCBModel...

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Transcript of Getting Started with SIwave: A PCB Model · 2020. 6. 15. · GettingStartedwithSIwave:APCBModel...