Videos > Crash course: EMI radiation emission using SIwave.
Oct 20, 2023

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Crash Course: EMI Radiation Emission Using SIwave

Introduction

This guide covers the process of performing AMI and AMC verifications using ANSYS tools. We will use SI Wave to import files and conduct a series of analyses and simulations.

Steps for Verification

  1. Import Your File:
    • Go to SI Wave and import your file using any supported format.
  2. Perform PI Analysis:
    • Specify which nets you want to have ports on.
    • Example: Place a port here and a second port there.
    • Select traces, such as PCI_PE, and specify ports accordingly.
  3. Configure Simulation:
    • Validate and simulate the configuration.
    • Specify the frequency band. Note that the maximum frequency affects the minimum or shortest rising time in your circuit.
  4. Launch Electronic Desktop:
    • Add the circuit and request an SI Wave link under symbols.
    • This is the model and the name of the solution is Sweep1.
    • Add the source and termination, then solve.
  5. Push Excitation:
    • Return to SI Wave and launch the near field solver.
    • Match the frequency by cloning and eliminate the Coordinator.
  6. Set Parameters:
    • Disable the tilting feature and set control-based parameters.
    • Display actual values by selecting Z and adjusting the terminal parameter.
    • Set up the net value for each one.
  7. Insert HFSS Design Project:
    • Go to excitation and select linked field, then choose near field.
    • Create a design from external data and open it.
    • The near field should be within a 3mm boundary around the PCB.
  8. Create a Cage:
    • Create a cage using an air region and move it in the Z direction.
    • Ensure the near field is completely inside the box and set boundaries.
    • Optionally, add a 3D shape to open holes in any desired location or shape.
  9. Run the Solver:
    • After adding all desired elements around the near field box, start solving.
  10. View Results:
    • Create an emission test report with a rectangular plot.
    • Select to see the far field at 1 meter, 30 meters, or 3 meters.
    • Generate a new report to view the worst possible value at each frequency.

Conclusion

By following these steps, you can effectively perform EMI radiation emission analysis using SI Wave and ANSYS tools. Ensure all configurations are correctly set to obtain accurate results.

[This was auto-generated. There may be mispellings.]

Crash Course: EMI Radiation Emission Using SIwave Performing AMI and AMC verifications using ANSYS tools. Go to SI Wave and import your file using any of these formats. Once you have the model, proceed immediately to PI analysis. Specify which nets you want to have ports on them.

For example, place a port here and a second port here. You can also select traces, such as PCI\_PE, for instance. We specify two ports here, one port here, and one port here. Configure simulation, validate, simulate, and specify the band.

This number, which is the maximum frequency, will affect the value of the minimum or the shortest rising time you can have in your circuit. Launch. Open the electronic desktop. Add the circuit. Under symbols, search for an SI Wave link. This is the model. And this is the name of the solution.

Sweep one. Add the source and add the termination. Solve. Once the solution is done, perform push excitation. Going back to SI Wave. Launch the near field solver. And it probably works at all frequencies. So it can match the frequency by cloning.

Press this button to eliminate the Coordinator and calculate a control-based parameter in . Press "Chinese" on the link here, to disable the tilting feature.

This disables any intercom which is three visualact corresponding to your driver ke ventilator, and also the antique, like this one here, which depends on setting values and coolorts. To display the actual value of that value, select "Z".

This indicates 0.85π and the terminal crystal parameter, the variable value G plane, if you just turn the value shaft in return. And when you do so, set up the net value for each one. Next, when you select the model, go back to the electronic desktop.

And this time, we will insert an HFSS design project. And we go here and we go to excitation and select linked field, then select near field. Now we are looking for that field from an external data design. Create design. It is this one. Open. Open.

And this is our near field with three millimeters in all directions around the PCB. Now, whatever you want to do, it has to be outside this box. So what I'm going to do is create some sort of a cage using an air region. Move in the Z direction. Now the near field is completely inside the box.

And I set boundaries. E. So now we have a cage that's only open from one side. Some people may choose to add a 3D shape so they can open holes in any place in any shape. Or what you need to do is to start solving. After adding everything you wanted to add around that box. Near field box.

Now that the solver has finished, we can look at the results. So we go to create emission test report rectangular plot. And you can select to see the far field at one meter, 30 meters. So let's see at three meters. And we say new report. This will give you the worst possible value at each frequency.

So we can see the value of the output. And we can see the value of the output. And we can see the value of the output. And we can see the value of the output. And we can see the value of the output frequency.

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