Crash Course: FarField Analysis using SIwave and AEDT Circuit

Step-by-Step Guide

1. Upload Your PCB:

   Start by uploading your PCB. Click on the relevant icon to view all the five types that SIwave can support, especially IPC 2581 and ODB++.

2. Access SIwave Wizard:

   Click on the SIwave wizard icon and navigate to the DCIR Drop Analysis.

3. Select Power Plane or RF Line:

   Choose the power plane or RF line you want to analyze. You can select more than one.

4. Add Voltage and Current Sources:
   • Add a voltage source at the VRM.
   • Add a current source at the CPU.
   • You can change the values as needed. These values will be used for all frequencies.
5. Configuration and Validation:

   Configure and validate the setup. Once everything is okay, close the dialog box.

6. Activate Power Plane:

   Activate your power plane and highlight the 1.2V line.

7. Simulation Setup:
   • Go to simulation and select the Far Field.
   • Select your frequency band and the resolution of your far field.
   • Launch the far field calculations.
8. Plot Results:

   Once you have a solution, plot the results:

   • Plot the far field.
   • Select maximum, RE total.
   • This is the curve used for EMI analysis.
   • You can also plot RE total in a 3D plot using the electronic desktop.

Conclusion

This concludes the crash course on FarField analysis using SIwave and AEDT Circuit. For further information, please refer to the documentation provided by Ozen Engineering, Inc..