NI AWR Software Training: EM Solvers - Under the Hood of Ports, Boundaries, and Meshing

Nov 13, 2018
Event location: 
Richardson, TX

This one-day class examines some of the underlying issues in proper implementation of ports, boundaries, and meshing for the AXIEM planar and Analyst™ 3D finite element method (FEM) EM simulators within the NI AWR Design Environment platform. There are important assumptions, based on physical and mathematical concepts, that the designer needs to understand to achieve the best possible answer. The concepts in both AXIEM and Analyst simulators will be discussed.  Anyone using an EM simulator of any kind should benefit by learning the concepts discussed in this class.

Topics covered include:


  • How to find the ground of a port and why it matters
  • Calibration and de-embedding, and how they can become inaccurate
  • AXIEM simulator: the tradeoffs between implicit and ground strap ports
  • AXIEM simulator: the most common mistakes when setting ports
  • Analyst simulator: how wave ports and lumped ports work, and common problems
  • Differential ports in AXIEM and Analyst simulators—behind the scenes
  • What port to use for surface mounted parts

Boundary Conditions

  • What is an impedance boundary condition
  • AXIEM simulator: assumptions of modeling conductor loss
  • Analyst simulator: most common mistakes when setting boundary conditions


  • Matrices and condition numbers
  • AXIEM simulator: what makes a good mesh and how to set the mesh.
  • Analyst software: meshing options—frequency settings and convergence

Determining If an Answer Is Correct

  • Passivity and energy conservation tests
  • Common mistakes to avoid when simulating

​Course Equipment/Hardware:

  • Bringing your own laptop is preferred. If necessary, a laptop can be provided.
  • Special note: 64-bit PCs are required to run the software.
  • Software, licenses, and required training materials will be provided.


9:00 a.m. Ports: De-embedding, calibration, and ground
9:15 a.m. AXIEM simulator: implicit and explicit ground port issues and common mistakes
10:30 a.m. Break
10:45 a.m. Analyst simulator: wave and lumped ports and common issues
12:00 p.m. Lunch
12:30 p.m. AXIEM simulator: meshing issues
1:30 p.m. Analyst simulator: meshing issues
2:30 p.m. Break
2::45 p.m. AXIEM simulator: impedance boundary conditions and conductor loss
3:15 p.m. Analyst simulator: boundary condition issues
3:45 p.m. Determining if an answer is correct: passivity and energy conservation
4:30 p.m. Conclusion