Overview:
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:
Ports:
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
Meshing
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.