ViaExpert – Via Modeling and Simulation

Overview

Via discontinuities in signal paths have significant impact on signal integrity for high speed designs. A quick way to build via models and then simulate them is essential for SI engineers. ViaExpert is made specially for this purpose. To quickly build via models, it provides multiple ways including built-in templates, direct layout file import, and a combined flow which takes advantage of both the layout trace breakout and built-in templates. To quickly simulate models, it deploys two solver technologies, one is a Finite Element Method (FEM) solver, and the other is a hybrid solver with an order of magnitude speedup compared to the FEM solver. Both adopt distributed processing and multi-core parallelization, which adds another level of acceleration. Auto port generation simplifies EM analysis setup. Parametric sweep and optimization help to achieve design convergence. It provides export to HFSS for quick benchmarking purpose.

HighLights
  1. Via discontinuities in signal paths have significant impact on signal integrity for high speed designs. A quick way to build via models and then simulate them is essential for SI engineers. ViaExpert is made specially for this purpose.
  2. To quickly build via models, ViaExpert provides multiple ways including built-in templates, direct layout file import, and a combined flow which takes advantage of both the layout trace breakout and built-in templates.
  3. To quickly simulate models, ViaExpert deploys two solver technologies, one is a Finite Element Method (FEM) solver, and the other is a hybrid one. Both adopt distributed processing and multi-core parallelization, which adds another level of acceleration.
  4. Auto port generation simplifies EM analysis setup.
  5. Parametric sweep and optimization help to achieve design convergence.
  6. ViaExpert provides export to HFSS for quick benchmarking purpose.
Main Features

Modeling from Templates

  • Constructing via related CAD models is hard and time-consuming. ViaExpert’s built-in templates come to the rescue.

Modeling from Layout

  • Board or package layout import is made easy. Modifications, tuning, and optimization? Available too!

Modeling from Library

  • Want to combine footprint & routing from a board with custom design? No problem!

3D Model, Flexible Mesh, and Powerful Solvers

  • 3D CAD model from templates or PCB layout or combined flow
  • Automatic 3D tetrahedral mesh
  • Fast 3D FEM solver and hybrid one for even faster simulation

Via and Trace Edit in Model

  • Create/edit/delete differential traces easily
  • Via parameters such as anti-pad shape and size can be easily edited
  • Auto ports on traces or pins
  • Built-in backdrill or non-functional pad removal option

Benchmark (DC-50GHz)

  • ViaExpert can cut PCB directly and create 3D model in seconds.
  • ViaExpert’s result agrees well with 3rd party tool.

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