Overview: Analysis Parameters in Q3D Extractor

During adaptive analysis the system iteratively refines the starting mesh in order to reduce the size of individual elements in areas of high error. This improves accuracy.

When an adaptive analysis is performed:

• Q3D Extractor generates a field solution using the specified mesh.
• Q3D Extractor computes the desired parameters and the change in the matrix from the previous pass (the matrix delta). It then compares the delta with the Percent error. When the matrix delta is less than the specified Percent error value, the field solution process stops.
• Q3D Extractor performs an error analysis in each triangle (capacitance and AC analysis) or tetrahedron (DC analysis) in the mesh. Elements with the highest energy error are then refined (broken down into smaller elements), producing a more accurate solution in these areas.
• Another solution is generated using the refined mesh, and Q3D Extractor repeats this process until the stopping criteria are satisfied.