Download user's guide – High Frequency Structure Simulator

Analysis Setup
2
Adding a Solution Setup (Continued)
Ports Tab
Port Adapt Options
Port Field Accuracy - Usually, the default Port Field Accuracy value
is adequate. You may want improved port accuracy under the
following conditions:
You are interested primarily in the port impedances. Port
impedances are computed as part of the port solution.
You need to lower the noise floor to catch S-parameters that
are expected to be in the -70 dB range.
Refining the mesh at the ports causes HFSS to refine the mesh for
the entire structure as well. This occurs because it uses the port field
solutions as boundary conditions when computing the full 3D
solution. Therefore, specifying too small a port field accuracy can
result in an unnecessarily complex finite element mesh
Ansoft High Frequency Structure Simulator v 9.0 User’s Guide
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