Examples of Lumped Port
Lumped ports can be used in a variety of ways as shown below.
They vary as follows:
- For 1: The 2D port rectangle touches the signal trace with one edge while the opposite edge touches the ground plane.
- For 2: The 2D port rectangle touches the signal trace with one edge while the opposite edge touches the PEC objects (drawn in grey).
- For 3: the port is an annular ring around the BGA ball where the resulting field patterns closely resemble those for a coaxial TEM mode.
Note:
Use lumped ports only for those surfaces that are internal to the model and wave ports to model exterior surfaces through which a signal enters or exits the geometry.