Tips for Using PO or LE-PO
Several tips are presented to reduce runtime and memory consumption when using hybrid methods involving the physical optics (PO) and large element physical optics (LE-PO).
-
- Decouple the MoM and PO parts if the coupling is negligible
- If the interaction (coupling) between the MoM and PO parts are small, then the MoM and PO parts can be decoupled saving
computational resources.Note: It is recommended to always test this assumption by setting up a smaller model, for example, using a coarse mesh, specifying a single frequency and using a single source.
-
- Use special ray tracing options
-
For applicable models, set always illuminated or only illuminated from front to reduce the ray tracing time (for example, a reflector antenna).
-
- Minimize the number of MoM elements
- If the coupling between the MoM and PO regions cannot be disabled, then reduce the computational resources by minimising the number of MoM elements (triangles/segments). Where possible use an equivalent source for the MoM part.
-
- Use LE-PO
- The LE-PO can be used in areas where the geometry is smoothly varying and several wavelengths away from the source. The LE-PO surfaces can be meshed using a mesh size of up to .