Use Radiation Boundary on Ports

If the design includes wave ports, the Use Radiation Boundary on Ports option is enabled under the Advanced options tab of the Solution Setup dialog box.

• If you select this setting, edges that touch a port and are assigned to an ABC have a radiation boundary condition applied during the port solution.
• If you do not select this setting, a perfect conducting boundary condition is used during the port calculations.

In most cases this setting has a limited effect on the overall fields or post processed quantities.