Excitation by an Incident Field

To choose an incident plane wave as excitation of the structure, go to the Setup tab > Excitation panel > and select the Incident Field option, Fig. 1. When this option is selected, if there are discrete sources on the structure, none will be considered in the simulation.

Note

When an incident plane wave is used as the excitation, the calculated far-field and near-field results represent the scattered fields. The resulting radiation pattern is the scattered field pattern, observed in the far-field region where the scattered field amplitude decays with the inverse of the distance (1/r), and the scattered power density decays with the inverse square of the distance (1/r²) from the structure.