Use a Far-Field Calculation to select all boundaries between, on one side, the Infinite void, and on the other side, different material domains, voids, or boundaries that scatter or radiate. By default, all boundaries within the simulation domain are selected, while those interior to a material domain are disregarded, marked as not applicable.

Enter a Far-field variable name. The default is Efar.

To display this section, click the Show More Options button () and select Advanced Physics Options in the Show More Options dialog.

For a discussion about the settings in this section, see Advanced Settings in the documentation for The Electromagnetic Waves, Frequency Domain Interface.