Different Ways to Feed a Horn Antenna

Calculate the far field pattern of a pyramidal horn antenna at 1.645 GHz.

Figure 1. A 3D view of the pyramidal horn antenna with far field pattern cuts..

The far field results are compared for the following configurations:

1. Physical feed pin with voltage source.
2. Waveguide port with waveguide source.
3. FEM modal port with modal source using the finite element method (FEM).