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).