The dipole was modeled using Elmergrid. The dimensions of the dipole are similar to the case in the below forum post, except the free air is a bit smaller. The dipole antenna is 0.1 meters long and is inside of a cylinder of air that has 0.05 meter radius and 0.2 meter height.
Comments are welcome,elmergrid 1 2 dipole
Edit: changed the attached archive, now the elmergrid model is in meters. Also added an animation from Paraview.