Dielectric Resonator Antenna on Finite Ground

Calculate the input impedance and radiation pattern of a dielectric resonator antenna (DRA) with a coaxial pin feed on a finite ground.

Model the dielectric layers using the following configurations:

1. Feed with a FEM modal source and solved using the hybrid finite element (FEM) and MoM solution.
2. Feed with a waveguide source and solved using the method of moments (MoM) solution with the surface equivalence principle (SEP).
3. Conduct characteristic mode analysis on the structure (lossless and lossy) and observe the consequent degradation of the modal significance in the lossy case.

Figure 1. 3D view of the dielectric resonator antenna on a finite ground plane.