Study of the Frequency Dispersion of 3D-Printed Dielectric Crystals for Dielectric Resonator Antenna Applications

In this paper, the study of simple cubic (SC) and face-centered cubic (FCC) crystals, in addition to the use of the plane wave expansion method allows us to understand the dispersive behavior of electrically-large unit cells. From numerical analyzes, we demonstrate that we can take this dispersive behavior into account for the design of a dielectric resonator antenna (DRA) made up of electrically-large 3D-printed SC unit cells.