Parametric Study of a Fully 3D-Printed Dielectric Resonator Antenna Loaded With a Metallic Cap

Abstract

This article presents a parametric study of a fully 3D-printed hemispherical dielectric resonator antenna (DRA) using low loss dielectric filament and high-conductive filaments jointly with a low-cost customized dual-extruding 3D printer. The parametric study consisted in the design and evaluation of five different hemispherical DRA topologies with different internal shapes and the same overall size, in which the printing infill percentage of the DRA was reduced. A 3D-printed metallic cap was included in the antenna to compensate for the resonant frequency shift in order to maintain its original dimensions. Measurement results show that all evaluated antennas kept the same resonant frequencies and similar radiation patterns while reducing the overall weight of the topology in 22% of the nominal weight.INDEX TERMS 3D-printing, conductive filaments, dielectric resonator antennas, dielectric filaments.

Cost-effective wideband dielectric planar lens antenna for millimeter wave applications

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“…Changing the 3D-printed infill fraction was also used to create a DRA with two effective dielectric regions. It was found that by increasing the air volume fraction in certain locations and including a metal cap to compensate for the frequency shift, the weight of the DRA could be reduced by 22% [57].…”

Surrogate‐assisted optimization of 3D printed ceramic nonuniform nonplanar microstrip filter

“…3D printer are a cost-efficient solution for manufacturing of complex microwave designs such as in Garcia-Martinez and colleagues. [27][28][29][30][31][32][33][34][35][36] Here to have a design with a shorter length, the substrates is modeled as nonplanar substrate. This feature can be obtained easily by using the unique feature of 3D printing technology.…”

“…With recent development in 3D printing technology the fields that utilize this method for low‐cost manufacturing is also increased. 3D printer are a cost‐efficient solution for manufacturing of complex microwave designs such as in Garcia‐Martinez and colleagues 27–36 . Here to have a design with a shorter length, the substrates is modeled as nonplanar substrate.…”