Reflectarray antennas have attracted extensive attention due to their low loss, high gain, compact volume, and their
excellent abilities to control the radiated beam. The use of dielectric resonators as the reflectarray elements minimises the
ohmic loss and the coupling between elements. This study uses fused deposition modelling (FDM) three-dimensional (3D)
printing rapidly prototyping a low cost and light-weight dielectric resonator reflectarray. The demonstrated reflectarray is composed of 625 3D printed dielectric resonator elements to control the reflected phase over the reflector surface. The total size is 12 × 12 cm2 and the mass is 67 g. Measurements show that this reflectarray provides 28 dBi gain at 30 GHz when offset fed by a Ka-band horn antenna. This work demonstrates the potential of FDM for millimetre wave (mm-wave) applications. The new 3D printing approach can be deployed for high-gain mm-wave antenna fabrication with significantly reduced labour time and
This is an Open Access Article. It is published by the IET under the Creative Commons Attribution 3.0 Unported License (CC BY 3.0). Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/
The author's work was supported by EPSRC Doctoral Prize Research Fellowship.