Fully 3D-Printed Wideband Metasurface Folded Reflectarray Antenna
Evangelos Vassos, Thomas Whittaker, Abdul Jabbar, Aakash Bansal, and Will Whittow

TL;DR
This paper introduces a fully 3D-printed wideband metasurface foldable reflectarray antenna operating in millimeter-wave frequencies, demonstrating high gain, wide bandwidth, and low-cost rapid prototyping for advanced wireless applications.
Contribution
It presents a novel 3D-printed metasurface design with volumetric dielectric control, enabling wideband performance and robust phase compensation, unlike traditional planar PCB-based reflectarrays.
Findings
Achieved 20.7% impedance bandwidth (26-32 GHz)
Realized peak gain of 31.1 dBi at 28.2 GHz
Maintained stable pencil beams with 3.7° HPBW
Abstract
This article presents a fully 3D-printed wideband metasurface folded reflectarray antenna (MFRA) operating in the millimeter-wave n257 band. The proposed MFRA integrates a novel polarization-rotating reflective metasurface (RMS), a compact embedded horn feed, and a polarization-selective metasurface polarization grid (MPG), all fabricated using a low-cost in-house 3D-printed method. Unlike conventional PCB-based FRAs constrained to planar unit-cell geometries, the proposed anisotropic meta-element design exploits full three-dimensional dielectric control by tailoring varying unit-cell heights. This volumetric tuning, combined with the spatial distribution of the meta-elements, enables phase compensation exceeding across the aperture, supporting robust wideband performance. An MFRA prototype is in-house fabricated and experimentally validated. Measured results agree well…
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Taxonomy
TopicsAdvanced Antenna and Metasurface Technologies · Antenna Design and Analysis · Metamaterials and Metasurfaces Applications
