All-Metallic-Metasurface-Based Wideband Dual Fabry-Perot Resonance Antenna Array with High Directivity and Polarization Purity
Journal article, 2025

In recent years, the integration of metasurface concepts into antenna design has sparked a revolutionary break-through, yielding unprecedented advancements in directivity, bandwidth, radiation pattern, polarization, and beam shaping capabilities once thought unachievable. However, further enhancements are still necessary, particularly in terms of integrability and loss reduction, while simultaneously broadening the operational bandwidth and enhancing gain and directivity. In this work, we demonstrate that incorporating the gap-waveguide (GW) technology into the radiator section can be leveraged to improve bandwidth and directivity of antenna arrays, mimicking a dual perfect electric conductor-perfect magnetic conductor Fabry-Perot resonant cavity. Importantly, our concept comprises an entirely metallic 4×4 metasurface-based antenna array, diverging from prior research that employed dielectric components in metasurface design. As a result, the measured bandwidth was around 21% (12 GHz-14.8 GHz) with a measured gain of up to 22.9 dBi. Furthermore, we implement GW technology in the feeding layer, directly coupling it to the radiating layer through slots, thereby optimizing the footprint.

Antenna Array

All-metal

Metasurface

Gap Waveguide

Metantennas

Author

Bruno Ferreira Gomes

Instituto Nacional de Telecomunicações

Ashraf Uz Zaman

Chalmers, Electrical Engineering, Communication, Antennas and Optical Networks

J. R. Mejia-Salazar

Instituto Nacional de Telecomunicações

IEEE Transactions on Antennas and Propagation

0018926x (ISSN) 15582221 (eISSN)

Vol. In Press

Subject Categories (SSIF 2025)

Other Electrical Engineering, Electronic Engineering, Information Engineering

Communication Systems

DOI

10.1109/TAP.2025.3537688

More information

Latest update

2/21/2025