Arbitrary aperture synthesis with nonlocal leaky-wave metasurface antennas

Gengyu Xu, Adam Overvig, Yoshiaki Kasahara, Enrica Martini, Stefano Maci and Andrea Alù ()
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Gengyu Xu: City University of New York
Adam Overvig: City University of New York
Yoshiaki Kasahara: City University of New York
Enrica Martini: University of Siena
Stefano Maci: University of Siena
Andrea Alù: City University of New York

Nature Communications, 2023, vol. 14, issue 1, 1-11

Abstract: Abstract The emergence of new technological needs in 5 G/6 G networking and broadband satellite internet access amplifies the demand for innovative wireless communication hardware, including high-performance low-profile transceivers. In this context, antennas based on metasurfaces – artificial surfaces engineered to manipulate electromagnetic waves at will – represent highly promising solutions. In this article, we introduce leaky-wave metasurface antennas operating at micro/millimeter-wave frequencies that are designed using the principles of quasi-bound states in the continuum, exploiting judiciously tailored spatial symmetries that enable fully customized radiation. Specifically, we unveil additional degrees of control over leaky-wave radiation by demonstrating pointwise control of the amplitude, phase and polarization state of the metasurface aperture fields by carefully breaking relevant symmetries with tailored perturbations. We design and experimentally demonstrate metasurface antenna prototypes showcasing a variety of functionalities advancing capabilities in wireless communications, including single-input multi-output and multi-input multi-output near-field focusing, as well as far-field beam shaping.

Date: 2023
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DOI: 10.1038/s41467-023-39818-2

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