Sub-THz Fully-Metallic Geodesic Luneburg Lens Antenna

CASTILLO-TAPIA, P.; YANG, S.; PALOMARES-CABALLERO, Á.; GUILLET, Jean Paul; FONSECA, N. J. G.; QUEVEDO-TERUEL, O.

doi:10.1109/tthz.2025.3548452

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IEEE Transactions on Terahertz Science and Technology. 2025-03-05p. 1-5

Resumen en inglés

We propose and validate experimentally a fully metallic geodesic Luneburg lens antenna operating in the sub-THz band. The antenna produces three beams pointing at 0, 40 and -40 degrees. To facilitate the integration, the geodesic lens is folded to reduce its height to approximately 38.7% of the original Rinehart-Luneburg lens. To reduce potential leakage resulting from manufacturing and assembly tolerances at sub-THz frequencies, the waveguide feeding structure has a deliberate small air gap alongside electromagnetic bandgap structures. This enhancement aims to bolster the robustness of the antenna, ensuring stable performance even in the presence of misalignments. The results demonstrate the robustness of geodesic lenses in the sub-THz regime; showing their suitability for applications that require multi-beam antennas at these high frequencies. The successful performance of geodesic lenses in the sub-THz regime confirms its potential for operation at higher frequencies above 300 GHz.< Leer menos

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https://oskar-bordeaux.fr/handle/20.500.12278/205480

DOI

http://dx.doi.org/10.1109/tthz.2025.3548452

Centros de investigación

IMS : Laboratoire de l'Intégration du Matériau au Système - UMR 5218

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