Artículo
Geodesic Half-Maxwell Fish-Eye-Lens Antenna
Autor/es | Yang, Shiyi
Chen, Qiao Mesa Ledesma, Francisco Luis Fonseca, Nelson J. G. Quevedo-Teruel, Óscar |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2023-03 |
Fecha de depósito | 2024-06-24 |
Resumen | We propose and implement a geodesic half-Maxwell fish-eye (MFE)-lens antenna. The lens was optimized using an in-house physical optics (PO) code adapted for generalized geodesic lenses. The final antenna design was validated ... We propose and implement a geodesic half-Maxwell fish-eye (MFE)-lens antenna. The lens was optimized using an in-house physical optics (PO) code adapted for generalized geodesic lenses. The final antenna design was validated with commercial electromagnetic simulation software. The antenna combines a modulated geodesic half-MFE lens and a transition to a linear flare, which is needed to preserve the linear polarization in the aperture. The antenna prototype, designed to operate in the Ka -band, was manufactured with computer numerical control (CNC) milling and measured in an anechoic chamber. The design provides continuous beam scanning because of a mechanically actuated feed. Promising beam scanning properties are demonstrated in an angular range of ±45° with a scan loss below 3 dB, as well as good frequency stability from 26 to 32 GHz. Since the antenna is fully metallic, its radiation efficiency is high (approximately 90%). |
Ficheros | Tamaño | Formato | Ver | Descripción |
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Ie3_mesa-ledesma_2023_geodesic.pdf | 38.10Mb | [PDF] | Ver/ | |