Examinando por Autor "Martinez-de-Rioja del Nido, Daniel"

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A Multi-faceted Reflectarray onboard Aerospace Vehicle with Enhanced Bandwidth
(Comité Organizador y Científico XXXIX Simposio Nacional de la Unión Científica Internacional de Radio, URSI 2024. Escuela Politécnica de Cuenca. Universidad de Castilla-La Mancha, 2024-09-04) Imaz Lueje, Borja; Martinez-de-Rioja del Nido, Daniel; Rodríguez Pino, Marcos; Arrebola Baena, Manuel
This paper presents an electrically large multi-faceted aperture that can be folded and deployed onboard an aerospace vehicle. Following a single-offset configuration, the aperture comprises five low-profile panels assembled edge-to-edge, arranged following a parabolic curvature. The entire antenna structure is designed to generate a directive beam in Ka-band, working in dual-linear polarization. An electromagnetic characterization of this topology has been carried out, compared the results to the performance of an equivalent single facet reflector and a multi-faceted reflectarray composed of nine panels. The five panel multi-faceted structure features a directive pattern stable in-band, and a 1dB-gain bandwidth of 10%, significantly higher than in an equivalent single facet aperture. Compared with the nine-panel structure, it exhibits lower gain bandwidth but higher peak gain, similar beamwidth in-band and easier integrability with the vehicle platform.