Examinando por Autor "Arrebola Baena, Manuel"

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  • Miniatura
    Ítem
    A High-Throughput Deployable Antenna based on Not-Aligned Reflectarray Panels
    (2024 IEEE International Symposium on Antennas and Propagation and ITNC-USNC-URSI Radio Science Metting, 2024-07-19) Imaz Lueje, Borja; Martinez-de-Rioja, Daniel; Rodríguez Pino, Marcos; Arrebola Baena, Manuel
    This contribution describes a deployable large multi-faceted reflectarray to be embarked in different aerospace vehicles. The structure comprises several low-profile panels that are assembled to follow an equivalent parabolic reflector. An example of this antenna concept is designed to operate in Ka-band and dual-linear polarization. It provides high-gain, low-losses, and a bandwidth significantly higher than the one achieved with a conventional deployable reflectarray. Therefore, the proposed antenna exhibits high-throughput performance with integrability with the vehicle platform. Such features are of particular interest for space missions and some terrestrial communications.
  • Miniatura
    Ítem
    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.