Programa del congreso
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Resumen de las sesiones |
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Pr-4: S.E. Baja observabilidad - Premio Indra (II)
Tribunal: Ana Álvarez (INDRA), Carlos Zarzuelo (INDRA), Mikel Laso (URSI), Juan José de Dios (UCLM) y Ramón Villarino (URV)
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13:00 - 13:15
Novel multi-layered systems with improved radar absorption 1Departament de Física de la Matèria Condensada, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain; 2Institut de Nanociència i Nanotecnologia (IN2UB), Universitat de Barcelona, 08028 Barcelona, Spain The present work reports our recent advances on the development of new type of complex materials for improved broadband microwave absorption. Composite systems, containing powder functional magnetic components, have been build-up and optimized for stealth applications. Specific far field measuring systems have been designed, as well, to have a clear picture about the real performance of our materials. Experimental data and theoretical models are compared and discussed to have a full understanding of the absorption process. The results obtained so far show promising opportunities to enhance broadband radar absorption by means of multi-layered functional systems.
13:15 - 13:30
Frequency Selective Surfaces using Sinuous elements 3D-printed Universidad Politecnica de Madrid, España A flat periodic FSS (frequency –selective surface) is presented fully manufactured with a standard 3D printer and commercial dielectric and conductive PLA filament. The absorber is comprised of graphite filled polylactic acid (PLA) two-dimensional array of sinuous elements, backed by a PLA substrate and graphite filled PLA ground plane. The absorber was optimized for 8 to 12 GHz and offers a 10 dB reflection reduction bandwidth BW of 52.38% (7.44-12.72 GHz) for both polarizations. The thickness of the proposed absorber is less than 0.125 λ_L (wavelength at the lowest cutoff frequency f_L). The results provided shown the possibilities of this printing technology,
13:30 - 13:45
Reduction of the RCS on a Gap-Waveguide Transverse Slot-Fed Patch Antenna Array Operating at 28 GHz Universidad Carlos III de Madrid, España This communication presents preliminary results on the design of a patch antenna array fed by transverse slots in the broad wall of a groove gap waveguide. First, we propose an innovative approach to widening the band of the structure by the use of reflection canceling posts (RCPs) integrated within a groove of the waveguide. Then analysis of the RCS is conducted for the proposed antenna. A metasurface is designed to reduce the radar cross-section (RCS) for off-the-grid radar applications.
13:45 - 14:00
Metasurface Design for Monostatic and Bistatic RCS Reduction in X-Band 1Grupo de Radiación, Dpto. de Señales, Sistemas y Radiocomunicaciones, Universidad Politécnica de Madrid. Madrid, España; 2Dpto. de Lenguajes y Ciencias de la Computación, Universidad de Málaga. Málaga, España; 3ITIS Software, Universidad de Málaga. Málaga, España. In this contribution, a metasurface has been designed capable of reducing the radar cross section in X-Band. To this end, the analysis and optimisation of its unit cells and, subsequently, of the complete structure has been carried out. Furthermore, it has been designed in such a way that its response is independent of polarization and target size and works for an incidence range of [-60,60]º. For both monostatic and bistatic, a radar cross section reduction below -12 dB is achieved, which means a reduction in distance of 50%, in a bandwidth of 22.22% (9.2 – 11.5 GHz) for the monostatic case and 19.72% (9.6 – 11.7 GHz) for the bistatic case.
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