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Por favor, use este identificador para citar o enlazar este documento: https://ria.asturias.es/RIA/handle/123456789/11931
Título : Crosspolar Optimization in Reflectarray Antennas for DBS missions
Autor : Rodriguez Prado, Daniel
Arrebola Baena, Manuel
Rodríguez Pino, Marcos
Goussetis, George
Palabras clave : reflectarray antennas
satellite mission
polarization purity
crosspolar discrimination (XPD)
crosspolar isolation (XPI)
cross-polarization performance
shaped beams
Fecha de publicación : sep-2019
Citación : D. R. Prado, M. Arrebola, M. R. Pino, G. Goussetis, "Crosspolar Optimization in Re- flectarray Antennas for DBS Missions", International Conference on Electromagnetics in Advanced Applications (ICEAA), Granada, Spain, 9-13/09/2019
Resumen : Current satellite applications for communications specify very tight cross-polarization values, usually with parameters such as the crosspolar discrimination (XPD) larger than 33 dB. To obtain these values, optimization of the cross-polarization performance has to be performed. The most common approach is to minimize the crosspolar component of the radiation pattern with regard to the copolar pattern in a subset of the visible region, corresponding to the coverage area. Nevertheless, this type of optimization provides suboptimal results since the figure of merit for cross-polarization performance (e.g. the XPD) is only optimized indirectly. Thus, in this work we propose to directly optimize the figure of merit to considerably improve the polarization purity of reflectarrays for satellite missions. For that purpose, the generalized intersection approach algorithm is employed in a very large reflectarray for a shaped beam application with European footprint. We show that directly optimizing the cross-polarization figure of merit provides better results than the usual approach of minimizing the crosspolar far field.
URI : https://ria.asturias.es/RIA/handle/123456789/11931
Aparece en las colecciones: Ingeniería

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