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Título: Comparison of Different Approaches in Reflectarray Synthesis Based on Intersection Approach
Autores: Rodriguez Prado, Daniel
López Fernádez, Jesús Alberto
Arrebola Baena, Manuel
Rodríguez Pino, Marcos
Goussetis, George
Palabras Claves: reflectarray antenna
phase-only synthesis
numerical technique
differential contributions
satellite broadcasting
Fecha Edición: Sep-2019
Cita Bibliográfica: D. R. Prado, J. A. López-Fernández, M. Arrebola, M. R. Pino, G. Goussetis, "Comparison of Different Approaches in Reflectarray Synthesis Based on Intersection Approach", International Conference on Electromagnetics in Advanced Applications (ICEAA), Granada, Spain, 9-13/09/2019
Resumen: This work presents a comparison between a number of numerical techniques for the copolar synthesis of reflectarray antennas. These techniques are based on the generalized intersection approach. The classical phase-only synthesis (POS) is considered using different methodologies to compute the gradient: the analytical approach by exactly calculating the derivative and two numerical methods based on finite differences, one using the FFT and another the technique of differential contributions (DFC). In addition, a direct layout optimization (DLO) for copolar synthesis is also considered. In order to make the DLO efficient, a surrogate model of the unit cell is employed. A computing time study is presented, showing that for copolar only synthesis at a single frequency, the POS technique using DFC has superior performance. Finally, a large reflectarray with European footprint for satellite broadcasting is synthesized, comparing the results obtained with all techniques.
Aparece en las Colecciones:Ingeniería

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