Comparison of Different Approaches in Reflectarray Synthesis Based on Intersection Approach

  1. Rodríguez Prado, Daniel 1
  2. López Fernández, Jesús Alberto 1
  3. Arrebola Baena, Manuel 1
  4. Rodríguez Pino, Marcos 1
  5. Goussetis, George
  1. 1 Group of Signal Theory and Communications, Universidad de Oviedo
Actas:
International Conference on Electromagnetics in Advanced Applications (ICEAA)

Año de publicación: 2019

Congreso: International Conference on Electromagnetics in Advanced Applications (ICEAA) (21st. 2019. Granada, Spain)

Tipo: Aportación congreso

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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.

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Información de financiación

This work was supported in part by the Ministerio de Ciencia, Innovación y Universidades under project TEC2017-86619-R (ARTEINE); by the Ministerio de Economía, Industria y Competitividad under project TEC2016-75103-C2-1-R (MYRADA); by the Gobierno del Principado de Asturias/FEDER under Project GRUPIN-IDI/2018/000191; by the Gobierno del Principado de Asturias through Programa “Clarín” de Ayudas Postdoctorales / Marie Curie-Cofund under project ACA17-09; by Ministerio de Educación, Cultura y Deporte / Programa de Movilidad “Salvador de Madariaga” (Ref. PRX18/00424).

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