Efficient Analysis and Optimization of Reflectarray Antennas for Satellite Telecommunication Missions

  1. Daniel Rodríguez Prado 1
  2. Manuel Arrebola 1
  3. Jesús Alberto López 1
  4. Marcos Rodríguez Pino 1
  5. Georges Goussetis
  6. José Antonio Encinar
  1. 1 Universidad de Oviedo
    info

    Universidad de Oviedo

    Oviedo, España

    ROR https://ror.org/006gksa02

Actas:
39th ESA Antenna Workshop on Multibeam and Reconfigurable Antennas for Space Applications

Año de publicación: 2018

Congreso: ESA Antenna Workshop on Multibeam and Reconfigurable Antennas for Space Applications (39th. 2018. Noordwijk, The Netherlands)

Tipo: Aportación congreso

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Resumen

This contribution describes a general framework for the optimization of very large reflectarrays for space applications. It employs the generalized Intersection Approach with a series of techniques to accelerate computations. In particular, a machine learning technique is used to obtain a surrogate model of the reflectarray unit cell. Also, the gradient computation is accelerated by employing differential contributions on the radiated field. Computations may also be accelerated with the NUFFT employing a non-uniform grid in the spectral domain. Finally, instead of optimizing the crosspolar pattern, the XPD or XPI are optimized, improving both the antenna and algorithm performance. Relevant numerical examples are provided to show the capabilities of the proposed framework and acceleration techniques.

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Información de financiación

This work was supported in part by the European Space Agency (ESA) under contract ESTEC/AO/1-7064/12/NL/MH; 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 through Programa "Clarín" de Ayudas Postdoctorales / Marie Curie-Cofund under project ACA17-09.

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