Multi-frequency broadband optimization of spaceborne reflectarrays for space applications

Daniel R. Prado, Manuel Arrebola, Marcos R. Pino, George Goussetis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Direct-to-home (DTH) applications usually require a radiation pattern with a given footprint on the surface of the Earth and impose stringent cross-polarization requirements in the form of crosspolar discrimination (XPD) or crosspolar isolation in a given bandwidth. This paper describes a multi-frequency broadband optimization procedure and performance results of a very large spaceborne reflectarray for DTH application in a 10% bandwidth. The proposed design methodology is based on the generalized intersection approach and the use of a multi-resonant unit cell with multiple degrees of freedom (DoF). The procedure is divided into three stages to facilitate convergence towards a broadband performance. First, a initial narrowband design at central frequency is obtain. Then, a broadband optimization including XPD requirements is carried out with a limited number of DoF. Finally, more DoF are included in the last stage optimization to obtain a broadband reflectarray with improved cross-polarization performance.

Original languageEnglish
Title of host publication2020 International Workshop on Antenna Technology (iWAT)
PublisherIEEE
ISBN (Electronic)9781728126401
DOIs
Publication statusPublished - 13 May 2020
Event2020 International Workshop on Antenna Technology - Bucharest, Romania
Duration: 25 Feb 202028 Feb 2020

Conference

Conference2020 International Workshop on Antenna Technology
Abbreviated titleiWAT 2020
CountryRomania
CityBucharest
Period25/02/2028/02/20

Keywords

  • Generalized intersection approach
  • Optimization
  • Reflectarrays
  • Shaped-Beam
  • Space communications

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electronic, Optical and Magnetic Materials
  • Instrumentation

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  • Cite this

    Prado, D. R., Arrebola, M., Pino, M. R., & Goussetis, G. (2020). Multi-frequency broadband optimization of spaceborne reflectarrays for space applications. In 2020 International Workshop on Antenna Technology (iWAT) [9083927] IEEE. https://doi.org/10.1109/iWAT48004.2020.1570598782