An Accurate and Efficient Design Tool for Large Contoured Beam Reflectarrays

Min Zhou, Stig B. Sørensen, Erik Jørgensen, Peter Meincke, Oleksiy S. Kim, Olav Breinbjerg, Giovanni Toso

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    Abstract

    An accurate and efficient tool for the design of contoured beam reflectarrays is presented. It is based on the Spectral Domain Method of Moments, the Local Periodicity approach, and a minimax optimization algorithm. Contrary to the conventional phase-only optimization techniques, the geometrical parameters of the array elements are directly optimized to fulfill the far-field requirements. The design tool can be used to optimize reflectarrays based on a regular grid as well as an irregular grid. Both coand cross-polar radiation can be optimized for multiple frequencies, polarizations, and feed illuminations. Two offset contoured beam reflectarrays that radiate a highgain beam on an European coverage have been designed, manufactured, and measured at the DTU-ESA Spherical Near-Field Antenna Test Facility. An excellent agreement is obtained for the simulated and measured patterns. To show the design tool’s ability to optimize electrically large reflectarrays, a 50 × 50 square wavelengths contoured beam reflectarray has been designed.
    Original languageEnglish
    Title of host publicationProceedings of the ESA Antenna Workshop on Large Deployable Antennas
    Number of pages8
    Publication date2012
    Publication statusPublished - 2012
    EventESA Workshop on Large Deployable Antenna - ESA/ESTEC, Noordwijk, Netherlands
    Duration: 2 Oct 20123 Oct 2012

    Conference

    ConferenceESA Workshop on Large Deployable Antenna
    LocationESA/ESTEC
    Country/TerritoryNetherlands
    CityNoordwijk
    Period02/10/201203/10/2012

    Keywords

    • Printed reflectarrays
    • Accurate antenna analysis
    • Method of moments (MoM)
    • Measurements
    • Contoured beam
    • Optimization
    • Satellite antennas

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