Publication: Research - peer-review › Article in proceedings – Annual report year: 2012
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.
|Title||Proceedings of the ESA Antenna Workshop on Large Deployable Antennas|
|Number of pages||8|
|Conference||ESA Workshop on Large Deployable Antenna|
|Period||02/10/12 → 03/10/12|
- Printed reflectarrays, Accurate antenna analysis, Method of moments (MoM), Measurements, Contoured beam, Optimization , Satellite antennas
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