Dual-Polarization Ku-Band Compact Spaceborne Antenna Based on Dual-Reflectarray Optics
Por:
Tienda C, Encinar JA, Barba M and Arrebola M
Publicada:
1 abr 2018
Resumen:
This article demonstrated an accurate analysis technique for dual-reflectarray antennas that take into account the angle of incidence of the impinging electric field on the main reflectarray cells. The reflected field on the sub and the main reflectarray surfaces is computed using Method of Moments in the spectral domain and assuming local periodicity. The sub-reflectarray is divided into groups of elements and the field radiated by each group is used to compute the incident and reflected field on the main reflectarray cells. A 50-cm demonstrator in Ku-band that provides European coverage has been designed, manufactured and tested to validate the analysis technique. The measured radiation patterns match the simulations and they fulfill the coverage requirements, achieving a cross-polar discrimination better than 25 dB in the frequency range: 12.975-14.25 GHz.
Filiaciones:
Tienda C:
Airbus Defence and Space, Gunnels Wood Road, Stevenage SG1 2AS, UK.
:
Information, Processing and Telecommunications Center, Universidad Politécnica de Madrid (UPM), 28040 Madrid, Spain.
Arrebola M:
Department of Electrical Engineering, University of Oviedo, 33203 Gijón, Spain.
Green Published, Green Submitted, gold
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