Sub-Reflectarrays Performances for Reconfigurable Coverages

Menudier, Cyrille; Koleck, T.

doi:10.1109/tap.2012.2196907

Cited by 4 publications

(1 citation statement)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the last years, a reflectarray as sub reflector has been combined with large main parabolic reflectors, the high gain characteristics of the reflector are combined with the degree of freedom of a reflectarray subreflector. A sub-reflectarray can improve the behavior of the antenna, either correcting the surface errors of the deployable surface [ 12 ], or providing beam scanning within certain angular range [ 12 , 13 ]. When using electronic controlled elements like MEMs [ 14 , 15 , 16 ], PIN diodes [ 17 , 18 ], varactor diodes [ 19 ] or liquid crystal elements [ 20 , 21 , 22 ] for frequencies higher than 100 GHz.…”

Section: Introductionmentioning

confidence: 99%

Dual-Polarization Ku-Band Compact Spaceborne Antenna Based on Dual-Reflectarray Optics

Tienda

Encinar

Barba

et al. 2018

Sensors

View full text Add to dashboard Cite

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.

show abstract