Maria, Alberto Di; Limbach, Markus; Horn, Ralf; Reigber, Andreas (Microwaves and Radar Institute, German Aerospace Center (DLR), P.O. Box 1116, 82230 Wessling, Germany)
In this paper a reflectarray design for a membrane spaceborne antenna to be used in a typical SAR mission is presented. An L-Band reflectarray, with a dimension of 10 by 6 meters on Kapton foil substrate, has been designed. To evaluate the tolerance to the membrane deformations, a model for the surface wrinkles and sag is developed and their effects on the antenna performance are analyzed. Finally, a full-wave numerical analysis has been performed and the result are presented.