Research papers

This paper describes the design of high-performance contoured beam reflectarrays using a direct optimization technique with an improved optimization engine. In Ku-band, curved reflectarrays allow the reuse of a standard mold for multiple missions and thereby reduce cost and delivery…

This paper focuses on a comparison of possible techniques for grating lobes reduction, applicable to large deployable mesh reflectors based on a peripheral deployable ring. The techniques are applied to the same antenna configuration, and consider not only the theoretical…

The use of curved reflectarrays for telecommunication applications is presented in this paper. For contoured beam applications, the curvature of the reflectarray surface can be used to enhance the bandwidth significantly, yielding reflectarray designs that are equivalent in performance compared…

We present a method that enables full-wave analysis of electrically large antennas and platforms, e.g., a detailed telecommunication satellite at Ka-band. Owing to the efficient formulation, even large problems can be solved on relatively modest computing platforms such as laptops…

Matched feed horns aim to cancel cross polarization generated in offset reflector systems. An analytical method for predicting the mode spectrum generated by inclusions in such horns, e.g. stubs and pins, is presented. The theory is based on the reciprocity…