Research papers

The design of an aperiodic frequency selective surface (FSS) for compact quasi-optical networks is presented in this paper. Using a newly developed Physical Optics (PO) method in conjunction with a direct optimisation approach where all elements are simultaneously optimised, an…

The monostatic Radar Cross Section (RCS) is an important design parameter for many applications but accurate RCS prediction of an electrically large structure continues to be a challenging task. High accuracy demands and a complicated geometry often mean that asymptotic…

An investigation of curved contoured beam reflectarrays with reusable surface for multiple coverages is presented. The main advantage of curved reflectarrays over shaped reflectors is that they allow the possibility of reusing a standard parabolic mold for multiple missions. To…

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…