Phase-only synthesis of non-/spl phi/-symmetric patterns for reflectarray antennas with circular boundary

A method for synthesizing non-/spl phi/-symmetric patterns radiated by planar reflectors made of a large number of reflecting elements is presented in this letter. It is an extension to phase-only synthesis of a previous method that uses the modified Taylor expressions for circular apertures to provide good non-/spl phi/-symmetric patterns. The possibility of selecting any kind of amplitude distribution allows the synthesis of patterns radiated for planar reflect-arrays including those with an offset feed.