Mobile communication satellite payload

摘要

A phased array transmitter antenna assembly is described. It comprises n transmitter elements arranged in a predetermined pattern, each of said n transmitter elements having power amplifier means associated therewith, each of said power amplifier means having an output coupled into free space at said associated one of said n transmitter elements, m beam forming circuit means, individual ones of said m beam forming circuit means being disposed one upon another in a stacked fashion beneath said n transmitter elements, each of said m beam forming circuit means having n outputs and m-way power combiner means coupled to said m beam forming circuit means, each of said m-way power combiner means having individual ones of m inputs coupled to an output of each one of said m beam forming circuit means, each of said n m-way power combiner means having an output coupled to one of said power amplifier means associated with one of said n transmitter elements.