Methods and apparatus for an antenna assembly including one or more array blocks having one or more corporate manifolds, each having an input port, a plurality of output ports, and a plurality of phase shifters, each of the phase shifters located at a respective one of the output ports. Array blocks can further include a plurality of serial manifolds each having an input port and a plurality of output ports, the input port coupled to a respective output port of one of the corporate manifolds; and plurality of antenna elements coupled to respective output port of one of the serial manifolds.