An antenna feed assembly , comprising: a first layer having a top surface and a bottom surface , the bottom surface of the first layer comprising recesses that define portions of a first polarization-forming network, the first polarization-forming network comprising: a first pair of individual waveguides ; a first hybrid comprising a first pair of ports coupled to the first pair of individual waveguides and further comprising a second pair of ports ; a first filter of a first diplexer coupled to one of the second pair of ports; and a first filter of a second diplexer coupled to another of the second pair of ports; a second layer having a top surface and a bottom surface , the top surface of the second layer extending across the recesses of the bottom surface of the first layer to form remaining surfaces of the first polarization-forming network, the bottom surface of the second layer comprising recesses that define portions of a second polarization-forming network, the second polarization-forming network comprising: a second pair of individual waveguides ; a second hybrid underlying the first hybrid and comprising a third pair of ports coupled to the second pair of individual waveguides and further comprising a fourth pair of ports ; a second filter of the first diplexer coupled to one of the fourth pair of ports and underlying the first filter of the first diplexer; and a second filter of the second diplexer coupled to another of the fourth pair of ports and underlying the first filter of the second diplexer. a first layer having a top surface and a bottom surface , the bottom surface of the first layer comprising recesses that define portions of a first polarization-forming network, the first polarization-forming network comprising: a first pair of individual waveguides ; a first hybrid comprising a first pair of ports coupled to the first pair of individual waveguides and further comprising a second pair of ports ; a first filter of a first diplexer coupled to one of the second pair of ports; and a first filter of a second diplexer coupled to another of the second pair of ports; a first pair of individual waveguides ; a first hybrid comprising a first pair of ports coupled to the first pair of individual waveguides and further comprising a second pair of ports ; a first filter of a first diplexer coupled to one of the second pair of ports; and a first filter of a second diplexer coupled to another of the second pair of ports; a second layer having a top surface and a bottom surface , the top surface of the second layer extending across the recesses of the bottom surface of the first layer to form remaining surfaces of the first polarization-forming network, the bottom surface of the second layer comprising recesses that define portions of a second polarization-forming network, the second polarization-forming network comprising: a second pair of individual waveguides ; a second hybrid underlying the first hybrid and comprising a third pair of ports coupled to the second pair of individual waveguides and further comprising a fourth pair of ports ; a second filter of the first diplexer coupled to one of the fourth pair of ports and underlying the first filter of the first diplexer; and a second filter of the second diplexer coupled to another of the fourth pair of ports and underlying the first filter of the second diplexer. a second pair of individual waveguides ; a second hybrid underlying the first hybrid and comprising a third pair of ports coupled to the second pair of individual waveguides and further comprising a fourth pair of ports ; a second filter of the first diplexer coupled to one of the fourth pair of ports and underlying the first filter of the first diplexer; and a second filter of the second diplexer coupled to another of the fourth pair of ports and underlying the first filter of the second diplexer. <EOS>