An in-line additive acousto-optic architecture for very high speed (almost-equal-to 0.4-mu-s) two-dimensional, phased-array antenna beam scanning is introduced that uses only two independent analog scan control signals. Features include up to K(u) band operation, intrapulse beam forming, and multiband, wide (2-GHz) tunable bandwidth capability.An in-line additive acousto-optic architecture for very high speed (almost-equal-to 0.4-mu-s) two-dimensional, phased-array antenna beam scanning is introduced that uses only two independent analog scan control signals. Features include up to K(u) band operation, intrapulse beam forming, and multiband, wide (2-GHz) tunable bandwidth capability.