A novel beam steering device using gratings integrated on rib waveguides as input and output couplers is proposed. Phasing is achieved electro‐optically by applying an electric field on an indium‐tin‐oxide/AlGaAs Schottky junction. A two elements device is first used to characterize the phase modulation characteristics of the structure. A 43 elements device with sawtooth electrodes is then presented, that permits spatial three‐point digital beam steering or amplitude modulation. The outcoupled beams have an angular width of 1.8 mrad full width at half maximum. The switched beam angular separation is 9 mrad, the switching voltage is −21 V.