Patent

The present document discloses a steerable-beam microwave antenna, arranged for steering a beam relative to a longitudinal axis of the antenna, comprising: a discrete transmitarray comprising a plurality of sub-wavelength phase-shifting unit-cells, rotatably mounted for rotating about said longitudinal axis, having an aperture orthogonal to said longitudinal axis; a feeder for emitting and/or receiving a microwave signal to and/or from the discrete transmitarray, comprising at least one rotatable feeding part; wherein the unit-cell layout of the discrete transmitarray has a phase distribution which superimposes a phase gradient along a transversal axis orthogonal to said longitudinal axis and a rotationally-symmetric phase correction centred on said longitudinal axis. It is also disclosed a method for operating and a method of manufacturing said steerable-beam microwave antenna.