Antenna with reduced scanning step over a wide angular sector

摘要

The invention relates to an antenna with reduced scanning step over a wide angular sector of the kind implementing several flat radiating sources 6 with directional radiation. The radiating sources 6 are arranged along several generatrices, at the periphery of a cylindrical lens 1 of non-uniform cross section, whose refractive index varies radially, by virtue of grooves 2 whose width decreases from the periphery towards the centre of the lens. <IMAGE>