Thales

Benjamin Rouzeaud

Claude Chekroun

Marc-Yves Lienhart

Marc Yves Lienhart

The invention refers to array antennas consisting of a set of individual sources set out over the surface of the antenna and whose mechanical positioning is determined in such a way as to obtain the desired radiation pattern. The process according to the invention is designed to compensate for the positioning errors of radiating elements occurring when such an antenna is constructed. These positioning errors follow a law that is in theory random and whose result is known by determining the imperfection vector I whose components of real positioning errors measured for each feed of the antenna obtained comprising components forming values of an error function &#x3b4;(n) where n represents the index attributed to the radiating element in question. The process according to the invention consists in first measuring the positioning errors. It then consists in determining the spatial spectral components making up error function &#x3b4;(n). It finally consists in applying to each component an amplitude or phase modulation correction in order to compensate for the degradation of the error function &#x3b4;(n) on the obtained antenna radiation pattern F(&#x3b8;). The process according to the invention applies more particularly to antennas comprising radiating beams.

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Friaucourt, France

Benjamin Rouzeaud