Abstract: A transmit and/or receive array antenna comprises an array (R) of sub-arrays (SR) of at least one radiating element (ER) and control means charged with controlling the amplitude and/or the phase of the radiofrequency signals to be transmitted or received in the form of waves by each of the sub-arrays (SR) so that they transmit or receive signals according to a chosen pattern. The sub-arrays (SR) comprise a mean number of radiating elements (ER) which increases from the center of the array (R) to its periphery, and are arranged with respect to one another so as to constitute an irregular mesh offering pattern sidelobes of low intensity and a high gain in a favored direction.

Abstract: The present invention relates to a method of repainting a reflector array antenna comprising a plurality of radiating elements and being of the type that forms beams by computation, in which method each signal received by said antenna is sampled. The method comprises the following operations: estimating the depointing of the radiation pattern of the antenna to obtain a phase shift matrix, computing the discrete inverse Fourier transform of the signal samples supplied by the radiating elements, multiplying the phase shift matrix by the inverse Fourier transform of the sampled signal, and computing the discrete direct Fourier transform of the product of the phase shift matrix and the inverse Fourier transform of the sampled signal.