Authors: B.Jecko, M. Majed, M. Rammal, H. Abou Taam, J. Andrieu
Source: FERMAT, Volume 44, Article 3, Mar.-Apr., 2021
Abstract: The beam-steering procedure is usually performed using the AESA (Agile Electronically Scanned Array) technique which presents some limitations. Therefore, the question is: Is the array technique the best solution to perform the beam-steering? To answer this question, a rigorous approach has been performed and after, sampling procedures were applied to introduce the agility. The use of a Dirac Comb sampler leads to the array solution (AESA), while a more accurate sampling procedure based on rectangular functions leads to an intrinsically better design than the array, based on “pixels”. The advantage is highly significant in order to obtain beams corresponding to high steering angles; particularly wide frequency band solutions are obtained with pixelization lobes more than 6 dBi lower than AESA grating lobes.
Finally, only this new approach is optimized to offer a highly efficient solution for Telecommunications, Radar and Electronic Warfare applications.
Index Terms: AESA, ARMA, Beam-steering.
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Beam-steering improvements using agile beam radiating surfaces