Low-Complexity Phase-Only Scanning by Aperiodic Antenna Arrays

This letter proposes a simple and fast method for phase-only beam-scanning of linear aperiodic arrays. The method adopts a three-step procedure, consisting in the placement of the array elements by proper distribution functions, in the synthesis of the excitation amplitudes by an extended Gaussian approach, and in the evaluation of the excitation phases by a closed-form shifting. Numerical examples and comparisons with existing approaches are presented to check the effectiveness of the method, with the final aim of confirming its satisfactory behavior in terms of tradeoff between accuracy and computational cost.