Print Email Facebook Twitter Concentric Ring Array Synthesis for Low Side Lobes Title Concentric Ring Array Synthesis for Low Side Lobes: An Overview and a Tool for Optimizing Ring Radii and Angle of Rotation Author Aslan, Y. (TU Delft Microwave Sensing, Signals & Systems) Roederer, A.G. (TU Delft Microwave Sensing, Signals & Systems) Yarovoy, Alexander (TU Delft Microwave Sensing, Signals & Systems) Date 2021 Abstract A comprehensive review on the approaches for synthesizing low side lobe concentric ring array (CRA) antennas is given. An Iterative Convex Optimization (ICO) based array layout synthesis technique is proposed for peak side-lobe level (PSLL) minimization over a given circular field-of-view in steerable uniform-amplitude concentric ring array (UA-CRA) antennas. For a given number of rings and number of uniformly-distributed elements in each ring, the ICO algorithm optimizes the ring radii and angle of rotation, with possible constraints on the minimum element separation and largest array size. As compared to the existing UA-CRA synthesis techniques, the proposed method presents unique features as it combines the capability of optimization of angle of rotation of the rings and PSLL minimization for multiple elevation scan angles in a computationally-efficient and easy-to-solve procedure. Through numerical design examples, it is demonstrated how the ICO technique can be effectively used (i) to synthesize sparse UA-CRA topologies generating low PSLL steerable beams, and (ii) to assess and improve the PSLL suppression performance of various known optimization algorithms. Based on the UA-CRA topologies synthesized via competitive methods in the recent literature, a new set of improved array topologies are presented. Subject Array synthesisconcentric ring arraysconvex optimizationisophoric arrayslow side-lobe levelsparse arrays To reference this document use: http://resolver.tudelft.nl/uuid:d52849c5-4026-4a9d-8c6b-12f0447118b0 DOI https://doi.org/10.1109/ACCESS.2021.3109171 ISSN 2169-3536 Source IEEE Access, 9, 120744-120754 Part of collection Institutional Repository Document type journal article Rights © 2021 Y. Aslan, A.G. Roederer, Alexander Yarovoy Files PDF Concentric_Ring_Array_Syn ... tation.pdf 4.28 MB Close viewer /islandora/object/uuid:d52849c5-4026-4a9d-8c6b-12f0447118b0/datastream/OBJ/view