A Two-Steps Optimal Full-Wave Design of Slotted Arrays for Arbitrarily Constrained Pencil Beams

• Published in: IEEE antennas and wireless propagation letters Vol. 24; no. 9; pp. 2999 - 3003
• Main Authors: Guarnera, Davide, Pavone, Santi C., Morabito, Andrea, Donato, Loreto Di, Isernia, Tommaso, Sorbello, Gino
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.09.2025; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna radiation patterns; Arrays; CAD; Circular polarization; Circularly polarized (CP) slotted arrays; Computational efficiency; Computer aided design; convex programming; Convexity; Electromagnetic waveguides; Ion beams; Linear polarization; linearly polarized (LP) slotted arrays; Mathematical models; narrow beam pattern synthesis; Optimization; optimization algorithm; Pencil beams; Sidelobes; Slot antennas; Solid modeling; substrate integrated waveguide (SIW) slotted arrays; Substrate integrated waveguides; Upper bound; Upper bounds
• ISSN: 1536-1225; 1548-5757; 1548-5757
• DOI: 10.1109/LAWP.2025.3579550

In this letter, a method for the full-wave design of slotted arrays for maximally focused beam with arbitrarily given upper bound constraints on the sidelobes is described and validated. In particular, the pattern synthesis problem is reduced to the solution of a convex programming problem followed by an optimization of the slot positions and/or dimensions, which is obtained by interfacing an in-house developed optimization algorithm with an electromagnetic computer-aided design (CAD). In total, three design examples are reported to show the effectiveness and the generality of the proposed approach; namely, two examples of linearly polarized slotted arrays, designed in standard waveguide and in substrate integrated waveguide (SIW) technology, and a circularly polarized slotted array designed in SIW technology.