Multiparametric Analysis and Optimization for Narrow Beams Radiating From Finite Antenna Arrays

• Published in: IEEE transactions on magnetics Vol. 44; no. 6; pp. 1670 - 1673
• Main Authors: Braunstein, J., Hyeong-Seok Kim, Kyung Choi
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01-06-2008; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna arrays; Antenna radiation patterns; Antennas; Arrays; Beams (radiation); Computational modeling; Cross-disciplinary physics: materials science; rheology; Design optimization; Exact sciences and technology; Frequency; Geometry; Interpolation; Magnetism; Materials science; Mathematical analysis; Method of moments (MoMs); model-based parameter estimation; Optimization; Other topics in materials science; Parameter estimation; Patch antennas; Perturbation methods; Phased arrays; Physics; Planar arrays; planar arrays; Modelling; optimization; Method of moments (MoMs); Magnetic properties; model-based parameter estimation
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2008.915844

In this paper, a method to improve radiation characteristics of a finite planar array by introducing small perturbations in patch antenna locations is presented. The dependence of the radiation patterns of an individual antenna element in the array is determined for a restricted range of patch locations relative to the array substrate edge and the neighboring antennae elements. A polynomial interpolation function is utilized to map the geometry variables of each antenna to the corresponding radiation pattern. Optimization schemes are then applied to determine the excitation amplitude, phase, and relative spacing of each antenna.