Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique. Issue 11 (19th September 2022)

• Record Type: Journal Article
• Authors: Khan, Taimur Ahmed; Khattak, Muhammad Irfan; Asif, Muhammad; Ahmad, Gulzar; Ibrar, Muhammad; Ali, Esraa Mousa; Alibakhshikenari, Mohammad; Dalarsson, Mariana
• Is Part Of: International journal of RF and microwave computer-aided engineering. Volume 32:Issue 11(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-09-19
• Subjects: conformal array antenna -- convex optimization -- least square optimization -- mutual coupling compensation -- radiation pattern correction; Microwave devices -- Computer-aided design -- Periodicals; Computer-aided engineering -- Periodicals; 621.3813
• DOI: 10.1002/mmce.23393
• Languages: English
• ISSNs: 1096-4290

Abstract

Abstract: In this paper, a modified convex optimization technique is used for radiation pattern correction in a cylindrical‐shaped conformal microstrip array antenna. The technique uses numerical simulations to optimize the amplitude and phase excitations, with the goal to decrease the Euclidean distance between the desired field pattern and the obtained (simulated/measured) field pattern while maintaining the main beam direction, null's location, and side lobe levels under control. Two prototypes of 1 × 4 and 2 × 4 conformal microstrip antenna array deformed from linear/planar structure to the prescribed cylindrical shape, with different radii of curvature, are studied to demonstrate the performance of the proposed technique. The proposed convex optimization model when applied to conformal antenna array possesses fast computing speed and high convergence accuracy for radiation pattern synthesis, which can be a valuable tool for engineering applications.