A low scattering tightly coupled dipole array based on frequency-selective polarization converter. (12th January 2023)

• Record Type: Journal Article
• Authors: Liu, Chao; Qin, Zhe; Li, Yongfeng; Liu, Tonghao; Wang, Jiafu; Qu, Shaobo
• Is Part Of: Journal of physics. Volume 56:Number 2(2023)
• Publication Date: 2023-01-12
• Subjects: frequency selective surface -- simulated annealing algorithm -- tightly coupled dipole array -- radar cross section; Physics -- Periodicals; 530
• DOI: 10.1088/1361-6463/ac9b65
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this paper, a low radar cross section (RCS) tightly coupled dipole array (TCDA) based on novel dual-polarized frequency-selective polarization converter (FSPC) has been proposed. The proposed FSPC structure is comprised of a polarization conversion metasurface and a band-pass frequency selective surface, and the coding sequence of FSPC can be derived by simulated annealing algorithm to achieve simulated mono-static RCS reduction. The process of the co-design of the TCDA with FSPC is presented, and the radiation performance of the antenna array meets the design requirements. A TCDA sample and 20 × 20 FSPC elements were designed and fabricated. The measured results indicated that a significant reflection reduction from 15 GHz to 21 GHz compared with a metallic plane of the same size at the boresight, and the simulated and measured normalized radiation patterns are in good agreement.