Pham-Duy Hung, Nguyen-Tien Dat, Nguyen-Ngoc Thanh, Tran-Viet Duc-Nguyen, Nguyen-Dinh Thai, Pham Tuyen Danh, Tran-Huy Hung
Faculty of Electrical and Electronic Engineering, PHENIKAA University, Yen Nghia, Ha Dong, Hanoi 12116, Vietnam.
Faculty of Radio-Electronic Engineering, Le Quy Don Technical University, Hanoi 11917, Vietnam.
Micromachines (Basel). 2024 Aug 20;15(8):1051. doi: 10.3390/mi15081051.
This paper introduces the design of a circularly polarized metasurface-based antenna array for C-band satellite applications that owns broadband operation and high gain characteristics. The single radiating element comprises a Y-shape patch and an above-placed 2 × 2 unit-cell metasurface. Further improvement in operating bandwidth and broadside gain is achieved by arranging four single elements in a 2 × 2 configuration and a sequential-phase feed network. A prototype has been fabricated and measured to validate the feasibility of the proposed antenna array. The measured operating bandwidth is 20% (4.50-5.50 GHz), which is an overlap between a -10 dB impedance bandwidth of 29.8% (4.50-5.99 GHz) and a 3 dB axial ratio bandwidth of 20% (4.50-5.50 GHz). Across this operating band, the peak broadside gain is 10.5 dBi. Compared with the recently published studies, the proposed array is a prominent design for producing a wide operating bandwidth and relatively high gains while maintaining the overall compact dimensions.
本文介绍了一种用于C波段卫星应用的基于圆极化超表面的天线阵列设计，该天线阵列具有宽带工作和高增益特性。单个辐射单元包括一个Y形贴片和一个位于其上方的2×2单元胞超表面。通过将四个单个单元以2×2配置排列并采用顺序相位馈电网络，实现了工作带宽和宽边增益的进一步提升。制作并测量了一个原型，以验证所提出天线阵列的可行性。测量得到的工作带宽为20%（4.50 - 5.50 GHz），它是29.8%（4.50 - 5.99 GHz）的 -10 dB阻抗带宽和20%（4.50 - 5.50 GHz）的3 dB轴比带宽的重叠部分。在整个工作频段内，峰值宽边增益为10.5 dBi。与最近发表的研究相比，所提出的阵列是一种在保持整体紧凑尺寸的同时，能够产生宽工作带宽和相对较高增益的出色设计。
