Sheng Lili, Luo Yumei, Ning Gangxin, Meng Liang, Cao Weiping
Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing, Guilin University of Electronic Technology, Guilin 541004, China.
School of Electronic Information and Automation, Guilin University of Aerospace Technology, Guilin 541004, China.
Micromachines (Basel). 2023 Aug 18;14(8):1631. doi: 10.3390/mi14081631.
In this paper, we proposed a multibeam switching antenna based on a low-cost reconfigurable hybrid metasurface applied for beamforming systems. The antenna consists of two parts: a microstrip feed antenna and a transmission hybrid metasurface. The latter is composed of three types of units with different amplitude and phase responses to electromagnetic waves so as to control the beams of the feed antenna. Sixteen PIN diodes are arranged in the metasurface with a simple bias network. When two different direct-current voltages are applied to the PIN diodes, the antenna can dynamically switch between two beams and four beams. For demonstration, the proposed antenna is fabricated, and the measured results show that the antenna operates at 9.07-9.42 GHz (-10 dB bandwidth) with a total size of 1.80λ × 1.52λ × 0.22λ (λ corresponds to the wavelength of 9.28 GHz in free space). With the merits of a compact structure, low cost and good radiation performance, the proposed design is suitable for beamforming applications.
在本文中，我们提出了一种基于低成本可重构混合超表面的多波束切换天线，应用于波束形成系统。该天线由两部分组成：一个微带馈电天线和一个传输混合超表面。后者由三种对电磁波具有不同幅度和相位响应的单元组成，以便控制馈电天线的波束。十六个PIN二极管通过一个简单的偏置网络布置在超表面中。当向PIN二极管施加两种不同的直流电压时，天线可以在两波束和四波束之间动态切换。为了进行演示，制作了所提出的天线，测量结果表明该天线在9.07 - 9.42 GHz（-10 dB带宽）工作，总体尺寸为1.80λ×1.52λ×0.22λ（λ对应于自由空间中9.28 GHz的波长）。该设计具有结构紧凑、成本低和辐射性能良好的优点，适用于波束形成应用。
