An X-band Lens Antenna Based on Metasurface
An X-band Lens Antenna Based on Metasurface
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DOI：
10.1109/ucmmt58116.2023.10310524
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发表时间：
2023-08
期刊：
影响因子：
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通讯作者：
Yunan Jiang;Mingyan Zhong;Yufei Ma;E. M. Khusna;Yi Yi-Yi;A. Ofiare;Q. Al-Taai;Ali Al-Moathin;Chong Li
中科院分区：
文献类型：
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作者：
Yunan Jiang;Mingyan Zhong;Yufei Ma;E. M. Khusna;Yi Yi-Yi;A. Ofiare;Q. Al-Taai;Ali Al-Moathin;Chong Li
在本文中，我们提出了一种低成本，高增益透镜天线工作在X波段，由一个超表面为基础的平面透镜和一个标准的贴片天线。该平面透镜包括三层，包括两个交叉偏振光栅外层和基于元原子的中间层。馈电天线是在近场中操作的标准贴片天线。通过适当地设计元原子，透镜可以实现从0°到360°的相对相移范围，这对于将馈电天线的球面波阵面朝向透镜引导是至关重要的。透镜面积为160 mm × 160 mm，各层之间的间距为3 mm。贴片天线位于距离透镜100 mm处。仿真和实验结果表明，该光纤放大器的焦距为50 mm，焦点处的光束直径为10 mm，增益为13.5 dB（10 GHz）。这些紧凑、低成本的透镜天线具有在空间有限的环境中使用的潜力。
In this paper, we present a low-cost, high-gain lens antenna operating at X-band that consists of a metasurface-based flat lens and a standard patch antenna. The flat lens comprises three layers, including two outer layers of cross-polarized gratings and a meta-atom-based middle layer. The feed antenna is a standard patch antenna operating in the near field. By designing the meta-atoms appropriately, the lens can achieve a relative phase shift range from 0° to 360°, which is crucial for directing the feed antenna's spherical wavefronts towards the lens. The lens area measures 160 mm × 160 mm, with a separation of 3 mm between the layers. The patch antenna is situated 100 mm away from the lens. Simulation and experimental results demonstrate that the focal length is 50 mm, the beam diameter at the focal point is 10 mm, and the gain is 13.5 dB at 10 GHz. These compact, low-cost lens antennas have the potential to be utilized in environments where space is limited.