Wang Junlin, Tong Xinyu, Wang Xin, Guo Yunsheng, Han Xiaoyu, A Saer, Wang Jun
Opt Express. 2024 Nov 4;32(23):40567-40580. doi: 10.1364/OE.542150.
This paper presents the design of an integrated metasurface antenna, which combines a central radiating patch with a quadru-arc (QAS) structure. The metasurface antenna simultaneously achieves high-gain radiation and complex scattering functionality. The modulation of the radiation function is primarily achieved through phase manipulation of the power division feed network, while modulation of the X-polarization scattering function is mainly accomplished by adjusting the arc of the QAS. The effectiveness of this design is verified by designing two metasurface antennas with distinct functionalities. The feed network phases are arranged in a checkerboard pattern in the first approach, resulting in four-beam radiation with a gain of 16 dBi per beam. Additionally, the scattering component utilizes eight scattering structures with a phase difference of 45 degrees to form a 3-bit coding, enabling vortex beam scattering. The second configuration arranges the feed network in phase with the deflected beam, resulting in a deflected beam radiation pattern characterized by a gain of 22.3 dBi. The scattering function is optimized using a simulated annealing-genetic algorithm for phase alignment, resulting in the achievement of RCS reduction across a wide bandwidth range of 8-24 GHz. The proposed metasurface antenna is ultimately fabricated and subjected to rigorous measurements.
本文介绍了一种集成超表面天线的设计，该天线将一个带有四弧（QAS）结构的中心辐射贴片相结合。该超表面天线同时实现了高增益辐射和复杂散射功能。辐射功能的调制主要通过功率分配馈电网络的相位操纵来实现，而X极化散射功能的调制主要通过调整QAS的弧来完成。通过设计两种具有不同功能的超表面天线验证了该设计的有效性。在第一种方法中，馈电网络相位以棋盘图案排列，产生每束增益为16 dBi的四波束辐射。此外，散射组件利用八个相位差为45度的散射结构形成3位编码，实现涡旋波束散射。第二种配置使馈电网络与偏转波束同相排列，产生增益为22.3 dBi的偏转波束辐射方向图。使用模拟退火遗传算法对相位对齐进行优化散射功能，从而在8-24 GHz的宽带范围内实现RCS降低。最终制作了所提出的超表面天线并进行了严格的测量。
