用于广角三维波束扫描与目标跟踪的主动半球型超表面透射阵天线
Active Hemispherical Metasurface Transmitarray Antenna for Wide-Angle 3D Beam Steering and Target Tracking
浏览论文内容
中文总结 AI 辅助
本研究开发了工作在250 GHz的主动半球型石墨烯基透射阵天线，利用CST Studio Suite宏实现121个可调石墨烯扇区，可完成广角三维波束扫描，适用于移动目标跟踪应用。
中文摘要 AI 辅助
本文开发了一种工作在250 GHz的堆叠多层半球型石墨烯基透射阵天线，以实现广角三维波束扫描。本研究提出了首个用于构建多层半球几何结构并配置121个独立可调石墨烯扇区的全自动CST Studio Suite宏。数值结果证实，压控石墨烯扇区与FCC金贴片的结合可实现广角波束扫描，在θ方向的俯仰扫描范围为-78°至78°，方位角覆盖范围为完整360°，同时保持稳定的辐射特性和宽带阻抗匹配（|S11| < -10 dB），相对带宽为40%。该天线在所有研究的扫描方向上实现了11.38至14.72 dBi的方向性范围和-6.8至-9.8 dB的副瓣电平范围，在整个扫描范围内保持71%至80%的高天线效率，因缺陷导致的效率下降为5%，使其成为实际移动目标跟踪应用的有前景候选方案。
英文摘要
A stacked multilayer hemispherical graphene-based transmitarray antenna operating at 250 GHz is developed to achieve wide-angle 3D beam steering. This work presents the first fully automated CST Studio Suite macro for constructing the multilayer hemispherical geometry and configuring 121 independently tunable graphene sectors. Numerical results confirm that the integration of voltage-controlled graphene sectors with FCC gold patches enables wide-angle beam steering, achieving an elevation scanning range of -78° to 78° in θ and full 360° azimuthal coverage while maintaining stable radiation characteristics and broadband impedance matching (|S11| < -10 dB) with a relative bandwidth of 40%. The antenna achieves a directivity range of 11.38 - 14.72 dBi and an SLL range of -6.8 to -9.8 dB across all investigated steering directions. It also maintains high antenna efficiencies from 71% to 80% with a 5% degradation due to imperfections across the entire scanning range, making it a promising candidate in practical moving-target-tracking applications.
