【作者】 王杰传； 汪敏； 吴昊； 刘丰铭；

【Author】 WANG Jiechuan;WANG Min;WU Hao;LIU Fengming;Key Laboratory of Near-Range RF Sensing ICs & Microsystems,Ministry of Education,School of Electronic and Optical Engineering,Nanjing University of Science and Technology;

【机构】 南京理工大学电子工程与光电技术学院近程射频感知芯片与微系统教育部重点实验室；

【摘要】 文中提出了一种基片集成同轴线(SICL)馈电的全息波束扫描天线,具备低剖面、低损耗和易集成的优点。在上层金属面刻蚀环形缝隙辐射单元,有效提升了天线的辐射效率。结合全息天线的设计方法,通过对缝隙单元的"开"和"关"状态调控,实现了全息干涉图样的合成,从而灵活控制波束扫描。对于单元数量较多的超表面天线,分析单元间耦合较为复杂。为此,本文提出一种基于仿真误差进行修正的方法,实现波束指向角度的精确控制。最终设计并仿真了一种由120个单元构成的一维阵列,在中心频率10?GHz下实现了覆盖80°(+40°～-40°)的波束扫描范围,峰值增益达14.3dBi,且在整个扫描范围内增益波动小于3?dB。更多还原

【Abstract】 A holographic beam-scanning antenna fed by a substrate integrated coaxial line(SICL) is proposed,featuring low profile,low loss,and ease of integration.Ring-shaped slot elements etched on the top metallic layer enhance radiation efficiency,while a holographic design approach enables flexible beam control through the "on/off" states of the slots.To address the complexity of mutual coupling in large-element metasurfaces,a simulation error–based correction method is introduced for accurate beam pointing.A 120-element one-dimensional array is designed and simulated,achieving an 80°scanning range(-40° to +40°) at 10 GHz with a peak gain of 14.3 dBi and less than 3 dB variation across the entire range.更多还原