摘要
多波束微波天线因其在通信系统中的广泛应用而备受关注。提出了一种多波束透镜-天线系统,可同时满足宽带宽和宽扫描角度要求。透镜由增材制造的球形层构成,以实现折射率梯度变化。设计了不同工作频率的柔性贴片天线作为透镜的馈电端,柔性馈源与球形透镜表面可紧密贴合在一起,实现共焦平面。多频段馈源测试结果表明该透镜-天线系统可在2~10 GHz的带宽范围内工作。该透镜-天线系统在测试中发射指向-72°、-36°、0°、36°、72°的波束以进行验证,其在最大扫描角度附近增益损失小于3 dB,仿真结果和测试结果具有良好的一致性。研究结果表明该透镜-天线系统在微波和毫米波移动通信和遥感等领域具有广阔的应用前景。
Multi-beam microwave antennas have attracted enormous attention because of their wide application in communication systems.A multi-beam lens-antenna system was proposed to meet both the requirements of wide bandwidth and wide scanning angle.The lens consisted of additively manufactured spherical layers to achieve gradient change of refractive index.The flexible patch antennas with different operating frequencies were designed as the feed end of the lens.The flexible feed source and the surface of the spherical lens could be closely fitted together to achieve the confocal plane.The test results of the multi-band feed source show that the lensantenna system can operate in the bandwidth range of 2-10 GHz.The lens-antenna system transmits beams pointing at angles of-72°,-36°,0°,36°and 72°in the test for validation.The gain loss of the lens-antenna system is less than 3 dB near the maximum scanning angle.There is good agreement between simulation results and test results.The research results show that the lens-antenna system has broad application prospect in the fields of microwave and millimeter wave mobile communications,remote sensing and so on.
作者
李炫静
冯瑞
谭秋林
Li Xuanjing;Feng Rui;Tan Qiulin(Key Laboratory of Micro/Nano Devices and Systems,Ministry of Education,School of Instrument and Electronics,North University of China,Taiyuan 030051,China;State Key Laboratory of Dynamic Measurement Technology,School of Instrument and Electronics,North University of China,Taiyuan 030051,China)
出处
《微纳电子技术》
CAS
2024年第7期48-53,共6页
Micronanoelectronic Technology
基金
山西省重点研发计划(202102030201005)
山西省基础研究计划(202203021222070)。
关键词
多波束
柔性天线
超材料
透镜-天线系统
宽扫描角度
multi-beam
flexible antenna
metamaterial
lens-antenna system
wide scanning angle
作者简介
李炫静(1998-),女,山东临沂人,硕士研究生,研究方向为超材料天线、传感器;冯瑞(1993-),男,山西忻州人,博士,副教授,主要研究方向为超材料器件、超表面;通信作者:谭秋林(1979-),男,湖南衡阳人,博士,教授,博士生导师,主要从事超常规传感技术及仪器的研究。
