| 摘要: |
| 龙伯透镜天线是一种折射率渐变的透镜天线，可将特定频率的入射波汇聚到透镜表面的某点或将电磁波沿原方向反射，能够实现波束扫描和多波束聚焦，已用于电子对抗、第五代移动通信技术、卫星通信以及军用战机和舰艇。介绍了龙伯透镜天线的基础理论，归纳梳理了球形龙伯透镜天线和变形龙伯透镜天线，总结了三种制备技术，对比了不同类型的透镜天线性能，并分析了馈源对龙伯透镜性能的影响，最后对龙伯透镜天线的发展提出建议。 |
| 关键词: 龙伯透镜天线 几何光学 变换光学 波束扫描 多波束 |
| DOI： |
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| 基金项目:国家自然科学基金资助项目(61771490)；陕西省自然科学基金项目(2018JM6055) |
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| Luneburg lens antennas: theory and research progress |
| ZANG Yadan,ZHU Yongzhong,SONG Xiaoou,CHEN Junfeng |
| (School of Information Engineering,
Engineering University of PAP，Xian 710086，China;School of Equipment Support and Management,
Engineering University of PAP，Xian 710086，China) |
| Abstract: |
| Luneburg lens antenna is a kind of lens antenna with sequential refractive index,which can converge the incident wave of a specific frequency to a point on the surface of the lens or reflect the electromagnetic wave in the original direction.It can realize beam scanning and multi-beam focusing,and has been applied in electronic countermeasures,5G mobile networks,satellite communications and military aircrafts and ships.This paper introduces the basic theory of Luneburg lens antenna,summarizes spherical Luneburg lens antenna and deformed Luneburg lens antenna,concludes three preparation techniques,compares performances of different types of Luneburg lens antenna,analyzes the influence of feed on the performance of Luneburg lens antenna,and finally gives some suggestions for the development of Luneburg lens antennas. |
| Key words: Luneburg lens antenna geometric optics transformation optics beam scanning multi-beam |
