基于场驱动的X波段龙勃透镜平面化设计研究  

Field-driven planarization design study of X-band Lombard lenses

作　　者：朱迁 张文杰 董永利 施建平[1] ZHU Qian;ZHANG Wenjie;DONG Yongli;SHI Jianpin(Nanjing Normal University,School of Electrical and Automation Engineering,Nanjing 210000,China)

机构地区：[1]南京师范大学电气与自动化工程学院,南京210000

出　　处：《空间电子技术》2024年第5期40-45,共6页Space Electronic Technology

基　　金：国家自然科学基金资助项目(编号:52005268)。

摘　　要：龙勃透镜天线因其多种优异属性,如多波束能力、宽角扫描、高增益等,是应用于雷达、卫星通信等电磁领域的重要器件。然而传统球形龙勃透镜因为体积、重量等问题大大限制了其在某些场景的应用。为了解决龙勃透镜的平面化、共形化等问题。文章提出并设计了一种用于X波段(8 GHz~12 GHz)应用的平面型龙勃透镜。利用超材料结构思想和场驱动设计技术实现了平面型龙勃透镜的介电常数梯度渐变和轻量化。采用12 dB增益喇叭天线对所设计的龙勃透镜进行仿真,在12 GHz的工作频率上获得高达14.1 dB的天线增益,与球形龙勃透镜相比,模型总体积减少了78%。此外,该平面型龙勃透镜模型,是基于有限元分析的透镜辐射分布电场驱动求解构建的,该方法可以为复杂结构透镜部件的开发及共形化设计提供创新思路。Lombard lens antennas have been widely used in radar,satellite communication and other fields due to its various excellent properties,such as multi-beam capability,wide angle scanning,high gain,and so on.However,the traditional spherical Lombard lens greatly limits its application in some scenarios due to its size and weight.In order to solve the problems of planarization and conformalization of Lombard lenses.In this paper,a planar Lombard lens for X-band(8 GHz~12 GHz)applications is proposed and designed.The gradient gradient of dielectric constant and light weight of planar Lombard lens are realized by using metamaterial structure idea and field-driven design technique.The designed Lombard lens is simulated using a 12 dB gain horn antenna,and an antenna gain of up to 14.1 dB at the 12 GHz is obtained,which reduces the total model volume by 78%compared with the spherical Lombard lens.In addition,the planar-type Lombard lens model,which is constructed based on the electric field-driven solution of the lens radiation distribution by finite element analysis,is a method that can provide an innovative idea for the development and conformal design of complex structural lens components.

关 键 词：场驱动设计 龙勃透镜 平面透镜 梯度结构 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TN827[电子电信—信息与通信工程]