基于薄膜铌酸锂的微波光子雷达芯片  

Microwave Photonic Radar Chip Based on Thin-film Lithium Niobate

作　　者：李明[1] 袁德哲 李思敏 潘时龙[1] LI Ming;YUAN Dezhe;LI Simin;PAN Shilong(National Key Laboratory of Microwave Photonics,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,Jiangsu,China)

机构地区：[1]南京航空航天大学微波光子技术国家级重点实验室,江苏南京210016

出　　处：《上海航天（中英文）》2024年第3期143-149,共7页Aerospace Shanghai（Chinese&English）

基　　金：国家重点研发计划(2022YFB2802704)。

摘　　要：微波光子雷达拥有分辨率高、处理速度快、同时多波段、多功能等优势,在航天系统中具有广阔的应用前景。为了满足航天应用对雷达系统体积、质量和功耗的严格要求,集成化已经成为微波光子雷达的重要发展方向。介绍了一款基于薄膜铌酸锂的微波光子雷达芯片,利用该芯片实现了雷达发射信号倍频产生和回波信号去斜接收,并对距离天线不同位置的目标进行了测距实验,得到的测量距离与实际距离基本相同,两者之间的误差小于4 mm。Microwave photonic radar has the advantages such as high resolution,rapid processing speed,multiband capability,and multifunctionality,and has broad prospects in aerospace applications.In order to meet the stringent requirements of the size,weight,and power consumption of radar systems in aerospace applications,integration has become the main trend in the development of microwave photonic radar.In this paper,a microwave photonic radar chip fabricated on a thin-film lithium niobate platform is introduced.This chip facilitates the generation of frequencymultiplied radar signals and the de-chirped of received echo signals.Furthermore,the range-finding experiments involving targets positioned at varying distances from the antenna are carried out.The results show that the measured distances are consistent with the actual distances,and the error margins are less than 4 mm.

关 键 词：微波光子雷达 薄膜铌酸锂 集成微波光子技术 电光调制器 芯片 

分 类 号：TN959.74[电子电信—信号与信息处理]