伸缩式全金属反射阵列扫描天线  

Scalable all-metal reflective array beam scanning antenna

作　　者：赵旭浩 毕绍锋 张建德[2] 孙云飞 张强[2] 袁成卫[2] Zhao Xuhao;Bi Shaofeng;Zhang Jiande;Sun Yunfei;Zhang Qiang;Yuan Chengwei(Naval Research Institute,Shanghai 200040,China;College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]中国人民解放军海军研究院,上海200040 [2]国防科技大学前沿交叉学科学院高功率微波技术研究所,长沙410073

出　　处：《强激光与粒子束》2022年第4期61-66,共6页High Power Laser and Particle Beams

摘　　要：提出了一种伸缩式全金属反射单元,在此基础上设计了一个可用于高功率微波领域的全金属反射阵列波束扫描天线。通过反射单元的上下独立滑动,阵列中每个阵元所接收电磁波的传输路径可改变,从而实现了相控波束扫描。由电磁仿真可知,设计的反射单元能够在10~13 GHz的频带范围内实现0~360°的线性相位调节,且可在15°~40°偏馈条件下相位调节时保持高功率容量。由该型单元组成的中心工作频率为10 GHz的伸缩式全金属反射阵列扫描天线具备90°锥角范围内的二维波束扫描能力,功率容量可达5 GW/m2。同时,在波束扫描过程中,天线增益变化小于3 dB,副瓣电平低于-13 dB,最大口径效率为54.59%。A scalable all metal reflective element is proposed in this paper, and an all-metal reflective array antenna for high power microwave application is also designed. By sliding the connecting rod up and down, the transmission path of the incident wave to each element can be changed to achieve the corresponding phase modulation.Thus, the beam scanning can be achieved. Simulation result shows that the unit can realize linear phase adjustment of360° within 10-13 GHz and has a power handling capacity of 3 MW, which means the array can achieve 5 GW/m;power handling capacity level after the formation(under vacuum condition). Under the standard of 3 dB gain variation, the antenna can realize a two-dimensional spatial beam scanning within the range of 90° revolving cone angle.

关 键 词：波束扫描 阵列天线 相位调控 高功率微波 功率容量 

分 类 号：TN82[电子电信—信息与通信工程]