一种新型亚毫米波反射面天线设计  

A Novel Design of Submillimeter Reflector Design

作　　者：袁诚 赵凤军[1] 王楠[1] 吴亮 YUAN Cheng;ZHAO Feng-jun;WANG Nan;WU Liang(Uinversity of Chinese Academy of Science,Beijing 100190,China;Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院电子学研究所,北京100190 [2]中国科学院大学,北京100049

出　　处：《计算机仿真》2020年第8期130-135,共6页Computer Simulation

摘　　要：针对空对地或者地对空等方位搜索天线需要在方位向提供窄波束,而在距离向需要扇形波束的问题,结合杂草优化等生物算法,设计并仿真了W波段阵列喇叭馈源反射面天线。上述天线主要应用于机场跑道的异物检测,其馈源采用正交耦合模喇叭单元实现圆极化发射并且采用幅度加权的方法实现了距离向的赋形波束。仿真表明,反射面能够实现95GHz为中心频率的5GHz带宽范围内的方位向窄波束,同时其能量能够集中在半平面内,符合实际工程需求,论证了设计的可行性,能够实际加工。For the air-to-ground or ground-to-air azimuth search antenna,it is necessary to provide a pencil-beam in the azimuth direction and a fan-beam in the elevation direction.Combined with the biological algorithm such as invasive-weed optimization,the W-band array horn feed reflector-antenna was designed and simulated.The antenna is mainly applied to the foreign object detection of the airport runway.The orthogonal-mode transducer(OMT)unit was adopted with the feed to realize the circularly polarized emission,and the amplitude-weighted method was used to realize the shaped beam of the elevation direction.Simulation experiments show that the reflector-antenna can achieve azimuth pencil-beam in the 5GHz bandwidth with 95GHz as the center frequency,and its energy can be concentrated in the half plane,which meets the actual engineering requirements.The feasibility of the design was demonstrated and it is capable of processing.

关 键 词：毫米波天线 阵列馈源 优化算法 反射面天线 正交耦合模 

分 类 号：TN955[电子电信—信号与信息处理]