一种基于射线寻迹法的星载四口径多波束天线设计  

Tittle Design of a Four-aperture Multi-beam Antenna in Satellite basedonRay tracing Method

作　　者：闫东坡 丁伟[1] 叶文熙 Yan Dongpo;Ding Wei;Ye Wenxi(Academy of Space Electronic Information Technology,Xi'an,710100)

机构地区：[1]中国空间技术研究院西安分院,西安710100

出　　处：《测控与通信》2023年第3期30-33,共4页

摘　　要：本文提出了1种基于射线寻迹法的星载四口径多波束天线设计。根据技术要求,优化综合出反射面结构参数、馈源口径尺寸,并采用射线寻迹法计算得到馈源阵列的最优布局,通过调整馈源的指向角,使所有馈源均指向反射面中心,最终利用仿真软件TICRATools19.0进行多波束天线的仿真分析。相比无射线寻迹法的结果,多波束覆盖区EOC增益均大于42dBi,天线波束增益提高了0.1~3dBi,平均增益提高了0.55 dBi,多波束天线系统整体增益得到提高。This paper presents a design of a four-aperture multibeam antenna used in communication satellite based on rays-tracing method.The parameters of the antenna and the size of the feed aperture are optimized in detail.The optimal layout of the feed array is found using the rays-tracing method,and the feed point is adjusted to ensure that all feeds point to the center of the reflector.The antenna is designed by TICRA Tools 19.0.Compared with the results without the ray tracing method,the antenna beam gain is increased by O.1dBi to 3dBi,with an average gain increase of 0.55dBi.The EOC is greater than 42dBi,and the overall performance of the multibeam antenna system is improved.

关 键 词：四口径多波束天线 射线寻迹 馈源指向 交叠增益 

分 类 号：TN8[电子电信—信息与通信工程]