用于遥感卫星数传的新型波导阵列组合天线

A new type of waveguide array composite antenna used for data transmission of remote sensing satellites

从新的设计理念出发,提出一种新型的波导十字阵列组合辐射天线替代了赋形反射面天线,用于低轨遥感卫星的数传系统。文中论述了该天线的设计思路、设计过程,并列出了天线的主要性能。最后还简述了该天线在国内卫星上的应用及我国未来低轨遥感卫星数传天线的发展趋势。该天线已在我国多个卫星上成功应用。这种波导阵列组合天线结构紧凑、尺寸小,具有与国外通用的赋形反射面天线基本类似的性能,可达到星载数传天线的预定要求,而且为星载遥感器及其他载荷留出了更大的对地安装空间。

Proceed from A new design-ideal a type of composite antenna of waveguide cross-slot array is proposed and used as data transmission antenna on remote sensing satellites at low earth orbit,instead of the shaped reflector.The design of the composite antenna and its performance have been described in this paper.The antenna possesses similar performance to the shaped reflector,and it has been used successfully in data transmission subsystem on quite a few of Chinese satellites.The outstanding advantage is to leaves more space on the plane toward the earth for other remote sensing devices due to its compact structure and small size. Lastly,the application of the antenna and development trend of data transmission antennas on low earth orbital satellites (LEO)in China have been briefly presented.