我国C波段大容量通信卫星天线分系统电设计

本文从C波段大容量通信卫星天线分系统的设计边界条件出发,给出可以兼顾卫星在两个不同定点位置时天线波束覆盖图设计原则,在设计中所遇到的问题的解决方法;特别着重讨论了波束形成网络中的问题。最后对我国第二个定点位置上通信卫星天线分系统进行优化设计,预测了第二颗星可能达到的指标。

ELECTRICAL DESIGN OF ANTENNA SUBSYSTEM OF CHINESE C BAND COMMUNICATIONS SATELLITE WITH LARGE CAPACITY

A design concept for the shaped beam antenna used in the next generation of the chinese communications satellite is given in this paper. Starting from the system requirements and boundary conditions,a method to design the antenna contour pattern,which is able to match both shapes of two service zones,in relation to two different satellite positions on orbit, is described.The problems which will arise in design,and their solutions, especially the problems about the beam forming network are presented. Finally,the optimization of the antenna substsyem of the satellite on the second orbit position has been carried out,and its performance is also pre- sented.