一种星载V频段接收机的设计

Design of V band receiver for space application

随着高通量通信卫星系统发展,为了获得更多的频率资源,系统工作频段开始向频率资源丰富的Q/V频段过渡。为了满足通信卫星系统对微波接收机向V频段的发展应用需求。文章给出了一种星载V频段接收机的设计和工程实现方法。设计基于多芯片组件技术,通过对毫米波频段电路的精确仿真,将多种功能芯片封装在同一射频管壳中,实现了设备的高集成度;通过对毫米波频段星载接收机的稳定性设计、宽带互联设计等整机集成设计技术的研究,实现了设备的高稳定性;首次使用基于MHEMT低噪声工艺的微波单片集成电路芯片(MMIC)使得设备具备低噪声特性。研制的V频段接收机的工作带宽达到2.5 GHz,是现有通信卫星载荷中带宽最宽的接收机,噪声系数小于3.5 dB,满足系统使用要求。该V频段接收机是Q/V馈电载荷的关键设备,实现了对未来高通量通信卫星重要的技术储备,可广泛应用于各类通信卫星系统。

With the development of HTS communication satellites,the system operating frequency band has begun to transiton to the Q/V band with abundant frequency resources.In order to meet the development and application requirement of communication satellite systems for V-band microwave receivers.Design and engnieering application method of V band receiver for space application has been disccused.The design is based on MCM technology,through the accurate simulation of the millimeter circuits,multiple functional chips are packaged in the same RF tube,which achieves a high degree of integration of the device.High stability of the receiver is achieved through research on the integrated design technology of millimeter receivers and broadband interconnecting matching.The MHEMT low noise MMIC has been used to achieve low noise characteristics.The V-band receiver has a working bandwidth of 2.5 GHz,which is the widest receiver in the current communication satellite subdivision.The noise figure is less than 3.5 dB,which meets the system requirements.V band receiver which has been considered to be the technology of future high throughout satellite is the critical device of Q/V feeder link,can be widely uesed in various communication satellite systems.