基于北斗卫星通信的射频收发系统设计

Design of Radio Frequency Transceiver System Based on Beidou Satellite Communication

我国海上的导航、定位、电台、勘探等应用和业务都与北斗卫星密切相关,但由于海上气候条件恶劣,海面的不平坦性以及特殊的地理和电磁特性等原因,会对北斗卫星的信号产生严重的影响。本文设计了一款轻量化、低功耗、高性能的多频段射频前端系统。该设备由1615MHz、2004MHz两路发射和1575MHz、1176MHz两路接收单元组成。在放大功率、隔离度等各项设计参数满足指标的同时,还具备输出功率可调、功率放大器开关可控、驻波比告警等功能。设备位于天线与终端设备之间,实现基于北斗卫星系统的海上通信,提供稳定可靠的通信链路。

Beidou satellite is closely related to navigation,positioning,radio,exploration and other applications and operations on the sea in China.However,due to the harsh sea climate,the irregularity of the sea surface,and the special geographic and electromagnetic characteristics,the signals of Beidou satellite will be seriously affected.This paper designs a lightweight,low power consumption,high performance multi-band RF front-end system.The device consists of 1615MHz,2004MHz two-channel transmitter and 1575MHz,1176MHz two-channel receiver.While the design parameters such as amplification power and isolation meet the criteria,it also has functions such as adjustable output power,controllable power amplifier switch,standing wave ratio warning and so on.The equipment is located between the antenna and the terminal equipment,which enables the Beidou satellite system-based maritime communication and provides a stable and reliable communication link.