宽带数字接收机射频前端电路设计

Design of Wideband Digital Receiver RF Front-end Circuits

宽带数字接收机在无线电频谱管理领域内具有重要的应用,其中射频前端电路指标对整机设备性能的影响显著。文中介绍了一种射频前端电路通用的设计方案,重点分析了各射频器件性能指标对接收机链路的影响,以及对无线电监测与测向结果的影响。最终提出了改进电路拓扑结构设计的措施与办法,并给出了基于该设计思路的具体工程应用实例,取得了良好的应用效果。

Wideband digital receiver has very important applications in the field of radio spectrum management,in which the RF front-end circuit parameters has significant effect on the device performance. This paper introduces a universal scheme of RF front-end circuit with focuses on the analysis of the RF components performance and its influence on the RF receiver chain and on radio monitoring and direction finding results. Finally,some corresponding measures and methods are proposed for improving circuit topology structure,and examples of engineering application are given based on the design idea,which has a good application effect.