关键词: 宽带数字接收机, 射频前端电路, 无线电频谱管理

Abstract:

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.

Key words: wideband digital receiver;RF front-end circuit;radio spectrum management