宽带数字接收机性能指标的研究

Performance indexes of broadband digital receivers

宽带数字接收机主要由射频链路和ADC组成,其中射频链路与ADC的接口匹配设计影响到整个宽带数字接收机的性能指标。本文首先介绍了射频链路和ADC性能指标,接着讨论了这两部分电路匹配条件并进行了相关推导,给出仿真结果。推导和结果给出了数字接收机中增益、灵敏度、瞬时动态范围指标在整机中的优化设计依据。

The broadband digital receiver mainly consists of the RF link and the ADC. The interface matching design of the RF link and the ADC affects the performance indexes of the overall broadband digital receiver. Firstly,the performance indexes of the RF link and the ADC are introduced. Secondly,the circuit matching conditions of the two parts are discussed and the relevant derivation is carried out. Finally,the simulation results are given. The optimal design basis of the gain,sensitivity,and instantaneous dynamic range in the overall digital receiver is given from the derivation and results.