基于FPGA的中频数字接收器设计

文章在介绍了中频数字接收理论,即低通采样理论、带通采样理论的基础上,给出了中频带通采样结构。设计了一种基于FPGA的中频数字接收器,该中频数字接收器具有1GHz的采样速率,8bit的分辨率。软件功能全部在FPGA内部实现,包括了串并转换、数字混频、FIR滤波等功能模块。由于该设计采用了FPGA作为信号处理器,其设计灵活及可编程等特点使得该设计具有较强的通用性,适用于工程应用。

Design of intermediate frequency digital receiver based on FPGA

The intermediate frequency digital receiving principles including low-pass sampling principle,band-pass sampling principle,are introduced in detail and the structure based on intermediate frequency band-pass sampling is given.A kind of intermediate frequency digital receiver based on FPGA is designed.The intermediate frequency digital receiver based on FPGA has 1GHz sampling rare and 8bit resolution.All software functions are realized on FPGA,including series-parallel conversion,digital mixing and FIR filter module.The design has strong versatility suitable for engineering application according to the application of.FPGA,which has flexible design and programmable features.