宽带数字下变频和重采样处理Matlab仿真与FPGA实现

摘要

宽带数字下变频（DDC）和重采样处理可应用于成像雷达和电子对抗宽带侦查等领域的新型宽带数字接收机设计中，讨论了基于多相滤波结构的宽带DDC和重采样滤波处理的高效实现方式，并通过一个设计实例进行Matlab仿真和FPGA实现，给出了仿真和实现结果，该方法可应用于当前新型宽带数字接收机宽带数字解调设计。%Broadband digital down⁃converter(DDC)and resample processing can be applied in the design of new wideband digital receiver in the fields of imaging radar and broadband reconnaissance in electronic countermeasure. The efficient realiza⁃tion way of resample filtering processing and broadband DDC based on polyphase filtering structure are discussed in this paper. A design instance is adopted to perform Matlab simulation and FPGA implementation. The simulation and implementation results are provided. This method can be used in the design of broadband digital demodulation of the new broadband digital receiver.