介绍在FPGA 器件上如何实现单通道数字下变频（DDC）系统。利用编写VHDL 程序和调用部分IP 核相结合的方法研究了数字下变频的FPGA 实现方法,并且完成了其主要模块的仿真和调试,并进行初步系统级验证。-Introduced in the FPGA device on how to achieve the single-channel digital down conversion (DDC) system. VHDL procedures and the use of the preparation of some call a combination of IP core method of the FPGA digital down conversion method, and completed its main modules of simulation and debugging, and initial system-level verification.