Design and Optimization of Digital Down Converter based on Pipeline
Cas Key · Yaogan jishu yu yingyong · 2014
Digital Down Converter(DDC)is an important part of the radar-receiver,and its function is to convert the frequency of the digital signal received to base-band.In this paper,main function is to complete the quadrature demodulation,filtering and the down sampling.The Actel FPGA chip based on Flash is chosen as the security and the resource concern.A new method based on pipeline technology,simplified quadrature demodulation and distributed filter arithmetic is used to implement the DDC module.