Design of Direct Digital Frequency Synthesizer Based on FPGA

Combining the FPGA device with the DDS technology,the design scheme of the FPGA device is described in this paper.The FPGA device has the features of large in scale and design flexible,the method of implementing DDS system based on the FPGA device is analyzed,and the key technology is optimized,including pipeline structures of phase accumulator and the embed waveform memory of FPGA.The simulation experiment is completed using VHDL with the top-down design methods in Quartus II software.