The Design of DDS Digital Phase-Shift Sine Signal Generator

Based on direct digital synthesizer(DDS) and using field programmable gate array(FPGA),a digital phase-shift sine signal generator had been designed.This signal generator was verified through Altera Corporation′s DE2 develop board.In this design,a data flip-latch was added at the input side,the soft setting was employed instead of hard setting.At the same time,and the positive half period sampling was used instead of the full period sampling of sine wave in the ROM verification,,the scale of system and the demand to the systemic logic resources were reduced.At the end,the top layer circuit diagram of digital phase-shift sine signal generator was drawn,and the hardware circuit was simulated on the Quareus 6.0.