Design of DDS Signal Generator Based on FPGA

This paper simple presented the theory of DDS technique and how it work. It is designed and implemented by using VHDL hardware description language as design input and the Altera' s Cyclone chip as carrier. It provide different kinds of normal wave- form such as sine wave , square wave, pyramidal wave and so on. The frequency and phase of output signal are adjustable. It has been designed and analyzed in QuartusII software.