Hardware Implementation of Sine Wave Generator using CORDIC Algorithm

This paper describes a hardware realization of Sine wave generator using CORDIC algorithm. A complex oscillator based on the unfolded CORDIC algorithm has been implemented, which produces periodic sine and cosine samples for any specified angle increment. Where the frequency accuracy is achieved by residual angle correction unit and stability is achieved using AGC unit, also phase jitter is avoided by rotating the X and Y registers directly. This complex oscillator has been implemented in FPGA and the sine output of this oscillator was given to the Digital to Analog converter (DAC) to verify the functionality of this oscillator. The analog output was fed to the Digital Storage Oscilloscope (DSO) and the Sine wave output was verified for variation in angle, angle correction and gain correction. The Sine / Cosine samples and the Fourier analysis of the output in MATLAB have been studied. Finally the results from DSO and MATLAB have been verified and compared. The simulation and Synthesis results in FPGA have been presented.