This paper introduces an improved direct digital frequency synthesis(DDFS) realization method based on CORDIC arithmetic,applying CORDIC arithmetic to substitute large SIN ROM to export fine frequency resolution.

• 提出了一种基于CORDIC算法的改进直接数字频率合成(DDFS)的实现方法,应用CORDIC算法替代了庞大的传统正弦函数ROM,输出高质量的信号。