线性调频信号运用dds中改变k来实现信号调频的策略-Linear FM signal to change the use of k dds FM' s strategy to achieve signal

基于DDS原理，利用VHDL语言进行正弦波、三角波、锯齿波、矩形波等波形的发生。包括完整代码和QUARTUS II工程。-Based on DDS principle, the use of VHDL, sine, triangle, sawtooth, square wave waveform occurs. Including the complete code and QUARTUS II project.