On the basis of the introduction of STEL-1479 and PIC16C73A,The middle wave frequency synthesizer which is based on DDS and controlled by single chip is designed.

• 在介绍DDS芯片STEL-1479和PIC16C73A单片机的基础上,设计了一种利用单片机控制DDS芯片实现的中波频率合成器。