跳频频率合成器频率转换速度和频谱纯度的研究

Research on improving rate of frequency hopping and purity of frequency spectrum

将 DDS和 PL L这两种优缺点互补的技术结合在一起 ,优化设计了一种 DSP控制的 DDS+PL L跳频频率合成方案 ,采用了自适应精确预置技术 ,从而进一步缩短了环路锁定时间 。

The two synthesis techniques,DDS and PLL,are combined,and a hybrid hopping frequency synthesizer is implemented and the presetting technology of self adapting is given.Therefore the rate of locking and purity of frequency spectrum are improved.