在简要介绍了动态锁区形成原理后 ,通过对 RL G基本输入输出关系的推导得出了动态锁区的宽度表达式。基于减小动态锁区影响的目的 ,建立了相应的优化模型。优化结果表明 :适当增大抖动深度对减小动态锁区的影响是必要的 ,但当抖动深度增大到一定程度后 ,再增大抖动深度对减小动态锁区没有明显的效果 ,而根据优化结果进行局部调整却可能得到很好的偏频效果。 After a brief introduction of the principle of dynamic lock formation, the width expression of dynamic lock is obtained by deducing the basic input and output relations of RL G. Based on the purpose of reducing the influence of dynamic lock area, a corresponding optimization model is established. The optimization results show that it is necessary to increase the depth of dither properly to reduce the influence of dynamic lock area. However, when the depth of dither is increased to a certain extent, increasing the depth of dither will have no obvious effect on reducing the dynamic lock area. Local tuning of the optimization result may result in a good frequency offset effect.