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本文在推导出相位跟随反馈(Phase following feedback,可缩写成 PFFB)接收机等效线性模型的基础上,对载波环和侧音环之间的相互影响作了简要的讨论.分析表明,正确设计的 PFFB 接收机,在调制指数<1的情况下,两者之间的影响是很小的,通常可不予考虑.
Based on the derivation of the equivalent linear model of the phase following feedback (PFFB) receiver, this paper briefly discusses the interaction between the carrier ring and the sidetone ring.The analysis shows that the correct design Of the PFFB receiver modulation index <1 case, the impact between the two is very small, usually can not be considered.