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引用次数: 30
摘要
本文分析了CMOS环形振荡器中一次谐波注入锁紧问题。在分析中，采用一种新的基于逆变器级传播延迟的分析方法证明了Adler方程。从相位噪声的角度讨论了锁注入环振子的特性，并推导了锁注入环振子相位噪声的封闭方程。根据在0.13 μ m CMOS工艺中实现的基于dll的倍频器的测量结果，理论预测与测量结果吻合较好
This paper presents an analysis of first-harmonic injection locking in CMOS ring oscillators. In this analysis, Adler's equation is proved by using a new analytical approach based on the propagation delay of an inverter stage. Also the behavior of the injection-locked ring oscillators from phase noise point of view is discussed and a closed-form equation for the phase noise of such oscillators is derived. According to the measurement results on a DLL-based frequency multiplier implemented in 0.13-mum CMOS process, good agreement between theoretical prediction and measurements is observed
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