1.引言影响窄带锁相装置设计的因素之一,是压控振荡器输出信号所固有的相位噪声。这种以随机抖动、漂移等形式出现的噪声,有时又称之为“振荡器不稳定性”。但从振荡器的含意来说,所谓“不稳定性”,通常是指频率漂移,而从锁相环理论的关系量来说,则是指相位漂移。 1. INTRODUCTION One of the factors that influence the design of a narrowband phase-locked device is the phase noise inherent in the voltage-controlled oscillator output signal. This kind of noise, which appears in the form of random jitter, drift, etc., is sometimes referred to as “oscillator instability.” However, the meaning of the oscillator, the so-called “instability”, usually refers to the frequency drift, and the relationship between the amount of phase-locked loop theory, it refers to the phase shift.