一、引言由振荡器产生的信号,其频率和相位受确定性和随机性现象所扰动,这些现象有不同的根源,或者是在振荡器的元器件中,或者是在振荡器的外界环境中,在第一种场合下,扰动是来自电路和谐振器内部的噪声源。第二种场合相当于周围介质的影响,即是温度、加速度、力等。按照振荡器中噪声源的位置和性质不同,输出信号的特性通过不同的途径受到影响。这种影响将使相位与频率噪声谱或稳定度曲线呈现不同的形状,或者使双对数坐标 I. INTRODUCTION The signal generated by the oscillator, whose frequency and phase are disturbed by deterministic and random phenomena, have different origins, either in the oscillator components or in the oscillator external environment In the first case, the disturbance is from a source of noise inside the circuit and the resonator. The second situation is equivalent to the impact of the surrounding medium, that is, temperature, acceleration, force and so on. Depending on the location and nature of the noise source in the oscillator, the characteristics of the output signal are affected in different ways. This effect will render the phase and frequency noise spectrum or stability curves differently shaped or have double logarithmic coordinates