JitterRMS=2∫f0f110L(f)10df2πfc 以原文中这个计算结果,一步一步实现: Step1:求每个区域的积分 如上图Phase Noise和Offset Frequency的示意图,先求几个区域的PhaseNoise积分,纵轴的PhaseNoise是对数单位,积分PhaseNoise要用功率单位,如下: A1 = \int_{f0}^{f1}10^{\frac{L(f)}{10}}df 这里的关键...
Phase Noise与RMS Jitter之间可以通过以下公式进行换算: Phase Noise (dBc/Hz) = 20 * log10(Integrated Phase Noise / Carrier Frequency) 其中,Carrier Frequency表示信号的载波频率,单位为Hz。 换算公式举例 假设有一个信号,其Carrier Frequency为1 GHz(即1e9 Hz),Integrated Phase Noise为1e-12 rad^2/Hz,...
振荡器的抖动Jitter和相位噪声Phase Noise关系 在电子电路中,特别是涉及信号处理和通信的电路中,振荡器的稳定性和精度至关重要。影响振荡器性能的两个关键因素是抖动和相位噪声。 什么是抖动? 抖动是指信号周期事件的时间偏差。它本质上是信号周期时间相对于理想时间的变化。这种偏差会对电子系统的性能产生重大影响,尤其...
Jitter = Pn2Jitter(f, Lf, fc)Inputs: f: Frequency vector (phase noise break points), in Hz, row or column. Lf: Phase noise vector, in dBc/Hz, same dimensions, size(), as f. fc: Carrier frequency, in Hz, a scalar.Output: Jitter: RMS jitter, in seconds....
Phase noise and jitter modeling for fractional-N PLLsThe self biased Phase Locked Loop (PLL) has become a default choice for clock generation in many microprocessors. In today's scenario, the processor cores are made to operate at rapidly varying combinations of clock frequencies and very low ...
We have seen that oscillators are typically specified in terms of phase noise, but in order to relate phase noise to ADC performance, the phase noise must be converted into jitter. In order to make the graph relevant to modern ADC applications, the oscillator frequency (sampling frequency) is...
first calculated assuming long-channel noise On (+I) On (+I) Off (Equilibrium) A B On (-I) Off (Equilibrium) On State: ±I 1 / g do 1/ go (8 / 3)kTg do (?To ) Off State: 2 4kTg do 7.33kT = 2 NCf o2 vdd 25 Use jitter-phase-noise relationships to find phase noise....
Jitter expresses a drift from the ideal position of the clock edge occurring as the result of the fluctuation of the clock signal waveform in the direction of the time axis. Phase noise refers to the power spectrum density of phase fluctuation, providing
Converting Oscillator Phase Noise to Time Jitter 来自 ResearchGate 喜欢 0 阅读量: 165 作者: W Kester 摘要: A low aperture jitter specification of an ADC is critical to achieving high levels of signal-tonoise ratios (SNR). (See References 1, 2, and 3). ADCs are available with aperture...
Jitter and Phase Noise in Ring Oscillators noise is demonstrated. Several new design insights are given for low jitter/phase-noise design. Good agreement between theory and measurements is observed. B Razavi - Wiley-IEEE Press 被引量: 489发表: 2009年 Suppression of Clock-Jitter Noise and Laser...