A companion analysis of clock jitter and phase noise of single-ended and differential ring oscillators is presented. The impulse sensitivity functions are used to derive expressions for the jitter and phase noise of ring oscillators. The effect of the number of stages, power dissipation, frequency of oscillation, and shortchannel effects on the jitter and phase noise of ring oscillators is anal...

The effect of filter parameters on the phase noise of RF MEMS tunable filters employing shunt capacitive switches is investigated in this article. It is shown that the phase noise of a tunable filter is dependent on the input power, fractional bandwidth, filter order, resonator quality factor, and tuning state. Phase noise is higher for filters with smaller fractional bandwidth. In filters with...

Period Jitter Period jitter (JPER) is the time difference between a measured cycle period and the ideal cycle period. Due to its random nature, this jitter can be measured peak-to-peak or by Root of Mean Square (RMS). We begin by defining the clock rising-edge crossing point at the threshold VTH as TPER(n), where n is the time domain index, as shown in Figure 1. Mathematically, we can describe ...

Abs t rac t . A unifying view on several astonishing effects induced by state dependent, uncorrelated fluctuations (multipficative white noise) is presented. The main emphasis of our introductory discussion is put on the basic physical mechanisms at work in a white noise driven "pulsating ratchet", noise-induced non-equilibrium phase transitions, and their synthesis in the form of coupled Brown...

Multicarrier modulation exhibits a significant sensitivity to the phase noise of the oscillator used for frequency down-conversion at the portable receiver. For this reason, it is important to evaluate the impact of the phase noise on the system performance. In this letter we present an accurate method to determine the error probability of an orthogonal frequencydivision multiplexing (OFDM) sys...

Understanding noise in submicron MOS devices is an ongoing challenge in the area of mixedsignal modeling. Experimental observations show that the classical long-channel MOSFET noise formulation underestimates the drain current noise of short-channel devices by a factor often referred to as the excess noise factor. The numerical value of this factor is still a matter of controversy, raising ques...

This paper presents a new point of view of oscillator noise, bringing transparent insight into the phase noise. This work bridges fundamental physics of noise and existing oscillator phase noise theories and reveals the direct correspondence of phase noise and the Einstein relation. The concept of virtual damping is presented utilizing an ensemble of oscillators as a measure of phase noise. The...