Jitter and phase noise properties of phase-locked loops (PLL) are analyzed, identifying various forms of jitter and phase noise in PLLs. The effects of different building blocks on the jitter and phase noise performance of PLLs are demonstrated through a parallel analytical and graphical treatment of noise evolution in the phaselocked loop.

The performance of a modular multilevel converter (MMC) is highly related to the three-phase phase-locked loop (PLL). presence DC component, harmonic and negative sequence component results in poor dynamic steady-state PLL, such as fundamental frequency oscillations phase estimated by PLL. In order suppress influence parameters variation disturbance grid voltage, an improved PLL with moving ave...

Phase noise (PN) in phase locked loop (PLL) system is an important parameter in communication system. It degrades the system performance by increasing bit error rate (BER). The PLL concept was first appeared in the papers by Appleton in 1923 and de Bellescize in 1932 [1]. It is essentially a control system which employs feedback mechanism to synchronize the phase of output signal with the phase...

In this paper, we propose a speedup method of frequency switching time in the phase locked loop (PLL) frequency synthesizer using the target frequency detector (TFD). The TFD detects the time Ta for any channels where the output of the PLL frequency synthesizer reaches the target frequency for the first time. At Ta, the programmable divider, the reference divider and the phase comparator are re...

An effective technique for extracting an audio input from a composite signal that contains a nonstationary noise-corrupted periodic disturbance is presented. The proposed technique cancels the periodic disturbance using a synthesized signal whose parameters are adjusted adaptively. A combination of a generalized phase-locked loop (PLL) and an adaptive least mean square (LMS) method is used. The...

In this article, we develop the theory of a special type optoelectronic phase-locked loop (PLL). The output signal PLL is in electrical domain and its reference oscillator, typically mode-locked laser, operates optical domain. uses balanced microwave phase detector (BOMPD). order to model PLL, nonlinear characteristic function gain BOMPD are derived analytically. Using results analysis, an usin...

Phase Locked Loop (PLL) is a fundamental part of radio, wireless and telecommunication technology. The goal of this document is to review the theory, design and analysis of PLL circuits. PLL is a simple negative feedback architecture that allows economic multiplication of crystal frequencies by large variable numbers. By studying the loop components and their reaction to various noise sources, ...

A low power, adaptive bandwidth tracking Phase Locked Loop (PLL) is presented in this paper. Designed PLL operates over a wide frequency range of 250MHz to 1GHz with a fixed multiplication factor of 8. PLL is optimized for 0.2% UI of r.m.s. jitter over the whole frequency range with bandwidth tracking to keep the power consumption minimum. In addition, a multiplier block is used to increase the...

This work presents a method for modeling and simulating a second-order analog phase-locked loops (PLL) in time domain for studying its acquisition behavior. The proposed method uses phase error process for analyzing the PLL characteristics. The method enables to study the lockin and pull-in phenomena of analog PLL and the effects of changing phase offset and voltage offset values on acquisition...

The controls of most power electronic inverters connected to an electrical system (EPS) rely on the precise determination voltage magnitude, frequency, and phase angle at point common coupling. One widely used approaches for measuring these quantities is phase-locked loop (PLL); however, precision this measurement affected during transients in EPS a function type event architecture PLL. PLLs ba...