Frequency quantization in first-order digital phase-locked loops with frequency-modulated input

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Title: Frequency quantization in first-order digital phase-locked loops with frequency-modulated input
Authors: Tertinek, Stefan
Teplinsky, Alexey
Feely, Orla
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Date: Dec-2007
Abstract: Frequency granularity in a digital phase-locked loop arises from quantization in the number-controlled oscillator which prevents the loop from locking exactly onto its reference signal and introduces unwanted phase jitter. Based on a nonlinear analysis of trajectories in the phase space, we have recently investigated the effect of frequency quantization in a first-order loop with a frequency-modulated input signal and have derived useful bounds on the steady-state phase jitter excursion. In this paper, we continue that work and derive the maximum modulation amplitude such that loop cycle slipping is avoided. We also examine in detail the loop behavior in acquiring phase-lock.
Funding Details: Science Foundation Ireland
Type of material: Conference Publication
Keywords: Phase-locked loopsQuantizationPhase jitter
Subject LCSH: Phase-locked loops
Frequencies of oscillating systems
Language: en
Status of Item: Peer reviewed
Conference Details: Presented at the International Workshop on Nonlinear Maps and their Applications (NOMA '07), INSA, Toulouse, December 13-14, 2007
Appears in Collections:Electrical and Electronic Engineering Research Collection

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