Results 161 to 170 of about 6,749 (208)

Period Jitter of Frequency-Locked Loops

IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2015
This paper presents a spectral analysis of period jitter of frequency-locked loops (FLLs). It is shown that the period jitter of the output clock of the FLL due to stationary noise sources is cyclostationary. It is further shown that the FLL behaves as a time variant loop and there is translation of jitter frequency at the output.
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CMOS phase-locked loops for frequency synthesis

2010 IEEE International Solid-State Circuits Conference - (ISSCC), 2010
As wireless communication systems evolve toward higher frequencies, higher bandwidths, and multi-standard capabilities, the performance of their phase-locked loops (PLLs) becomes increasingly critical to overall system performance. Additionally, PLLs often must be integrated with large digital blocks, so there is strong and increasing economic pressure
Ian Galton, Behzad Razavi, John Cowles, Peter R. Kinget   +3 more
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On Frequency Sweeping in Phase-Locked Loops

IEEE Transactions on Communications, 1984
The following experimental study describes a new representation of the behavior that a second-order phase-locked loop (PLL) shows in the presence of linear frequency sweeping. This paper differs from previously published results in that it presents a general experimental analysis of the PLL during a sweep which is independent of a specific in-lock ...
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Phase-Locked Loop Pull-In Frequency

IEEE Transactions on Communications, 1974
A computerized procedure for obtaining the pull-in frequency of a phase-locked loop is described. The procedure, which consists of solving for the limit cycle of the out-of-lock loop and finding the frequency offset below which no solution exists, is quite general with respect to phase detector function and loop filter.
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A global frequency estimator based on a frequency-locked-loop filter

2016 American Control Conference (ACC), 2016
In this paper, a novel frequency estimator is proposed with global convergence properties, i.e. the frequency estimate asymptotically converges, under the assumptions of an averaging approach, from any initial condition to the actual one. The estimator makes use of an adaptive notch filter coupled with an adaptation mechanism guaranteeing the ...
FEDELE, Giuseppe, Ferrise A, D'Aquila G.
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Frequency Locked Loop FM Demodulator

IEEE Transactions on Communication Technology, 1967
A new type of FM demodulator, the Frequency Locked Loop (FLL) is presented. The concept employed in this class of circuits is shown to be applicable in two forms. The first form is realized at the carrier, or IF frequency, to provide an FM detector that has the properties of not requiring a limiter preceding it and also of having a threshold superior ...
K. Clarke, D. Hess
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Frequency Response of Phase Locked Loops

IEEE Transactions on Broadcast and Television Receivers, 1971
This paper is concerned with the design of the phase locked loop (PLL) to be used as an FM demodulator. With the introduction of the PLL IC and the trend of designing inductorless circuits, there has been much interest in the PLL FM demodulator.1'2 The discussion in this paper concentrates on the steady state response of the PLL to sinusoidally ...
Richard Bernstein, Andreg. Vacroux
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Frequency and Phase Lock Loop

IEEE Transactions on Consumer Electronics, 1977
A new electronic subsystem has been developed: The frequency and phase lock loop. It has an extended acquisition range compared to the standard phase lock loop. It will be advantageous to use this new loop in all applications where a simultaneous need for large acquisition range and a narrow tracking bandwidth can justify the added complexity of the ...
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Stability of Frequency Locked Loops

1989
Passive frequency standards are characterized by the use of a reference resonance to stabilize the frequency of an external probe oscillator. A common configuration is shown in Fig. 1 [1–6]. The probe oscillator generally has phase modulation imposed on the carrier in order to interrogate the resonance with a minimum of offset.
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Switched-loop filter for automatically frequency-calibrated phase-locked loops

Microelectronics Journal, 2013
A novel switched-loop filter, which can significantly reduce ripples on voltage controlled oscillator (VCO) control line, is proposed for phase-locked loops (PLL) with an automatic frequency calibration technique. Complementary bootstrapped transmission gates are utilized and rearranged clocks are generated to improve the performance of loop filter ...
Yan Han, Dongdong Zhong, Xiaoxia Han, Xiao Liang, Weiwei Yang, Qian Zhou   +5 more
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