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Asynchronously Controlled Frequency Locked Loop
2016 22nd IEEE International Symposium on Asynchronous Circuits and Systems (ASYNC), 2016A frequency-locked loop (FLL) system typically employs synchronous digital counters to estimate the frequency discrepancy between the output of a local oscillator and an external reference clock. We present a novel FIFO-based frequency detector as an alternative to such counters.
Suwen Yang +2 more
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Frequency Locked Loop FM Demodulator
IEEE Transactions on Communication Technology, 1967A 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 Multiplier using Phase-Locked Loop
2020 IEEE 17th India Council International Conference (INDICON), 2020A Phase-Locked Loop (PLL) Frequency multiplier application is been presented in this paper. The designed PLL is a type-2, order-3 CPPLL with a tuning range of 143-176M Hz with the center frequency of 160M Hz and a loop bandwidth of 2M Hz. The functional blocks of the PLL Frequency multiplier include PFD, Charge Pump with a loop filter, a voltage ...
Harish G Shettar +5 more
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Frequency measurement using a frequency locked loop
2011 IEEE Energy Conversion Congress and Exposition, 2011A phase locked loop method is proposed for fast estimation of utility grid frequency, for control and protection purposes in grid-connected power converters. Using a second order generalized integrator (SOGI) and a ‘novel’ frequency locked loop (nFLL), which makes the SOGI frequency adaptive, the proposed SOGI-nFLL detects small and large step changes ...
Zijun Luo +3 more
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Distributed Frequency-Locked Loops for Wireless Networks
IEEE Transactions on Communications, 2011The establishment of a common frequency reference in a distributed wireless network is a critical factor in enabling any degree of node cooperation in communication and sensing functions. In this paper we introduce Distributed Frequency-Locked Loops (D-FLL's) to control the carrier frequencies of autonomous nodes with wireless communication ...
VARANESE, NICOLA +2 more
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A reconfigurable high-frequency phase-locked loop
Proceedings of the 20th IEEE Instrumentation Technology Conference (Cat. No.03CH37412), 2004Reconfigurable phase-locked loops (PLLs) present the advantage of fast-frequency acquisition combined with narrow-noise bandwidth, since their parameters can be dynamically adjusted. High-frequency PLLs are generally implemented by means of analog circuits which are not easily reconfigured during operation.
F.R. de Sousa, B. Huyart
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Automatic NMR field-frequency lock—pulsed phase locked loop approach
Review of Scientific Instruments, 1978A self-contained deuterium frequency-field lock scheme for a high-resolution NMR spectrometer is described. It is based on phase locked loop techniques in which the free induction decay signal behaves as a voltage-controlled oscillator. By pulsing the spins at an offset frequency of a few hundred hertz and using a digital phase-frequency discriminator ...
S, Kan +4 more
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A 50 MHz phase- and frequency-locked loop
IEEE Journal of Solid-State Circuits, 1979A monolithic phase/frequency-locked loop has been developed for operation at up to 50 MHz. The loop combines wide capture range and narrow bandwidth, making it ideal for timing recovery in digital transmission systems. The 24-pin device features an electronically-tuned voltage-controlled LC oscillator and includes the input differentiation and full ...
R. Cordell +3 more
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IEEE Industrial Electronics Magazine, 2021
In the electrical power and energy (EPE) area, the traditional concept in designing the synchronization system of power converters is using the phase-locked loop (PLL) concept. An alternative way is using the frequency-locked loop (FLL) concept, which is also known as the adaptive notch filter, adaptive noise cancelation technique, gradient descent ...
Golestan, Saeed; id_orcid 0000-0002-8568-1612 +4 more
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In the electrical power and energy (EPE) area, the traditional concept in designing the synchronization system of power converters is using the phase-locked loop (PLL) concept. An alternative way is using the frequency-locked loop (FLL) concept, which is also known as the adaptive notch filter, adaptive noise cancelation technique, gradient descent ...
Golestan, Saeed; id_orcid 0000-0002-8568-1612 +4 more
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A Fractional Frequency Synthesizer Using Frequency Locked Loop
2007 14th IEEE International Conference on Electronics, Circuits and Systems, 2007This paper presents a new architecture for wideband fractional frequency synthesizer. The architecture is based on frequency locked loop (FLL). Fractional division is implemented in this FLL by using two feedback loops which are having different frequency division ratio N and N+1.
A.V. Rejeesh, P. Mandal
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