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Failure in Ring Oscillators With Capacitive Load
IEEE Transactions on Circuits and Systems I: Regular Papers, 2021Ring oscillators, with capacitive load intended for frequency tuning, can fail to sustain stable oscillations. Failure depends on the size of the load capacitors and their equivalent series resistance. This paper first describes the failing mechanism from an intuitive perspective.
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Control of multistability in ring circuits of oscillators
Biological Cybernetics, 1999The essential dynamics of some biological central pattern generators (CPGs) can be captured by a model consisting of N neurons connected in a ring. These circuits, like many oscillatory nonlinear circuits of sufficient complexity, are capable of multistability, that is, of generating different firing patterns distinguished by the phasic relationships ...
Carmen C. Canavier +3 more
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Analysis of resistive load ring oscillator
2015 IEEE 2nd International Conference on Recent Trends in Information Systems (ReTIS), 2015In this paper, a new equation for frequency of a ring oscillator are proposed. This method is general enough to be used in all types of ring oscillator delay stages. In this proposed technique we are able to calculate the ring oscillator frequency in absence of process parameters such as threshold voltage, GAMMA, THETA etc.
Saurav Mandal, Ashis Kumar Mal
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Design of bipolar RF ring oscillators
ICECS'99. Proceedings of ICECS '99. 6th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.99EX357), 2003This paper deals with RF ring oscillators in bipolar technology. Using a simplified approach based on a linear model, accurate design equations are provided for the main performance parameters such as the oscillation frequency, the oscillation amplitude, the quality factor, and the phase noise.
S. Finocchiaro +3 more
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A Novel Ring Oscillator PUF for FPGA Based on Feedforward Ring Oscillators
2022 19th International SoC Design Conference (ISOCC), 2022Tuan-Kiet Dang +3 more
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Josephson current oscillation in a Rashba ring
Journal of Physics: Condensed Matter, 2009We propose to use Rashba spin-orbital coupling (RSOC) to modulate the Josephson current in a one-dimensional ring-SQUID (superconducting quantum interference device) without any magnetic field or magnetic material. Supercurrent oscillation due to spin-dependent quantum interference of spin wavefunctions passing through the two arms of the ring in the ...
J, Wang, K S, Chan
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Design and Optimization of Multipath Ring Oscillators
IEEE Transactions on Circuits and Systems I: Regular Papers, 2011Multipath ring oscillators have been used to generate multiple clock phases and higher oscillation frequencies. This paper presents a modified linear analysis to find an accurate expression for the oscillation frequency and phase noise. The analysis shows that for the same power consumption, the number of phases can be increased without decreasing the ...
Amr Amin Hafez, Chih-Kong Ken Yang
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Jittering waves in rings of pulse oscillators
Physical Review E, 2016Rings of oscillators with delayed pulse coupling are studied analytically, numerically, and experimentally. The basic regimes observed in such rings are rotating waves with constant interspike intervals and phase lags between the neighbors. We show that these rotating waves may destabilize leading to the so-called jittering waves.
Vladimir, Klinshov +3 more
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2009
Jitter in ring oscillaton is theoretically described, and predictions are experimentally verified. A design procedure is developed in the context of time domain measures or oscillator Jitter in a plase-locked loop (PLL). A major contribution is the identification of a design figure of merit k , which is independent or the number of stages in the ring.
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Jitter in ring oscillaton is theoretically described, and predictions are experimentally verified. A design procedure is developed in the context of time domain measures or oscillator Jitter in a plase-locked loop (PLL). A major contribution is the identification of a design figure of merit k , which is independent or the number of stages in the ring.
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Resonance frequencies of a ring fluxon oscillator
Applied Physics Letters, 1986The behavior of a long ring Josephson transmission line (fluxon oscillator) is analyzed in the presence of a bias dc current. The conditions of stability for fluxon oscillations and the dependence of their frequnecy on both the intensity of the bias current and the radius of the line are determined analytically. A splitting of the fundamental resonance
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