Results 241 to 250 of about 6,200,319 (299)
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Measurements of Frequency Stability
Proceedings of the IEEE, 1986The characterization of frequency stability in the time domain and frequency domain are briefly defined and their relationships explained. Techniques for making precise measurements of frequency fluctuations in oscillators, multipliers, dividers, amplifiers, and other components are discussed.
F L Walls, D W Allan
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Characterization of Frequency Stability: Frequency-Domain Estimation of Stability Measures
Proceedings of the IEEE, 1991The author focuses on the frequency domain approach, which provides a complete characterization of frequency. The standard characterization of frequency stability in the frequency domain is the spectral density function (SDF). The author describes SDFs that model sampled frequency stability data and that are related to the SDFs of the standard ...
D B Percival
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Characterization of the frequency stability of frequency-hopping sources
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1991A method that applies time-domain stability measures, hitherto used only in the context of fixed-frequency sources, to the characterization of frequency-hopped sources is introduced. This method has been successfully applied to the testing of a novel practical frequency-hopping synthesizer. It is shown that despite the fact that hopping sources exhibit
G A, Kalivas, R G, Harrison
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Frequency stability of a Zeeman-stabilized laser
Applied Optics, 1985The frequency of a commercial hard-sealed He–Ne laser has been stabilized to the center of the discharge gain profile using the mode splitting caused by an axial magnetic field. The absolute frequency has been measured repeatedly during intermittent operation over 20 months. Its drift over most of this period has been 2.6 ± 0.7 MHz/yr.
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Frequency Stabilization of a Gas Laser
Applied Optics, 1969The frequency of a gas laser was stabilized by making use of the competition between the oppositely circularly polarized components of a single cavity mode of a laser in an axial magnetic field. For appropriate transitions the coupling between the polarizations leads to a sharp crossover in their intensities as the cavity is tuned across the center of ...
W J, Tomlinson, R L, Fork
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Stability Analysis for High Frequency Networked Control Systems
IEEE Transactions on Automatic Control, 2012 This note generalizes the stability analysis for a high frequency networked control system. The high-frequency networked control system is described by a delta operator system with a high frequency constraint.
Hongjiu Yang, Peng Shi, Yuanqing Xia
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Frequency stability and stabilization of a chemical laser
IEEE Journal of Quantum Electronics, 1978We have built a low-power CW HF/DF chemical laser, designed to achieve high-frequency stability. Measurements are reported which characterize the instantaneous spectral width of the laser output to less than one part in 1011( \Delta\nu kHz) and the variations in absolute frequency of this emission with time to four parts in 1010( \Delta\nu = \pm20 kHz)
J. Munch, M. Kolpin, J. Levine
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Angle, Voltage, and Frequency Stability
2008info:eu-repo/semantics ...
Cañizares, Claudio +2 more
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Stability in phonational frequency range
Journal of Communication Disorders, 1989The purpose of the present study was to investigate the stability of total phonational frequency range, and the stability of the elements from which it is calculated--lowest fundamental frequency and highest fundamental frequency--both within a single day and over a prolonged period.
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The Stabilization of the Frequency of a Klystron
IETE Journal of Research, 1968ABSTRACTA modified Pound stabilization system for the automatic frequency control of a klystron has been described. The stability of frequency obtained is 5 parts in 107 which may be considered to be sufficient for the microwave generators used for the purpose of voice communication and in the field of electron spin resonance spectroscopy.
A. K. Roy, R. Roy
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