Oscillator noise analysis: multivariance measurement

Since the noise altering the output signal of oscillators may be modeled as power laws in the spectral density of frequency deviation, oscillator noise analysis is the measurement of the level of each power law noise. The principle of this new multivariance method consists of obtaining the noise-typ...

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Bibliographic Details
Published in:IEEE transactions on instrumentation and measurement 1993-04, Vol.42 (2), p.342-350
Main Authors: Vernotte, F., Lantz, E., Groslambert, J., Gagnepain, J.J.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Density measurement
Electric, optical and optoelectronic circuits
Electromagnetic interference
Electronic circuits
Electronics
Exact sciences and technology
Frequency measurement
Noise level
Noise measurement
Oscillators
Oscillators, resonators, synthetizers
Phase noise
Power measurement
Signal analysis
Working environment noise
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Summary:Since the noise altering the output signal of oscillators may be modeled as power laws in the spectral density of frequency deviation, oscillator noise analysis is the measurement of the level of each power law noise. The principle of this new multivariance method consists of obtaining the noise-type contributions with different variances and different integration time values. All the data obtained from the different variances with the different integration times are then operated simultaneously. Thus, the most probable measurement, in the sense of least squares, is obtained for each type of noise. This method lends itself to an estimation of the uncertainty of the noise-type contribution measurement, taking into account the dispersion of the variance results.< >
ISSN:0018-9456
1557-9662
DOI:10.1109/19.278579