Method and apparatus for characterizing phase noise and timing j

Details Method and apparatus for characterizing phase noise and timing j Method and apparatus for characterizing phase noise and timing j

1998-06-12

2000-12-26

Hoff, Marc S.

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

702 69, 702111, 375226, 375227, H04B 1500, H04B 1700

Patent

active

061673595

ABSTRACT:
A nonlinear analysis for characterizing phase noise and timing jitter in oscillators is disclosed. The method and apparatus utilize a nonlinear differential equation to characterize the phase error of a given oscillator. A precise stochastic characterization of timing jitter and spectral dispersion is also disclosed based on the nonlinear differential equation. Representative time and frequency domain computational techniques are disclosed for characterizing the phase noise and timing jitter of circuits. In addition, a single scalar constant, c, is utilized to describe jitter and spectral spreading in a noisy oscillator.

REFERENCES:
patent: 3828138 (1974-08-01), Fletcher et al.
patent: 5943637 (1999-08-01), Okumura
patent: 6020782 (2000-02-01), Albert et al.
Alper Demir; "Phase Noise in Oscillators: DAES and Colored Noise Sources"; Bell Laboratories, pp. 170-177, 1998
Franz X. Kaertner; "Analysis of White and f.sup.-.alpha. Noise in Oscillators"; International Journal of Circuit Theory of Application, vol. 18; pp. 485-519, 1990.
F.L. Walls et al., "Extending the Range and Accuracy of Phase Noise Measurement" 42nd Annual Frequency Control Symposium; pp. 432-441, 1988.
Makiki Okumura and Hiroshi Tanimoto, A Time-Domain Method for Numerical Noise Analysis of Oscillators, Proc. of the Asia and South Pacific Design Automation Conference 477-82 (Jan. 1997).

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