Analog/digital converter with small crest factor dither signal s

Coded data generation or conversion – Analog to or from digital conversion – Analog to digital conversion

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341131, H03M 112

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active

060643285

ABSTRACT:
In an analog-digital converter, a sine signal angle-modulated with noise or pseudonoise is used as a dither signal. The dither signal is superposed on an analog useful signal that is to be digitized. This signal is then digitized. The dither signal is then filtered out to produce the digitized useful signal.

REFERENCES:
patent: 4761634 (1988-08-01), Yamaguchi et al.
patent: 5525984 (1996-06-01), Bunker
Babu et al., Testing an ADC . . . Dither, IEEE Transaction on instrumentation and Measurement, vol. 47, No. 4, pp. 839-848, Aug. 1998.
Wagdy et al. Linearizing . . . Digital Dither, IEEE Transactions on Instrumewntation and Measurement, vol. 43, No. 2, pp. 146-150, Apr. 1994.
Wagdy et al., Validity of Uniform . . . With Dither, IEEE Transactions on Instrumentation and Measurement, vol. 38, No. 3, pp. 718-722, Jun. 1989.

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