Sigma-delta modulator

Details Sigma-delta modulator Sigma-delta modulator

2007-08-14

2009-06-30

Barnie, Rexford (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

C341S144000

Reexamination Certificate

active

07554472

ABSTRACT:
A sigma-delta modulator arrangement is disclosed that has a mechanism for breaking down a data word of the input signal into subwords with a different significance. The disclosed sigma-delta modulator arrangement also has a plurality of sigma-delta modulators whose inputs are assigned to respective subwords of the input signal.

REFERENCES:
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patent: 2006/0119493 (2006-06-01), Tal et al.
patent: 2006/0290550 (2006-12-01), Lee
Norsworthy, Steven R. et al., “Delta-Sigma Data Converters”, IEEE Press 1997, Book, ISBN 0-7803-1045-4.
Riley, Tom A. D. et al., “Delta-Sigma Modulation in Fractional-N Frequency Synthesis” IEEE Journal of Solid-State Circuits, vol. 28, No. 5, May 5, 1993, pp. 553-559.
Vaidyanathan, P. P., “Multirate Digital Filters, Filter Banks, Polyphase Networks, and Applications: A Tutorial”, Proceedings of the IEEE, vol. 78, No. 1, Jan. 1990.

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