Synchronous sigma delta modulator including a decision circuit u

Details Synchronous sigma delta modulator including a decision circuit u Synchronous sigma delta modulator including a decision circuit u

1998-04-14

2000-08-01

Young, Brian

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341155, H03M 300, H03M 112

Patent

active

060973250

ABSTRACT:
The invention relates to a synchronous sigma-delta modulator with a feedback loop which comprises an integrating filter followed by a polyphase sampler generating a plurality of phase shifted samples and an adder to add the plurality of phase shifted samples and to feed the added samples back to the input of the integrating filter.

REFERENCES:
patent: 4926178 (1990-05-01), Mallinson
patent: 4954824 (1990-09-01), Yamada et al.
patent: 5055846 (1991-10-01), Welland
patent: 5621408 (1997-04-01), Cake et al.
patent: 5719571 (1998-02-01), Akune et al.
"A Unity Bit Coding Method by Negative Feedback", by H. Inose et al., Proceedings of the IEEE, Nov. 1963, pp. 1524-1535.

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