Bandpass sigma-delta analog-to-digital converter and...

Details Bandpass sigma-delta analog-to-digital converter and... Bandpass sigma-delta analog-to-digital converter and...

2005-09-13

2005-09-13

Williams, Howard L. (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

Reexamination Certificate

active

06943715

ABSTRACT:
The invention concerns a passband Sigma-Delta analog-to-digital converter comprising a first resonator and a second order second resonator, preferably of second order, whereof the respective central frequencies enable a high SNR in a relatively wide frequency band, and a MASH Sigma-Delta analog-to-digital converter incorporating at least two such cascaded converters.

REFERENCES:
patent: 5283578 (1994-02-01), Ribner et al.
patent: 5383578 (1995-01-01), Nishimura
patent: 5500645 (1996-03-01), Ribner et al.
patent: 5982315 (1999-11-01), Bazarjani et al.
patent: 6061008 (2000-05-01), Abbey
patent: 6121910 (2000-09-01), Khoury et al.
International Search Report PCT/FR02/01882 dated Sep. 6, 2002.

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