Feed-forward bandpass delta-sigma converter with tunable center

Details Feed-forward bandpass delta-sigma converter with tunable center Feed-forward bandpass delta-sigma converter with tunable center

1996-10-22

1998-05-26

Gaffin, Jeffrey A.

Coded data generation or conversion

Analog to or from digital conversion

Differential encoder and/or decoder

341155, H03M 300

Patent

active

057573000

ABSTRACT:
Delta sigma modulators for accepting input signals having amplitudes up to /90, 44F 90!, and which are not prone to internal overflow, require few circuit parameters, and yield a signal transfer function with the inherent property that the modulator magnitude response is close to unity gain in the frequency region of interest include, in one embodiment, a pair of cascaded integrators, a unit delay element coupled to the output of the second integrator, an analog-to-digital (A/D) converter, and a one-bit digital-to-analog (D/A) converter controlled by output signals from the A/D converter. A first differential summing junction coupled to the output of the D/A converter is responsive to delta sigma modulator input signals. A second differential summing junction, coupled to the output of the first differential summing junction, is also coupled to receive a feedback signal from the second integrator. A third differential summing junction, coupled to the output of the unit delay element, also receives feed-forward signals from the second integrator.

REFERENCES:
patent: 5065157 (1991-11-01), Ribner et al.
patent: 5103229 (1992-04-01), Ribner
patent: 5142286 (1992-08-01), Ribner et al.
patent: 5148166 (1992-09-01), Ribner
patent: 5181032 (1993-01-01), Ribner
patent: 5187482 (1993-02-01), Tiemann et al.
patent: 5283578 (1994-02-01), Ribner et al.
patent: 5323157 (1994-06-01), Ledzius et al.
patent: 5392042 (1995-02-01), Pellon
patent: 5500645 (1996-03-01), Ribner et al.
patent: 5623263 (1997-04-01), Kuo et al.

Affiliated with

Also associated with

Rating

Feed-forward bandpass delta-sigma converter with tunable center does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Feed-forward bandpass delta-sigma converter with tunable center , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Feed-forward bandpass delta-sigma converter with tunable center will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1966810