Integrated multi-mode bandpass sigma-delta receiver subsystem wi

Details Integrated multi-mode bandpass sigma-delta receiver subsystem wi Integrated multi-mode bandpass sigma-delta receiver subsystem wi

1998-10-19

2000-12-12

Pham, Chi H.

Pulse or digital communications

Receivers

Automatic gain control

375316, 341143, H04L 2708

Patent

active

061608599

ABSTRACT:
An integrated multi-mode bandpass sigma-delta radio frequency receiver subsystem with interference mitigation includes a first intermediate frequency amplifier. At least one mixer for mixing the output of the first amplifier and an oscillator signal. A second IF amplifier for amplifying and filtering the output of the at least one mixer. A multi mode multi bandwidth sigma delta analog digital converter for providing digital output signals with high dynamic range. A digital mixer providing I and Q signals a decimation network providing I and Q signals at reduced programmable data and clock frequencies and a formatting network for arranging the I and Q signals into a predetermined format for use with a digital signal processor.

REFERENCES:
patent: 5345409 (1994-09-01), McGrath et al.
patent: 5442353 (1995-08-01), Jackson
patent: 5541600 (1996-07-01), Blumenkrantz et al.
patent: 5621345 (1997-04-01), Lee et al.
patent: 5689440 (1997-11-01), Leitch et al.
patent: 5787125 (1998-07-01), Mittel

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