Amplifier arrangement and method for calibrating an...

Details Amplifier arrangement and method for calibrating an... Amplifier arrangement and method for calibrating an...

2007-01-09

2007-01-09

Nguyen, Patricia (Department: 2817)

Amplifiers

With amplifier condition indicating or testing means

C330S278000, C330S098000

Reexamination Certificate

active

11025721

ABSTRACT:
An amplifier arrangement is disclosed that includes at least two series-connected, programmable amplifiers. The amplifiers each have a different amplifier step size. In addition, a calibration path is provided which feeds back the output of the second programmable amplifier to the programming inputs of the first and/or second programmable amplifier. The calibration path includes an analog/digital converter and an evaluation and control element. It is thus possible to calibrate away less-than-ideal characteristics, particularly in the case of changes in the gain from one amplifier block to another. The proposed amplifier arrangement and the method for calibration are particularly suitable for use in transmission and reception paths in transceivers which operate continuously over time.

REFERENCES:
patent: 6480061 (2002-11-01), Dolman et al.
patent: 6498927 (2002-12-01), Kang et al.
patent: 6785523 (2004-08-01), Husted et al.
patent: 6819938 (2004-11-01), Sahota
patent: 2003/0139147 (2003-07-01), Shi
patent: 2003/0215033 (2003-11-01), Drapkin et al.
patent: 101 63 466 (2003-07-01), None

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