Power supply compensation

Details Power supply compensation Power supply compensation

2003-10-10

2009-06-23

Nguyen, Khanh V (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S251000

Reexamination Certificate

active

07551022

ABSTRACT:
The invention relates to an amplifier comprising amplification means (AM) comprising an input and an output, said amplification means (AM) comprising a switching output stage delivering at least one output signal (OUS) via said output, said amplification means being fed by power supply means (PSM) said amplifier further comprising compensation means (CM) providing a compensation signal (CS) derived from the power supply voltage (PSV) of the power supply means (PSM), said compensation signal (CS) comprising a substantially inverse representation of said power supply voltage (PSV) and said compensation signal (CS) being fed to said amplification means (AM). According to the invention, an effective error compensation of the output switching stage may in practice be implemented by establishment of a compensation, which on a run-time basis is based on the voltage of the power supply currently applied in the output switching stage.

REFERENCES:
patent: 5974089 (1999-10-01), Tripathi et al.
patent: 6140875 (2000-10-01), Van Den Homberg et al.
patent: 6297692 (2001-10-01), Nielsen
patent: 6344811 (2002-02-01), Melanson
patent: 6518838 (2003-02-01), Risbo
patent: 2002/0180518 (2002-12-01), Midya et al.
patent: 1 376 858 (2004-01-01), None
patent: 2004-201187 (2004-07-01), None
International Search Report; PCT/DK03/00688; May 18, 2004.

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