System and method for distortion cancellation in amplifiers

Details System and method for distortion cancellation in amplifiers System and method for distortion cancellation in amplifiers

2007-11-27

2008-12-02

Pascal, Robert (Department: 2817)

Amplifiers

With amplifier bypass means

C330S295000

Reexamination Certificate

active

07459974

ABSTRACT:
A distortion cancellation amplifier is described having a main amplifier and an error amplifier. The main amplifier, in response to an input signal, generates an output signal having an amplified signal component and a distortion signal component. The error amplifier is sized and biased to generate, in response to the same input signal, a distortion signal component that has substantially the same magnitude as the distortion signal component of the main amplifier. The distortion signal component from the error amplifier is subtracted from the output signal of the main amplifier.

REFERENCES:
patent: 5523717 (1996-06-01), Kimura
patent: 5608352 (1997-03-01), Itakura
patent: 6320461 (2001-11-01), Lee
patent: 6509796 (2003-01-01), Nguyen et al.
patent: 6885245 (2005-04-01), Liu
patent: 6980050 (2005-12-01), Liu
patent: 6985035 (2006-01-01), Khorramabadi

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