Patent ID: 6831510
Filing Date: 2004-12-14
Classification: H03F

Abstract:
A signal processing module comprising:a plurality of channel amplifiers each having two signal inputs, two signal outputs, a supply voltage input, and a bias voltage input, the channel amplifiers coupled in series and each operable to receive an input signal at the signal inputs, to amplify the input signal, and to provide the amplified signal at the signal outputs; a low-pass filter coupled to receive the output signal from one of the channel amplifiers and coupled to provide filtered output to an error amplifier, the low-pass filter operable to suppress high-frequency components of the output signal to generate the filtered output; and the error amplifier having two signal inputs, two signal outputs, a supply voltage input, and a bias voltage input, the error amplifier coupled to receive the filtered output from the low-pass filter at the signal inputs and coupled to provide an error cancellation signal from the signal outputs as feedback to the series of channel amplifiers.