Patent ID: 6433631
Filing Date: 2002-08-13
Classification: H04L

Abstract:
An apparatus for demodulating and digitizing a modulated data signal possibly having a wide range of power levels, comprising:a variable attenuation circuit configured to attenuate an amplitude of the modulated data signal in response to a feedback signal to generate an amplitude stabilized signal; a conversion circuit coupled to the variable attenuation circuit and configured to remove a modulation component from the amplitude stabilized signal to generate a digitized signal; a circuit coupled to the conversion circuit and configured to generate a reconstructed digital data signal and an amplitude signal from the digitized signal, wherein the reconstructed digital data signal is representative of the modulated data signal in a pre-modulated state and the amplitude signal is representative of an amplitude of the digitized signal; and an attenuation controller coupled to the circuit and the variable attenuation circuit, wherein the attenuation controller is configured to generate the feedback control signal from the amplitude signal.