Patent ID: 7248649

Claim:
A digital baseband (DBB) receiver for receiving and processing a wireless communication signal, the DBB receiver comprising: a) a demodulator which outputs analog real and imaginary signal components in response to receiving the communication signal; b) a first analog low pass filter (LPF) which receives the analog real signal component from the demodulator and outputs a distorted analog real signal component; c) a second analog LPF which receives the analog imaginary signal component from the demodulator and outputs a distorted analog imaginary signal component; d) a first digital gain control circuit which receives the distorted analog real signal component from the first analog LPF and outputs a processed distorted digital real signal component; e) a second digital gain control circuit which receives the distorted analog imaginary signal component from the second analog LPF and outputs a processed distorted digital imaginary signal component; and f) a digital time domain compensation module which receives the processed distorted digital real and imaginary signal components and outputs digital real and imaginary compensated signal components, wherein the digital time domain compensation module removes group delay variation distortion, introduced by the first and second analog LPFs, from the real and imaginary signal components.