Methods and apparatuses for reducing DC offsets in a communication system
are described. In a first aspect, a feedback loop circuit reduces DC
offset in a wireless local area network (WLAN) receiver channel. The
frequency response of the feedback loop circuit can be variable. In a
second aspect, a circuit provides gain control in a WLAN receiver
channel. First and second automatic gain control (AGC) amplifiers are
coupled in respective portions of the receiver channel. Circuits for
monitoring DC offset, and for providing control signals for controlling
the frequency response of the DC offset reducing circuits are also
provided.