Patent ID: 8774327

Claim:
A method for adjusting a radio frequency (RF) receiver, the method comprising: enabling an initial setting of the RF receiver, wherein the initial setting is based on a bandwidth of a channel of a plurality of channels; receiving an RF signal containing a preamble of a frame via one of the plurality of channels; converting the RF signal to a baseband signal based on the initial setting; determining channel type of the one of the plurality of channels based on the baseband signal, and, based on the channel type: digitally shifting the baseband signal to produce a shifted baseband signal; digitally filtering the shifted baseband signal; adjusting a high pass filter of the RF receiver; and adjusting a low pass filter of the RF receiver; determining whether the channel type corresponds to the bandwidth of the initial setting; and when the channel type does not correspond to the bandwidth of the initial setting, adjusting setting of the RF receiver based on the channel type.