Patent ID: 8472897

Claim:
A method for linearizing an output of a power amplifier in a wireless broadband transmitter, the method comprising the steps of: a) biasing the power amplifier to operate initially in a first bias point in a cut-off region; b) determining a first set of predistortion lookup table entries from a predistortion lookup table; c) applying the first set of predistortion lookup table entries to correct a radio frequency (RF) modulated signal while operating at the first bias point in the cut-off region; d) biasing a static point of the power amplifier to a second bias point in a linear region of the power amplifier; e) determining a second set of predistortion lookup table entries from the predistortion lookup table; f) applying the second set of predistortion lookup table entries to the RF modulated signal, such that an error signal associated with a feedback component of the power amplifier and the RF modulated signal is reduced at the second bias point compared to the first bias point; and g) repeating steps (d) through (f) until the error signal is adequately corrected.