Patent ID: 7702288

Claim:
A digital baseband (DBB) transmitter comprising: an analog radio transmitter including: a power amplifier; a modulator, and a temperature sensor configured to monitor a temperature reading of the analog radio transmitter, wherein the temperature sensor is not a component of the power amplifier; a memory including a plurality of look up tables (LUTs) that store gain and phase characteristics of the power amplifier; and a plurality of digital compensation modules including: a digital direct current (DC) offset compensation module having two signal inputs including an in-phase (I) signal component and a quadrature (Q) signal component, configured to correct carrier leakage associated with the modulator; a power detector configured to: determine a minimum detected reading associated with each of the signal inputs; and determine first and second DC offset compensation values based on interpolating the minimum detected readings; and the digital DC offset compensation module configured to adjust the respective DC levels of the two signal inputs based on the first and second DC offset compensation values, wherein compensation parameters are set up for at least one of the compensation modules by selecting one of the LUTs based on the temperature reading.