Method and apparatus for generating a radio frequency signal

摘要

The invention relates to linearization of a radio frequency (RF) power amplifier ( 5 ) by predistortion. Digital predistortion is performed ( 1 ) on received digitized base-band input signals to compensate for amplifier distortion. The resulting signal is converted to an analog signal via two D/A converters ( 2 ), after which analog frequency conversion is performed ( 3 ) on the analog signal to achieve a radio frequency (RF) signal. This radio frequency signal is exposed to analog predistortion ( 4 ) and thereafter amplified by the power amplifier.