| 摘要 |
<p>A liner power amplifier arrangement (100, 300) is used for providing a selectable amount of amplification to a radio frequency signal to be amplified. The arrangement comprises a first parallel amplifier branch and a second parallel amplifier branch and means (102, 103, 301, 302, 401, 402, 403) for conducting the radio frequency signal to be amplified selectably to one of the parallel amplifier branches. Additionally it comprises in the first parallel amplifier branch a series connection of a predistorter (107, PRED) and a nonlinear amplifier (106, NPA), where said predistorter is arranged to compensate for the nonlinearity of said nonlinear amplifier. <IMAGE></p> |
