| 摘要 |
In a wireless transmitter (100), a class B or class C amplifier (131) is used as a power amplifier for boosting the power level of a signal to be transmitted. To linearize the power amplifier, a feedback mechanism (165) is included in the transmitter. The feedback mechanism provides for adjustment of a feedback gain which effects the overall gain of the signal, thereby effectively controlling the signal power level. In addition, a phase difference between components of the signal and the feedback versions thereof is corrected to increase the linearity of the power amplifier and stabilize the feedback mechanism. <IMAGE> |
