Power amplification system

The invention discloses a power amplification system. The power amplification system is used for amplifying signals such as radio-frequency signals and comprises a plurality of power amplifiers and apower amplifying controller. The power amplifiers are used for amplifying signals received at a signal input position and outputting the amplified signals at a signal output position and further receive a power voltage which is a combination of a battery voltage and an envelope tracking signal. The power amplifying controller controls the power amplifiers at least partially on the basis of the battery voltage or power output of the power amplifiers. The power amplifying controller is configured as an impedance matching part for changing the power amplification system to reconfigure a load lineof the power amplifiers. 本发明公开了种功率放大系统，其被配置为放大诸如射频信号之类的信号,功率放大系统包括多个功率放大器，其被配置为放大在信号输入处接收的信号并在信号输出处输出放大的信号，功率放大器被配置为接收电源电压，该电源电压是电池电压和包络跟踪信号的组合，功率放大系统包括功率放大控制器，其被配置为至少部分地基于电池电压或功率放大器的功率输出来控制功率放大器，功率放大控制器可以被配置为改变功率放大系统的阻抗匹配部件，