| 摘要 |
<p>A radio frequency (RF) power amplifier system that comprises a power amplifier configured to amplify an RF input signal to generate an RF output signal. The power amplifier has a gain that is controlled by a supply voltage to the power amplifier. An amplitude detector is configured to generate an amplitude signal indicative of an amplitude of the RF input signal. A power supply generates the supply voltage to the power amplifier based on the amplitude signal indicative of the amplitude of the RF input signal. The gain of the power amplifier is allowed to have variations over the amplitude range of the RF input signal in favor of having a supply voltage that is monotonic relative to the amplitude of the RF input signal across an amplitude range of the RF input signal.</p> |
