Patent ID: 9571056
Date: 2017-02-14
CPC Classifications: H03F,H03G,H04B

Claim:
1. Radio frequency (RF) power amplifier (PA) circuitry comprising: an amplifier stage configured to receive and amplify an RF input signal to provide an RF output signal; gain compensation circuitry coupled in parallel with the amplifier stage and configured to receive the RF input signal and provide a gain compensation signal, wherein the gain compensation signal is configured to increase a range of RF input power of the RF input signal over which a gain response of the RF PA circuitry remains substantially constant; an adder coupled between an output of the amplifier stage and the gain compensation circuitry and configured to receive and add the RF output signal and the gain compensation signal to provide a linearized RF output signal; and capacitance compensation circuitry coupled to an input of each one of the amplifier stage and the gain compensation circuitry and configured to maintain an input capacitance of the amplifier stage at a constant value.