Patent ID: 9531412
Filing Date: 2016-12-27
CPC Classification: H03F,H04B

Claim Text:
1. A wireless communications system comprising: a coupler configured to sample a first transmission signal at a transmission radio frequency to generate a feedback signal; a first feedback downconverter configured to downconvert a first signal to an intermediate frequency to generate an intermediate frequency second signal, the first signal being based on the feedback signal from the transmission radio frequency; a predistorter module configured to: a second upconverter configured to upconvert an intermediate frequency fourth signal to generate a transmission radio frequency fifth signal, the intermediate frequency fourth signal being based on the distorted output signal to the transmission radio frequency; a gallium nitride (GaN) power amplifier configured to amplify power of a transmission radio frequency sixth signal to generate a transmission radio frequency amplified signal, the GaN power amplifier adding amplifier distortion, wherein at least some of the added distortion from the predistorter module cancels at least some of the amplifier distortion, the transmission radio frequency sixth signal being based on the transmission radio frequency fifth signal; and an antenna configured to transmit a transmission radio frequency seventh signal, the seventh signal being based on the transmission radio frequency amplified signal.