High efficiency linearization power amplifier for wireless communication
AssigneeDali Systems Co. Ltd.
InventorsDali Yang, Jia Yang
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Abstract
A predistortion system for linearizing the output of a power amplifier includes a first signal representative of an RF modulated signal and a feedback signal representative of nonlinear characteristics of a power amplifier. The system also includes a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a correction factor for correcting the nonlinear characteristics of the power amplifier and combining logic which combines the RF modulated signal with a signal corresponding to the correction factor and supplies it to the power amplifier to linearize the output of the power amplifier.
Claims1
A predistortion system for linearizing the output of a power amplifier comprising:
- a first signal representative of an RF modulated signal;
- a feedback signal representative of nonlinear characteristics of a power amplifier;
- a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a correction factor for correcting the nonlinear characteristics of the power amplifier;
- and
- combining logic which combines the RF modulated signal with a signal corresponding to the correction factor and supplies it to the power amplifier to linearize the output of the power amplifier.
Dependencies are inferred from the claim text.