Systems, circuits and methods related to dynamic error vector magnitude corrections

摘要

Systems, circuits and methods related to dynamic error vector magnitude (DEVM) corrections. In some embodiments, a power amplifier (PA) system can include a PA circuit having a plurality of amplification stages, and a bias system in communication with the PA circuit and configured to provide bias signals to the amplification stages. The PA system can further include a first correction circuit configured to generate a correction current that results in an adjusted bias signal for a selected amplification stage, with the adjusted bias signal being configured to compensate for an error vector magnitude (EVM) during a dynamic mode of operation. The PA system can further include a second correction circuit configured to change the correction current based on an operating condition associated with the PA circuit.

主权项

1. A power amplifier (PA) system comprising:
a power amplifier circuit including a plurality of amplification stages; a bias system in communication with the power amplifier circuit, the bias system configured to provide bias signals to the plurality of amplification stages; a first correction circuit configured to generate a correction current that results in an adjusted bias signal for a selected amplification stage, the adjusted bias signal configured to compensate for an error vector magnitude (EVM) during a dynamic mode of operation; and a second correction circuit configured to change the correction current based on an operating condition associated with the power amplifier circuit, the second correction circuit being separate from the bias-system.