SYSTEMS AND METHODS RELATED TO SWITCHABLE OUTPUT STAGES IN POWER AMPLIFIERS

摘要

Systems and method related to switchable output stages in power amplifiers. In some embodiments, a power amplifier (PA) circuit can include a driver stage configured to amplify a radio-frequency (RF) signal. The PA circuit can further include a plurality of output stages, with each output stage being configured to be capable of further amplification the RF signal. The PA circuit can further include a switch implemented to route the amplified RF signal from the driver stage to a selected one of the plurality of output stages, such that the selected output stage further amplifies the amplified RF signal.

主权项

1. A front-end architecture for a wireless device, the front-end architecture comprising:
a power amplifier (PA) configured to amplify a radio-frequency (RF) signal for transmission, the PA including a driver stage and a plurality of output stages; an RF switch configured to route a partially amplified RF signal from the driver stage to a selected one of the plurality of output stages, such that the selected output stage further amplifies the partially amplified RF signal; and a plurality of antennas including a selected antenna, the selected antenna coupled to the selected output stage to facilitate transmission of the amplified RF signal through the selected antenna.