Amplifiers Operating in Envelope Tracking Mode or Non-Envelope Tracking Mode

摘要

Various envelope tracking amplifiers are presented that can be switched between an ET (envelope tracking) mode and a non-ET mode. Switches and/or tunable components are utilized in constructing the envelope tracking amplifiers that can be switched between the ET mode and the non-ET mode.

主权项

1. An amplifier arrangement configured to operate based on a mode of operation, comprising:
an adjustable power supply controlled by a first control signal to provide either a variable supply or a constant supply to the amplifier arrangement; and a power amplifier comprising a configuration arrangement controlled by secondary control signals, the configuration arrangement adapted to configure the power amplifier based on the mode of operation, wherein the mode of operation comprises a first mode of operation and a second mode of operation, the first mode of operation corresponding to the adjustable power supply providing variable supply to the power amplifier, the second mode of operation corresponding to the adjustable power supply providing constant supply to the power amplifier, the mode of operation switching between the first mode of operation and the second mode of operation and vice versa based on an input signal to the power amplifier, and the adjustable power supply is configured to provide a bias voltage to a drain of a transistor of the power amplifier and a bias voltage to a gate of a transistor of the power amplifier.