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US 2018/0026593 A1Published application
Doherty amplifier
AssigneeSkyworks Solutions, Inc.
InventorsKenneth Sean Ozard, Anthony Trujillo
Life of this patent
Estimating the term…
Abstract
A multistage linear power amplifier receiving an input signal. The multistage linear power amplifier comprises a plurality of Class-AB amplifiers connected in a cascade configuration. The plurality of Class-AB amplifiers amplifies the input signal to generate an amplified input signal. At least one of the plurality of Class-AB amplifiers is biased such that the multistage linear power amplifier emulates a Class-C amplifier.
Claims21
1-19. (canceled)
A multistage power amplifier comprising:
- a plurality of amplifiers of a first type, the plurality of amplifiers connected in a cascade configuration and configured to amplify an input signal to generate an amplified input signal, at least one of the plurality of amplifiers of the first type biased such that the multistage power amplifier emulates a behavior of an amplifier of a second type.
A Doherty power amplifier comprising:
- a first multistage power amplifier receiving an input signal, the first multistage power amplifier including a first plurality of amplifiers of a first type, the first plurality of amplifiers connected in a cascade configuration;
- and
- a second multistage power amplifier receiving a phase-shifted input signal obtained by phase shifting the input signal, the second multistage power amplifier including a second plurality of amplifiers of the first type, the second plurality of amplifiers connected in a cascade configuration and configured to amplify the phase-shifted input signal, at least one of the second plurality of amplifiers of the first type biased such that the second multistage power amplifier emulates a behavior of an amplifier of a second type.
A Doherty power amplifier comprising:
- a signal splitter configured to split an input signal into a first input signal and a second input signal;
- a first multistage power amplifier including a first plurality of amplifiers of a first type and configured to amplify the first input signal;
- and
- a second multistage power amplifier including a second plurality of amplifiers of the first type and configured to amplify the second input signal, at least one of the second plurality of amplifiers of the first type biased such that the second multistage power amplifier emulates a behavior of an amplifier of a second type.
1 more element
Dependencies are inferred from the claim text.