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US 2018/0026594 A1Published application
Peaking amplifier bias control
AssigneeSkyworks Solutions, Inc.
InventorPhilip John LEHTOLA
Life of this patent
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Abstract
A Doherty power amplifier includes a carrier amplifier, a peaking amplifier, and a peaking amplifier bias circuit coupled to the peaking amplifier and configured to provide a peaking amplifier bias signal to the peaking amplifier based on a saturation level of the carrier amplifier.
Claims20
A Doherty power amplifier comprising:
- a carrier amplifier;
- a peaking amplifier;
- and
- a peaking amplifier bias circuit coupled to the peaking amplifier and configured to provide a peaking amplifier bias signal to the peaking amplifier based on a saturation level of the carrier amplifier.
1 more element
A method of amplifying a radio-frequency signal comprising:
- receiving a voltage supply signal;
- receiving a radio-frequency signal;
- generate an amplified radio-frequency signal from the voltage supply signal and the radio-frequency signal using a carrier amplifier and a peaking amplifier;
- generating a bias signal indicating a saturation level of the carrier amplifier;
- and
- biasing the peaking amplifier using the bias signal.
3 more elements
A method of fabricating a power amplifier module comprising:
- forming a carrier amplifier on a semiconductor substrate;
- forming a peaking amplifier on the semiconductor substrate;
- and
- coupling a peaking amplifier bias circuit to the peaking amplifier over a coupling path, the peaking amplifier bias circuit being configured to generate a peaking amplifier bias signal that is based at least in part on a saturation level of the carrier amplifier.
1 more element
Dependencies are inferred from the claim text.