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US 9,935,593 B2Granted
Power amplifier bias circuit
AssigneeSkyworks Solutions, Inc.
InventorAleksey A. Lyalin
Life of this patent
Estimating the term…
Abstract
Power amplifier bias circuit. A power amplifier bias circuit can include an emitter follower device and an emitter follower mirror device coupled to form a mirror configuration. The emitter follower device can be configured to provide a bias signal for a power amplifier at an output port. The power amplifier bias circuit can include a reference device configured to mirror an amplifying device of the power amplifier. The emitter follower mirror device can be configured to provide a mirror bias signal to the reference device.
Claims12
A power amplifier bias circuit comprising:
- an emitter follower device and an emitter follower mirror device coupled to form a mirror configuration, the emitter follower device being configured to provide a bias signal for a power amplifier at an output port;
- a reference device configured to mirror an amplifying device of the power amplifier, the emitter follower mirror device being configured to provide a mirror bias signal to the reference device;
- an enable circuit coupled between an input port of the power amplifier bias circuit and the reference device;
- an output resistor coupled between the emitter follower device and the output port;
- and
- a reference-base resistor coupled between the emitter follower mirror device and the reference device.
3 more elements
Dependencies are inferred from the claim text.