Split Bias with Single Control Current Source for Radio Frequency Power Amplifier
AssigneeHuawei Technologies Co., Ltd.
InventorJason Xiangdong Deng
Life of this patent
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Abstract
A power amplifier includes a first driver stage, a second driver stage, and a biasing component including a first emitter follower circuit and a second emitter follower circuit. The biasing component is configured to receive a first source current from a first current source, and provide a first bias voltage to the first driver stage using the first emitter follower circuit and a second bias voltage to the second driver stage using the second emitter follower circuit. The first bias voltage and the second bias voltage are based upon the first current source.
Claims20
A power amplifier driver comprising:
- a first driver stage;
- a second driver stage;
- and
- a biasing component including a first emitter follower circuit and a second emitter follower circuit, the biasing component configured to receive a first source current from a first current source, and to provide a first bias voltage to the first driver stage using the first emitter follower circuit and a second bias voltage to the second driver stage using the second emitter follower circuit, the first bias voltage and the second bias voltage being based upon the first current source.
A power amplifier comprising:
- a first driver stage;
- a second driver stage coupled to the first driver stage;
- an output stage coupled to the second driver stage;
- and
- a biasing component including a first emitter follower circuit and a second emitter follower circuit, the biasing component configured to receive a first source current from a first current source, and provide a first bias voltage to the first driver stage using the first emitter follower circuit and a second bias voltage to the second driver stage using the second emitter follower circuit, the first bias voltage and the second bias voltage being based upon the first current source.
A device comprising:
- a transceiver;
- a power amplifier coupled to the transceiver, the power amplifier including a first driver stage and a second driver stage;
- a first current source;
- and
- a biasing component including a first emitter follower circuit and a second emitter follower circuit, the biasing component configured to receive a first source current from the first current source, and provide a first bias voltage to the first driver stage using the first emitter follower circuit and a second bias voltage to the second driver stage using the second emitter follower circuit based upon the first current source.
Dependencies are inferred from the claim text.