Amplifier with improved linearization
AssigneeQUALCOMM Incorporated
InventorsSusanta Sengupta, Kenneth Charles Barnett
Life of this patent
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Abstract
According to some embodiments, an amplifier may include a transconductance stage, a tail current source stage, and an adaptive biasing stage. The transconductance stage may be configured to receive an input voltage. The tail current source stage may be configured to provide current to the transconductance stage. The adaptive biasing stage may capacitively couple the transconductance stage to the tail current source stage.
Claims36
An apparatus comprising an amplifier, wherein the amplifier comprises:
- a transconductance stage configured to receive an input voltage;
- a tail current source stage configured to provide current to the transconductance stage;
- and
- an adaptive biasing stage configured to capacitively couple the transconductance stage to the tail current source stage.
An amplifier, comprising:
- transconductance means for receiving an input voltage;
- current providing means for providing current to the transconductance means;
- and
- adaptive biasing means for capacitively coupling the transconductance means to the current providing means.
An integrated circuit for amplifying an input voltage, the integrated circuit comprising:
- a first sub-circuit for receiving the input voltage;
- a second sub-circuit for providing current to the first sub-circuit;
- and
- a third sub-circuit for adaptively biasing the amplifier by capacitively coupling the first sub-circuit to the second sub-circuit.
A method for amplifying received signals, comprising:
- receiving an input voltage at a transconductance stage;
- providing current to the transconductance stage by a current source;
- and
- adaptively biasing the current source by capacitively coupling the transconductance stage to the current source.
Dependencies are inferred from the claim text.