US 2011/0217945 A1 · DUAL CARRIER AMPLIFIER CIRCUITS AND METHODS

Abstract

In one embodiment, the present disclosure includes a circuit comprising first and second transconductance stages that receive an RF signal and a current combiner circuit. The current combiner circuit couples current from the first transconductance stage to (i) one of a first output path or a second output path or (ii) both the first output path and second output path. The current combiner circuit decouples current from the second transconductance stage from both the first output path and second output path when the first transconductance stage couples current to one of the first output path or the second output path. The current combiner circuit couples current from the second transconductance stage to both the first output path and the second output path when the first transconductance stage couples current to both the first output path and the second output path.

Claims20

Dependent claims

A circuit comprising:

a first transconductance stage having an input to receive a signal;
a second transconductance stage having an input to receive the signal;
and
a current combiner circuit coupled to an output of the first transconductance stage and an output of the second transconductance stage,
wherein the current combiner circuit forms a path from the first transconductance stage to (i) one of a plurality of output paths or (ii) multiple output paths of the plurality of output paths,
and wherein the current combiner circuit severs the second transconductance stage from the plurality output paths when the first transconductance stage forms a path to one of the plurality of output paths,
and wherein the current combiner circuit forms a path from the second transconductance stage to the multiple output paths of the plurality of output paths when the first transconductance stage forms a path to the multiple output paths of the plurality of output paths.

4 more elements

A method comprising:

receiving a signal in a first transconductance stage;
receiving the signal in a second transconductance stage;
and
forming paths from the first transconductance stage and the second transconductance stage to (i) one of a plurality of output paths or (ii) multiple output paths of the plurality of output paths,
wherein the second transconductance stage is severed from the plurality output paths when the first transconductance stage forms a path to one of the plurality of output paths,
and wherein the second transconductance stage forms a path to the multiple output paths of the plurality of output paths when the first transconductance stage forms the path to the multiple output paths of the plurality of output paths.

3 more elements

Dependencies are inferred from the claim text.

Dual carrier amplifier circuits and methods

Life of this patent

Dual carrier amplifier circuits and methods

Life of this patent

Abstract

Claims20