US 12,756,366 B2 · Matching network for a power amplifier

Abstract

Methods and apparatus for transferring a signal from a first stage of an amplification circuit to a second stage of an amplification circuit via a matching network are described. An example matching network generally includes a transformer, a first coil selectively coupled, inductively, to the transformer, and inductive path(s) coupled between a first input node and a first output node of the transformer. Each inductive path includes a respective second coil selectively coupled, inductively, to the transformer. The transformer includes: the first input node and a second input node for coupling to the first stage; the first output node and a second output node for coupling to the second stage; a primary winding coupled between the first input node and the second input node; and a secondary winding inductively coupled to the primary winding and coupled between the first output node and the second output node.

Claims20

Dependent claims

A matching network for an amplification circuit, comprising:

a transformer comprising:
a first input node and a second input node for coupling to a first stage of the amplification circuit;
a first output node and a second output node for coupling to a second stage of the amplification circuit;
a primary winding coupled between the first input node and the second input node of the transformer;
and
a secondary winding inductively coupled to the primary winding and coupled between the first output node and the second output node of the transformer;
a first coil selectively coupled, inductively, to the transformer;
and
one or more first inductive paths coupled between the first input node and the first output node of the transformer, each inductive path of the one or more first inductive paths comprising a respective second coil selectively coupled, inductively, to the transformer.

6 more elements

A wireless device comprising:

a first amplifier;
a second amplifier;
and
a matching network coupled between the first amplifier and the second amplifier, the matching network comprising:
a transformer comprising:
a first input node and a second input node for coupling to a first output and a second output of the first amplifier;
a first output node and a second output node for coupling to a first input and a second input of the second amplifier;
a primary winding coupled between the first input node and the second input node of the transformer;
and
a secondary winding inductively coupled to the primary winding and coupled between the first output node and the second output node of the transformer;
a first coil selectively coupled, inductively, to the transformer;
and
one or more first inductive paths coupled between the first input node and the first output node of the transformer, each inductive path of the one or more first inductive paths comprising a respective second coil selectively coupled, inductively, to the transformer.

10 more elements

A method of wireless communication, comprising:

transferring a signal from a first amplifier to a second amplifier via a matching network, wherein the matching network comprises:
a transformer comprising:
a first input node and a second input node for coupling to a first output and a second output of the first amplifier;
a first output node and a second output node for coupling to a first input and a second input of the second amplifier;
a primary winding coupled between the first input node and the second input node of the transformer;
and
a secondary winding inductively coupled to the primary winding and coupled between the first output node and the second output node of the transformer;
a first coil selectively coupled, inductively, to the transformer;
and
one or more inductive paths coupled between the first input node and the first output node of the transformer, each inductive path of the one or more inductive paths comprising a respective second coil selectively coupled, inductively, to the transformer;
and
amplifying, via the second amplifier, the signal transferred via the matching network.

9 more elements

Dependencies are inferred from the claim text.

Matching network for a power amplifier

Life of this patent

Matching network for a power amplifier

Life of this patent

Abstract

Claims20