Skyworks Solutions, Inc.

Yuan Cao

Yu-Jui Lin

Russ Alan Reisner

Bo Pan

Apparatus and methods for power amplifier output matching is disclosed. In one aspect, there is provided an output matching circuit including an input configured to receive an amplified radio frequency signal from a power amplifier, a first output, and a second output. The output matching circuit further includes a first matching circuit electrically connected between the input of the output matching circuit and the first output, the first matching circuit configured to suppress harmonics of a fundamental frequency of the amplified radio frequency signal when the amplified radio frequency signal is within a first band. The output matching circuit further includes a second matching circuit electrically connected between the input of the output matching circuit and the second output, the second matching circuit configured to suppress harmonics of the fundamental frequency of the amplified radio frequency signal when the amplified radio frequency signal is within a second band different from the first band.

Apparatus and methods for power amplifier output matching

Systems and methods are provided herein that include an amplifier arrangement and a balun arrangement that accommodate two or more frequency bands using various common components that are operated and/or coupled in differing ways based upon which frequency band is in operation.

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Milpitas, CA, United States of America

Yuan Cao