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US 2020/0052660 A1Published application
Loadline switchable push/pull power amplifier
AssigneeSkyworks Solutions, Inc.
InventorsYuan Cao, Yu-Jui Lin, Bo Pan
Life of this patent
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Abstract
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.
Claims25
An amplifier system comprising:
- at least one common amplifier stage having an input to receive a radio-frequency signal and to provide a common amplified radio-frequency signal;
- a first amplifier stage having an input to receive the common amplified radio-frequency signal during a first mode of operation and to provide a first amplified radio-frequency signal;
- a second amplifier stage having an input to receive the common amplified radio-frequency signal during a second mode of operation and to provide a second amplified radio-frequency signal;
- a signal coupler having at least one first input to receive the first amplified radio-frequency signal from the first amplifier stage during the first mode of operation and at least one second input to receive the second amplified radio-frequency signal from the second amplifier stage during the second mode of operation.
1 more element
An amplifier system comprising:
- a first amplifier stage to provide a first balanced signal during a first mode of operation, the first balanced signal having a first frequency in a first frequency band;
- a second amplifier stage to provide a second balanced signal during a second mode of operation, the second balanced signal having a second frequency in a second frequency band;
- and
- a signal coupler to receive the first balanced signal and the second balanced signal, to convert the first balanced signal to a first unbalanced signal during the first mode of operation, and to convert the second balanced signal to a second unbalanced signal during the second mode of operation.
1 more element
A method for controlling an amplifier system having an input and an output, the method comprising:
- receiving a signal at the input;
- amplifying the signal in at least one common amplifier stage to produce an amplified signal;
- further amplifying, in a first amplifier stage, the amplified signal during a first mode of operation to provide a first balanced signal to a first input of a signal coupler;
- further amplifying, in a second amplifier stage, the amplified signal during a second mode of operation to provide a second balanced signal to a second input of the signal coupler, the second amplifier stage being different than the first amplifier stage;
- and
- converting, via the signal coupler, the first balanced signal to a first unbalanced signal during the first mode of operation and the second balanced signal to a second unbalanced signal during the second mode of operation.
3 more elements
Dependencies are inferred from the claim text.