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US 11,283,416 B2Granted
Loadline switchable push/pull power amplifier
AssigneeSkyworks Solutions, Inc.
InventorsYuan Cao, Yu-Jui Lin, Bo Pan
Life of this patent
Estimating the term…
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 in a first frequency band;
- 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 in a second frequency band;
- a passive signal coupler including a balanced primary section and an unbalanced secondary section, the balanced primary section 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 passive signal coupler including a balanced primary section and an unbalanced secondary section, the balanced primary section having at least one first input to receive the first balanced signal and at least one second input to receive the second balanced signal, and the unbalanced secondary section 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 in a first frequency band to a first input of a balanced primary section of a passive signal coupler;
- further amplifying, in a second amplifier stage, the amplified signal during a second mode of operation to provide a second balanced signal in a second frequency band to a second input of the balanced primary section of the passive signal coupler, the second amplifier stage being different than the first amplifier stage;
- and
- converting, via an unbalanced secondary section of the passive 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.