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US 10,411,662 B2Granted
Power amplification system with reactance compensation
AssigneeSkyworks Solutions, Inc.
InventorsAleksey A. Lyalin, Taesong Hwang, Russ Alan Reisner, Nicholas Quinn Muhlmeyer
Life of this patent
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Abstract
Power amplification system is disclosed. A power amplification system can include a Class-E push-pull amplifier including a transformer balun. The power amplification can further include a reactance compensation circuit coupled to the transformer balun. In some embodiments, the reactance compensation circuit is configured to reduce variation over frequency of a fundamental load impedance of the power amplification system.
Claims20
A power amplification system comprising:
- a Class-E push-pull amplifier including a transformer balun, the transformer balun having a first coil and a second coil, the first coil including a first tap coupled to a first differential path of the Class-E push-pull amplifier, a second tap coupled to a second differential path of the Class-E push-pull amplifier, and a third tap coupled to a supply voltage;
- and
- a reactance compensation circuit coupled to the transformer balun, the reactance compensation circuit being configured to reduce variation over frequency of a fundamental load impedance of the power amplification system.
A radio-frequency module comprising:
- a packaging substrate configured to receive a plurality of components;
- and
- a power amplification system implemented on the packaging substrate, the power amplification system including a Class-E push-pull amplifier including a transformer balun, the transformer balun having a first coil and a second coil, the first coil including a first tap coupled to a first differential path of the Class-E push-pull amplifier, a second tap coupled to a second differential path of the Class-E push-pull amplifier, and a third tap coupled to a supply voltage, the power amplification system further including a reactance compensation circuit coupled to the transformer balun, the reactance compensation circuit being configured to reduce variation over frequency of a load impedance of the power amplification system.
A wireless device comprising:
- a transceiver configured to generate an input radio-frequency signal;
- a front-end module in communication with the transceiver, the front-end module including a packaging substrate configured to receive a plurality of components, the front-end module further including a power amplification system implemented on the packaging substrate, the power amplification system configured to amplify the input radio-frequency signal to generate an output radio-frequency signal, the power amplification system including a Class-E push-pull amplifier including a transformer balun, the transformer balun having a first coil and a second coil, the first coil including a first tap coupled to a first differential path of the Class-E push-pull amplifier, a second tap coupled to a second differential path of the Class-E push-pull amplifier, and a third tap coupled to a supply voltage, the power amplification system further including a reactance compensation circuit coupled to the transformer balun, the reactance compensation circuit being configured to reduce variation over frequency of a load impedance of the power amplification system;
- and
- an antenna in communication with the front-end module, the antenna configured to transmit the output radio-frequency signal.
1 more element
Dependencies are inferred from the claim text.