Automatic impedance matching using true power information
AssigneeSkyworks Solutions, Inc.
InventorsJames Phillip Young, Joel Anthony Penticoff
Life of this patent
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Abstract
Aspects of this disclosure relate to systems and methods of performing dynamic impedance tuning. Certain aspects may be performed by or include a dynamic impedance matching network. The dynamic impedance matching network can determine a desired output power for a power amplifier, true power information for the power amplifier, and an output power delivered to a load by the power amplifier. In addition, the dynamic impedance matching network can determine whether the output power satisfies the true power information. Responsive to this determination, the dynamic impedance matching network may modify a load line impedance for the power amplifier using an impedance tuning network.
Claims21
(canceled)
A dynamic impedance matching network comprising:
- an impedance tuning network including a plurality of configurable elements;
- a coupler in communication with a first node of the impedance tuning network;
- a detector in communication with the coupler, the combination of the detector and the coupler configured to measure a first power value at the first node of the impedance tuning network;
- and
- an automatic impedance tuner electrically coupled to the detector and configured to operate the plurality of configurable elements, the automatic impedance tuner including an optimization state machine configured to specify one or more configurable elements from the plurality of configurable elements to reconfigure based at least in part on the first power value.
A wireless device comprising:
- a power amplifier module including a power amplifier;
- and
- an impedance matching network including an impedance tuning network having a plurality of configurable elements, a coupler in communication with a first node of the impedance tuning network and the power amplifier in communication with a second node of the impedance tuning network, a detector in communication with the coupler, the combination of the detector and the coupler configured to measure a first power value at the first node of the impedance tuning network, and an automatic impedance tuner electrically coupled to the detector and configured to operate the plurality of configurable elements, the automatic impedance tuner including an optimization state machine configured to specify one or more configurable elements from the plurality of configurable elements to reconfigure based at least in part on the first power value.
A method of performing dynamic impedance tuning, the method comprising:
- determining an expected power for the power amplifier, the expected power calculated based on a collector current provided to the power amplifier, a collector voltage applied to the power amplifier, and an efficiency value for the power amplifier;
- measuring an output power delivered to a load by the power amplifier;
- determining whether the output power satisfies the expected power;
- and
- responsive to determining that the output power does not satisfy the expected power, modifying a load line impedance for the power amplifier using an impedance tuning network.
Dependencies are inferred from the claim text.