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US 8,427,238 B2Granted
Performance optimization of power amplifier
AssigneeRaytheon Company
InventorsWilliam P. Hull, Jr., James S. Wilson, Robert E. Leoni
Life of this patent
Estimating the term…
Abstract
Aspects of embodiments according to the present invention are directed toward a circuitry and a method to accurately measure the junction temperature of power amplifier and uses the measurement to enable optimization of performance in the presence of a mismatched load via control of the power amplifier such that corrective action to mitigate effects of the mismatched load can be performed.
Claims23
A circuit comprising:
- an amplifier circuit for driving an RF load;
- a sensor for sensing a temperature condition of the amplifier circuit;
- and
- a controller for initiating corrective action and/or feedback of the temperature condition to an external controller in accordance with a load condition of the RF load,
- wherein the sensor is in thermal contact with the amplifier circuit such that the temperature sensed by the sensor correlates to that of at least one transistor of the amplifier circuit, and
- wherein the amplifier circuit comprises a plurality of transistor cells, each of the at least one transistor being included in a corresponding one of the transistor cells, and the sensor is included in a corresponding one of the transistor cells.
3 more elements
A method of operating an amplifier circuit, the method comprising:
- operating the amplifier circuit to drive an RF load coupled to the amplifier circuit;
- sensing a temperature of the amplifier circuit using a sensor, wherein the sensor is in thermal contact with the amplifier circuit such that the temperature sensed by the sensor correlates to that of at least one transistor of the amplifier circuit, and wherein the amplifier circuit comprises a plurality of transistor cells, each of the at least one transistor being included in a corresponding one of the transistor cells, and the sensor is included in a corresponding one of the transistor cells;
- determining a mismatch condition between the RF load and the amplifier circuit in accordance with the temperature of the amplifier circuit;
- and
- compensating for the mismatch condition between the amplifier circuit and the RF load.
2 more elements
Dependencies are inferred from the claim text.