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US 2014/0191807 A1Published application
Systems and methods for biasing amplifiers with adaptive closed loop control
AssigneeAviat U.S., Inc.
InventorsYouming Qin, Frank Matsumoto, Andres Goytia, Cuong Nguyen
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Abstract
Various embodiments described herein provide systems and methods for improved performance for power amplifiers, particularly GaN power amplifiers. According to some embodiments, a power amplifier (e.g., GaN power amplifier) utilizes an adaptive closed loop control of the drain current of the power amplifier to achieve improved performance for the power amplifier.
Claims21
A system comprising:
- a power amplifier having an output signal and a drain current;
- a power amplifier calibration module configured to determine an optimized quiescent drain current value for the drain current while the power amplifier is operating under an operational parameter, and determine a set of calibrated drain current values for the drain current, the set of calibrated drain current values being calibrated for a set of power levels for the output signal while the power amplifier is operating under the operational parameter;
- a storage module configured to store the optimized quiescent drain current value and the set of calibrated drain current values as saved drain current data;
- and
- a power amplifier operation module configured to compare the drain current to a particular drain current value in the saved drain current data, determine whether the comparison satisfies a condition, and adjust the drain current based on the particular drain current value if the condition is determined to be satisfied.
2 more elements
A method comprising:
- determining an optimized quiescent drain current value for a drain current of a power amplifier while the power amplifier is operating under an operational parameter;
- storing the optimized quiescent drain current value as saved drain current data;
- determining a set of calibrated drain current values for the drain current, the set of calibrated drain current values being calibrated for a set of power levels for an output signal of the power amplifier while the power amplifier is operating under the operational parameter;
- storing the set of calibrated drain current values in the saved drain current data;
- comparing the drain current to a particular drain current value in the saved drain current data;
- determining whether the comparison satisfies a condition;
- and
- adjusting the drain current based on the particular drain current value if the condition is determined to be satisfied.
5 more elements
A system comprising:
- means for determining an optimized quiescent drain current value for a drain current of a power amplifier while the power amplifier is operating under an operational parameter;
- means for storing the optimized quiescent drain current value as saved drain current data;
- means for determining a set of calibrated drain current values for the drain current, the set of calibrated drain current values being calibrated for a set of power levels for an output signal of the power amplifier while the power amplifier is operating under the operational parameter;
- means for storing the set of calibrated drain current values in the saved drain current data;
- means for comparing the drain current to a particular drain current value in the saved drain current data;
- means for determining whether the comparison satisfies a condition;
- and
- means for adjusting the drain current based on the saved drain current data if the condition is determined to be satisfied.
5 more elements
Dependencies are inferred from the claim text.