Adaptive power amplifier
First Claim
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1. A method comprising:
- evaluating a load mismatch criterion relative to a wireless transmitter; and
configuring a power amplifier associated with the wireless transmitter as a function of the load mismatch criterion.
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Abstract
Power detectors sense load mismatch conditions and cause the power output of a power amplifier to be reduced in response to a load mismatch. Transmitted and reflected power measurements are used to calculate a load mismatch criterion. A power amplifier is configured based on the calculated load mismatch criterion. A dual-directional coupler may be used to separate a power signal into transmitted and reflected components. With output power reduced under load mismatch conditions, signal distortion levels may be reduced to acceptable levels.
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Citations
36 Claims
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1. A method comprising:
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evaluating a load mismatch criterion relative to a wireless transmitter; and
configuring a power amplifier associated with the wireless transmitter as a function of the load mismatch criterion. - View Dependent Claims (2, 3, 4)
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5. A method comprising:
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receiving at least one of a transmitted power signal level and a reflected power signal level from a power amplifier associated with a wireless transmitter; and
configuring a gain of the power amplifier as a function of the transmitted and reflected power signal levels. - View Dependent Claims (6, 7)
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8. A processor readable medium containing processor executable instructions for:
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evaluating a load mismatch criterion relative to a wireless transmitter; and
configuring a power amplifier associated with the wireless transmitter as a function of the load mismatch criterion. - View Dependent Claims (9, 10)
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11. A processor readable medium containing processor executable instructions for:
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receiving at least one of a transmitted power signal level and a reflected power signal level from a power amplifier associated with a wireless transmitter; and
configuring a gain of the power amplifier as a function of the transmitted and reflected power signal levels.
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12. A wireless communication device comprising:
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a wireless transmitter;
a power amplifier to output a signal from the wireless transmitter; and
a controller to configure the power amplifier as a function of a load mismatch criterion determined from the signal. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. An integrated circuit comprising:
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a power amplifier to output a signal from a wireless transmitter; and
a controller to configure the power amplifier as a function of a load mismatch criterion determined from the signal. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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26. An apparatus comprising:
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a power amplifier;
a dual-directional coupler to separate a power signal into a transmitted power signal component and a reflected power signal component;
a first power detector to generate a transmitted power signal level;
a second power detector to generate a reflected power signal level; and
a control arrangement to configure the power amplifier as a function of the transmitted and reflected power signal levels.
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27. An apparatus comprising:
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a power amplifier;
a directional coupler to extract a reflected power signal component from a power signal;
a reverse power detector to generate a reflected power signal level; and
a control arrangement to configure the power amplifier as a function of the reflected power signal level.
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28. An apparatus comprising:
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a wireless transmitter;
a power amplifier to output a signal from the wireless transmitter; and
a controller configured to evaluate a load mismatch criterion relative to the wireless transmitter, and configure the power amplifier as a function of the load mismatch criterion. - View Dependent Claims (29)
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30. An apparatus comprising:
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means for evaluating a load mismatch criterion relative to a wireless transmitter; and
means for configuring a power amplifier associated with the wireless transmitter as a function of the load mismatch criterion. - View Dependent Claims (31, 32, 33)
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34. An apparatus comprising:
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means for receiving at least one of a transmitted power signal level and a reflected power signal level from a power amplifier associated with a wireless transmitter; and
means for configuring a gain of the power amplifier as a function of the transmitted and reflected power signal levels. - View Dependent Claims (35, 36)
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Specification