Adaptive power amplifier
OwnerPaul L. Chan, Jonathan Klaren +2inventors
InventorsPaul L. Chan, Jonathan Klaren, Charles J. Persico, Scott Walter
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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.
Claims36
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.
A method comprising:
- 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.
A processor readable medium containing processor executable instructions for:
- 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.
A processor readable medium containing processor executable instructions 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
- configuring a gain of the power amplifier as a function of the transmitted and reflected power signal levels.
A wireless communication device comprising:
- 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.
An integrated circuit comprising:
- 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.
An apparatus comprising:
- 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.
An apparatus comprising:
- 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.
An apparatus comprising:
- 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.
An apparatus comprising:
- 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.
An apparatus comprising:
- 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.
Dependencies are inferred from the claim text.