Modification of phase component of error signal to reduce variation of phase component of output signal of power amplifier
AssigneeMotorola, Inc.
InventorsAndrew Merritt Khan, George Francis Opas
Life of this patent
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Abstract
System (100) is coupled with power amplifier (106). Generation component (166) generates error signal (110) based at least in part on an input signal (144) for the system (100). The error signal (110) includes a phase component. The input signal (144) includes an envelope component. Modification component (130) modifies the phase component of the error signal (110) in response to the envelope component of the input signal to reduce variation of a phase component of the power amplifier output signal (194).
Claims22
A method, comprising the steps of:
- generating an error signal based at least in part on an input signal for a system that is coupled with a power amplifier, wherein the error signal includes a phase component, wherein the input signal includes an envelope component;
- and
- modifying the phase component of a signal based on the error signal in response to the envelope component of the input signal to reduce variation of a phase component of an output signal from the power amplifier.
A method, comprising the steps of:
- generating an error signal based at least in part on an input signal for a system that is coupled with a power amplifier, wherein a signal based on the error signal includes a modified phase component, wherein the input signal includes an envelope component, wherein the power amplifier outputs an output signal that is based on the error signal having the modified phase component;
- and
- promoting approximate maintenance of a predetermined phase margin of a feedback signal when the feedback signal is compared to a signal based on the input signal by modifying the phase component of a signal based on the error signal in response to the envelope component of the input signal to approximately compensate for a predicted modification by the power amplifier of a phase component of the output signal.
A system that is coupled with a power amplifier, comprising:
- a generation component that generates an error signal based at least in part on an input signal for the system, wherein the error signal includes a phase component wherein the input signal includes an envelope component;
- and
- a modification component that modifies the phase component of a signal based on the error signal in response to the envelope component of the input signal to reduce variation of a phase component of an output signal from the power amplifier.
A system that is coupled with a power amplifier, comprising:
- a generation component that generates an error signal based at least in part on an input signal for the system, wherein a signal based on the error signal includes a modified phase component, wherein the input signal includes an envelope component, wherein the power amplifier outputs an output signal that is based on a signal based on the error signal having the modified phase component;
- and
- a modification component that promotes an approximate maintenance of a predetermined phase margin of a feedback signal when the feedback signal is compared to a signal based on the input signal by modifying the phase component of a signal based on the error signal in response to the envelope component of the input signal to approximately compensate for a predicted modification by the power amplifier of a phase component of the output signal.
Dependencies are inferred from the claim text.