Method and apparatus for controlling a peak envelope power of a power amplifier
AssigneeMotorola, Inc.
InventorsDanny Thomas Pinckley, Kevin Michayl Laird, Charles N. Lynk, Jr.
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Abstract
An apparatus and method of reducing a peak envelope power of a linear power amplifier (10) amplifying a plurality of channels is provided. The method includes the steps of measuring (104) the peak envelope power of the linear power amplifier, measuring a channel activity level (101) of each channel of the plurality of channels, and, when the peak envelope power exceeds a first threshold, changing (103, 106) at least one parameter of a channel of the plurality of channels having a channel activity level exceeding a second threshold to reduce the peak envelope power.
Claims11
A method of reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such method comprising the steps of:
- measuring the peak envelope power of a composite of at least two of the carriers;
- measuring a channel activity level of one of the at least two carriers;
- and, when the measured peak envelope power exceeds a first threshold, changing a parameter of one of the at least two carriers when the measured channel activity level exceeds a second threshold.
An apparatus for reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such apparatus comprising:
- means for measuring the peak envelope power of a composite of at least two of the carriers;
- means for measuring a channel activity level of one of the at least two carriers;
- and means for changing a parameter of one of the at least two carriers when the measured channel activity level exceeds a second threshold and when the peak envelope power exceeds a first threshold.
A method of reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such method comprising the steps of:
- measuring the peak envelope power of a composite of at least two of the carriers;
- measuring a channel activity level of each of the at least two carriers;
- and, when the peak envelope power exceeds a first threshold, changing a power level of a carrier having a channel activity level exceeding a second threshold to reduce the peak envelope power.
An apparatus for reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such apparatus comprising:
- means for measuring the peak envelope power of a composite of at least two of the carriers;
- means for measuring a channel activity level of each of the at least two carriers;
- and means for changing a power level of a carrier having a channel activity level exceeding a second threshold when the peak envelope power exceeds a first threshold to reduce the peak envelope power.
A method of reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such method comprising the steps of:
- measuring the peak envelope power of a composite of at least two of the carriers;
- measuring a channel activity level of each of the at least two carriers;
- and, when the peak envelope power exceeds a first threshold, changing a phase of a carrier having a channel activity level exceeding a second threshold to reduce the peak envelope power.
An apparatus for reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such apparatus comprising:
- means for measuring the peak envelope power of a composite of at least two of the carriers;
- means for measuring a channel activity level of each of the at least two carriers;
- and means for changing a phase of a carrier having a channel activity level exceeding a second threshold when the peak envelope power exceeds a first threshold to reduce the peak envelope power.
An apparatus for reducing a peak envelope power of a linear power amplifier amplifying a plurality of carriers of a corresponding plurality of channels, such apparatus comprising:
- a peak envelope power detector;
- a channel activity level detector for measuring a channel activity level of each carrier of the plurality of carriers;
- and a peak envelope power controller, coupled to the peak envelope power detector and the channel activity level detector, for changing a parameter of a carrier having a channel activity level exceeding a second threshold when the peak envelope power exceeds a first threshold to reduce the peak envelope power.
Dependencies are inferred from the claim text.