Temperature-Based Power Management for Reduced Interference
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Summary
Problems
Existing methods for reducing power consumption in electronic devices, such as tuning the time constant or using an envelope tracking modulator, have limitations, including insufficient power reduction and increased interference or high costs.
Innovation solutions
A method and apparatus that detect the temperature of an electronic device's amplification unit and adjust its power usage by transitioning between different control values, using a temperature sensing unit and lookup tables to optimize power consumption and minimize interference.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If the method of controlling a VCC bias according to power levels is used to reduce power consumption, then power consumption is reduced, but interference with adjacent channels increases
Why choose this principle:
The patent changes the control parameter from power level-based VCC bias control to temperature-based VCC bias control. By monitoring temperature rather than power levels, the system can reduce power consumption through temperature-dependent bias adjustment without directly causing adjacent channel interference, as temperature is a physical state parameter that does not directly affect signal spectral characteristics.
Principle concept:
If the method of controlling a VCC bias according to power levels is used to reduce power consumption, then power consumption is reduced, but interference with adjacent channels increases
Why choose this principle:
The patent implements a feedback mechanism where the temperature of the power amplifier is continuously monitored and used to adjust the VCC bias. This closed-loop temperature feedback allows the system to dynamically optimize power consumption based on actual thermal conditions while maintaining signal integrity, preventing the interference issues that occur with open-loop power level-based control.
Application Domain
Data Source
AI summary:
A method and apparatus that detect the temperature of an electronic device's amplification unit and adjust its power usage by transitioning between different control values, using a temperature sensing unit and lookup tables to optimize power consumption and minimize interference.
Abstract
A method for use in an electronic device having an amplification unit, the method comprising: detecting a current temperature of the electronic device when the amplification unit is in a first state in which the amplification unit is operated in accordance with first control value; detecting whether the current temperature meets a threshold; identifying a second control value that is lower than the first control value, when the current temperature meets the threshold; and changing an amount of power supplied to the amplification unit by transitioning the amplification unit into a second state in which the amplification unit is operated in accordance with the second control value.