Power Amplifier Supply Voltage Switching for Converter Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing supply voltage converters in wireless handheld devices and IoT wireless sensors have poor conversion efficiency, leading to high power consumption and reduced battery life.
Innovation Solution
A power amplifier system that dynamically adjusts the supply voltage based on the activation status of the power amplifier, using a converter to supply either a high voltage level when activated or a lower voltage level when deactivated, thereby optimizing power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a supply voltage converter is used to convert battery voltage to high voltage for power amplifier operation, then the power amplifier can operate at optimal high-power output, but the conversion efficiency is poor and power consumption is high
Solution Approach 1:
The patent implements dynamic voltage adjustment by switching between a first voltage level (higher voltage) when the power amplifier is activated and a second voltage level (lower voltage) when the power amplifier is deactivated. The controller dynamically changes the supply voltage based on the activation status, avoiding continuous high-voltage conversion and reducing energy loss in the converter.
Solution Approach 2:
The patent changes the voltage parameter of the power supply based on the operational state of the power amplifier. By adjusting the supply voltage level (from first voltage level to second voltage level) according to whether the power amplifier is activated, the system optimizes converter efficiency and reduces power consumption during idle periods.
2Speed
If a supply voltage converter continuously maintains high voltage for power amplifier readiness, then the power amplifier can respond quickly when activated, but the converter operates at low efficiency during idle periods
Solution Approach 1:
The system dynamically adjusts the supply voltage level based on real-time activation status of the power amplifier. When activated, the first voltage level is supplied for optimal performance; when deactivated, the second voltage level is supplied to minimize converter energy loss, thus balancing response speed requirements with energy efficiency.
Solution Approach 2:
The controller periodically monitors the activation status of the power amplifier and switches between voltage levels accordingly. This periodic adjustment ensures the power amplifier receives appropriate voltage levels at the right times, maintaining readiness when needed while conserving energy during idle periods.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power consumption and enhances the conversion efficiency of the voltage converter, thereby maximizing the power efficiency of the power amplifier system and extending battery life.
Implementation Method 1
a converter, coupled to the power amplifier, the controller and the power supply, for converting the power supply voltage into a supply voltage with a first voltage level or a second voltage level to supply the power amplifier according to the select signal
Data Source
AI summary
A method of maximizing power efficiency for a power amplifier system comprises obtaining a power supply voltage; determining a first voltage level sufficient for a power amplifier of the power amplifier system to output an output power; determining a second voltage level lower than the first voltage level; determining whether the power amplifier is activated, to generate a determination result; determining to convert the power supply voltage into a supply voltage with the first voltage level or the second voltage level according to the determination result; and supplying the power amplifier with the supply voltage.