RF Amplifier Supply Voltage Control Across Different Waveforms
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Solution Overview
Problem
Existing average power tracking techniques fail to maintain target efficiency across different waveforms, leading to inefficiency and power wastage in amplifiers used for radio-frequency signals, as they rely on a single supply voltage for various waveforms, calibrated for a specific waveform only.
Innovation Solution
Implementing waveform-tailored average power tracking, which dynamically adjusts the supply voltage based on the specific waveform and target average output power, allowing different supply voltages for different waveforms to ensure optimal efficiency across various radio-frequency signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single supply voltage is used for various waveforms (calibrated for a specific waveform only), then the amplifier can be simplified in design, but the amplifier efficiency deteriorates across different waveforms
Solution Approach 1:
The patent implements dynamic supply voltage adjustment by introducing a control module that modifies the supply voltage based on detected waveform characteristics and power levels. The supply voltage transitions from a fixed value to a dynamically adjustable parameter, enabling the amplifier to adapt its operating conditions to match different waveform types and power requirements, thereby resolving the contradiction between design simplicity and efficiency.
Solution Approach 2:
The patent changes the supply voltage parameter from a constant to a variable that is adjusted according to waveform characteristics. By modifying this critical parameter based on real-time waveform detection and power level assessment, the system achieves optimal efficiency across diverse waveforms without requiring complete redesign of the amplifier architecture.
2Use of energy by moving object
If waveform-tailored average power tracking is implemented with different supply voltages for different waveforms, then amplifier efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the power tracking functionality into distinct modular components: a waveform detection module, a control module, and a supply voltage adjustment mechanism. This segmentation allows each component to perform its specific function independently, making the overall complex system more manageable and maintainable while achieving waveform-tailored efficiency.
Solution Approach 2:
The patent introduces a control module as an intermediary between the waveform detection stage and the supply voltage adjustment stage. This intermediary processes waveform characteristics and power level information, then generates appropriate control signals for voltage adjustment, thereby coordinating the complex interactions between different subsystems in a structured manner.
3Loss of energy
If average power tracking adjusts supply voltage for different waveforms, then power consumption is reduced, but measurement and control difficulty increases
Solution Approach 1:
The patent implements a feedback mechanism where the system continuously detects waveform characteristics and power levels, compares them against reference values or target conditions, and adjusts the supply voltage accordingly. This closed-loop feedback control enables automatic adaptation to different waveforms while maintaining optimal efficiency, reducing the need for manual measurement and control intervention.
Data Source
AI summary
An apparatus is disclosed for waveform-tailored average power tracking. In an example aspect, the apparatus includes an amplifier, a power converter, and an average power tracking module. The amplifier is configured to amplify radio-frequency signals using a supply voltage. The radio-frequency signals have different waveforms. The power converter is coupled to the amplifier and configured to provide the supply voltage. The average power tracking module is coupled to the power converter and configured to adjust the supply voltage according to the different waveforms to cause the supply voltage to vary across at least two waveforms of the different waveforms for related average output powers.