WiFi Power Amplifier Dynamic Voltage Adjustment
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Solution Overview
Problem
Communications devices experience high power consumption due to providing a fixed maximum supply voltage to WiFi power amplifiers, which affects their endurance, especially in portable products where power efficiency is crucial.
Innovation Solution
A method and apparatus that dynamically adjust the supply voltage for WiFi power amplifiers based on the actual transmit power required for data transmission, using a voltage mapping table to determine the minimum supply voltage necessary for the WiFi communication rate, and switching to maximum supply voltage if data transmission fails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a fixed maximum supply voltage is provided to the WiFi power amplifier, then the transmit power requirement is met, but power consumption increases
Solution Approach 1:
The patent implements dynamic voltage adjustment by switching between multiple voltage levels (first voltage level and second voltage level) based on channel conditions and transmit power requirements. The voltage control module dynamically selects the appropriate voltage level to match the actual transmit power needed, avoiding continuous operation at maximum voltage and thereby reducing power consumption while maintaining adequate transmit power when required.
Solution Approach 2:
The patent changes the supply voltage parameter from a fixed maximum value to a variable parameter that can take different levels (first voltage level for high power, second voltage level for low power). This parameter change allows the system to adapt the voltage to the actual transmit power requirements, reducing energy consumption when full power is not needed while ensuring adequate power when channel conditions require higher transmit power.
2Use of energy by moving object
If a lower supply voltage is used for the WiFi power amplifier, then power consumption is reduced, but data transmission reliability may deteriorate
Solution Approach 1:
The patent employs feedback mechanisms where the processor monitors channel conditions, signal quality, and transmission success. Based on this feedback, the system determines whether to switch between voltage levels. When transmission fails or channel conditions deteriorate, the system switches to the first voltage level to ensure reliable transmission. When conditions are good, it switches to the second voltage level to save power, thus maintaining reliability while optimizing energy consumption.
Solution Approach 2:
The voltage control module automatically adjusts the supply voltage based on real-time transmission conditions without manual intervention. The system self-regulates by monitoring transmission success and channel quality, switching voltage levels autonomously to maintain reliable data transmission while minimizing power consumption. This self-service approach ensures transmission reliability is maintained through automatic adaptation to changing conditions.
3Use of energy by moving object
If dynamic voltage adjustment is implemented, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The voltage control module is designed to perform multiple functions: it controls voltage switching between levels, monitors transmission conditions, determines optimal voltage selection, and manages the power amplifier. By consolidating these functions into a single multi-functional module, the patent reduces the need for separate dedicated circuits for each function, thereby limiting the increase in device complexity while achieving dynamic voltage adjustment and power savings.
Data Source
AI summary
The present invention discloses a communications device and a method and an apparatus for reducing power consumption of a communications device. The method includes: determining a minimum supply voltage that is for a WiFi power amplification circuit at an actual transmit power and that meets a WiFi communication rate; and providing a working voltage to the WiFi power amplification circuit to transmit data, where the working voltage is a voltage that is not lower than the minimum supply voltage and that is lower than a maximum supply voltage. According to the foregoing disclosed content, in the present invention, a supply voltage for a WiFi power amplifier in a communications device can be dynamically adjusted according to a transmit power required by the communications device to send data, so as to reduce power consumption of a communications system.