Envelope Tracking Power Supply Dynamic Configuration
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Solution Overview
Problem
Existing envelope tracking power supplies in wireless communication systems do not efficiently adjust their configuration based on real-time transmit waveform statistics and signal characteristics, leading to suboptimal performance in terms of power conversion efficiency and receive-band noise.
Innovation Solution
An envelope tracking power supply system that dynamically adjusts its configuration based on information received from a modem regarding transmit waveform statistics, such as frequency, bandwidth, and resource block allocation, using a controller to modify parameters like switching frequency, bias current, and filter settings to optimize performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If the envelope tracking power supply uses fixed configuration, then the device complexity is reduced, but the power conversion efficiency deteriorates
Solution Approach 1:
The power supply configuration is made dynamic by allowing the controller to adjust switching frequency, bias current, and filter settings based on real-time transmit waveform statistics received from the modem, enabling the system to adapt to varying signal conditions and optimize power conversion efficiency
Solution Approach 2:
The controller modifies operational parameters including switching frequency, bias current, and filter settings of the power supply based on received signal characteristics, allowing the system to optimize performance for different transmit waveform conditions without increasing fundamental device complexity
2Object-affected harmful factors
If the envelope tracking power supply uses fixed configuration, then the ease of operation is improved, but the receive-band noise increases
Solution Approach 1:
The system implements feedback by receiving transmit waveform statistics from the modem and using this information to adjust power supply configuration, enabling the controller to optimize filter settings and reduce receive-band noise based on actual signal conditions
Solution Approach 2:
The filter settings are made dynamic, allowing the controller to adjust them based on received signal characteristics, thereby reducing receive-band noise adaptively without requiring complex manual configuration
3Loss of energy
If the envelope tracking power supply dynamically adjusts configuration, then the power conversion efficiency is improved, but the device complexity increases
Solution Approach 1:
The power supply system performs self-optimization by having the controller automatically adjust configuration parameters based on transmit waveform statistics received from the modem, eliminating the need for external manual tuning while improving power conversion efficiency
Solution Approach 2:
The controller serves multiple functions by simultaneously managing switching frequency, bias current, and filter settings based on a single input stream of transmit waveform statistics, reducing the need for separate control mechanisms
4Object-affected harmful factors
If the envelope tracking power supply dynamically adjusts configuration, then the receive-band noise is reduced, but the device complexity increases
Solution Approach 1:
The controller adjusts filter settings and other parameters based on received signal characteristics to reduce receive-band noise, achieving noise reduction through parameter optimization without requiring fundamentally complex additional hardware
Data Source
AI summary
Certain aspects of the present disclosure provide methods and apparatus for operating an envelope tracking power supply. The method may include receiving, from a modem of a device, information indicative of a transmit waveform statistic of a signal to be wirelessly transmitted by the device. The method may further include adjusting a configuration of the envelope tracking power supply based on the transmit waveform statistic of the signal.