Bandwidth-Adaptive Power Amplifier Tracking Mode Control
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Solution Overview
Problem
Existing electronic devices face inefficiencies in power control when transmitting signals across varying bandwidths, as current power control modes do not adapt effectively to the selected bandwidths, leading to suboptimal performance, especially when transitioning between low-frequency and high-frequency bands.
Innovation Solution
An electronic device is designed with a communication processor that identifies the transmission bandwidth based on information from a base station and selects between envelope tracking (ET) and average power tracking (APT) modes to optimize power supply to the power amplifier, ensuring efficient signal amplification across different bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a determined power control mode is used regardless of the bandwidth transmitted from the base station, then the power control mode is simple to implement, but it becomes inefficient for the selected transmission bandwidth
Solution Approach 1:
The power control mode is changed from static (determined once) to dynamic (selected based on current bandwidth conditions). The communication processor dynamically selects between first and second power control modes according to the bandwidth information received from the base station, allowing the system to adapt to varying transmission conditions while maintaining implementation simplicity through automated selection logic.
Solution Approach 2:
The system changes the parameter of power control mode based on bandwidth conditions. When the bandwidth exceeds a threshold, the system switches from a first power control mode to a second power control mode, optimizing power amplification efficiency for different bandwidth scenarios without requiring complex manual configuration.
2Adaptability or versatility
If the power control mode is determined to be suitable for a low-frequency band, then it works well for low-frequency transmission, but it becomes difficult to use for high-frequency band transmission
Solution Approach 1:
The system changes the power control mode parameter based on frequency band characteristics. When operating in high-frequency bands with larger bandwidths, the system selects a second power control mode optimized for these conditions, whereas low-frequency bands with smaller bandwidths use a first power control mode, ensuring reliable transmission performance across different frequency ranges.
Data Source
AI summary
Provided is an electronic device that includes a communication processor; a transceiver electrically connected to the communication processor; a first power amplifier electrically connected to the transceiver; a first antenna electrically connected to the first power amplifier; and a first supply adjustor electrically connected to the communication processor and the first power amplifier. The communication processor can be set to perform a first determination about whether a carrier bandwidth part of a first signal transmitted through the first antenna exceeds a first threshold value, perform a second determination about whether the power of the first signal exceeds a second threshold value, select a first tracking mode as an envelope tracking mode or an average power tracking mode on the basis of at least a portion of the first determination and the second determination, and control the first supply adjustor using the selected first tracking mode.