Communication Processor Abnormal Signal Detection for Power Amplifier Protection
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Solution Overview
Problem
Electronic devices, particularly those supporting 5G communication, face damage to power amplifiers due to reflected waves that fail to pass band pass filters when they cannot generate normal signals in the desired frequency band, leading to potential damage and operational issues.
Innovation Solution
Incorporating a coupler electrically connected between the antenna and transceiver, and a communication processor that identifies abnormal signals based on feedback, allowing for controlled transmission power adjustments or setting changes to prevent damage during a set time interval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device transmits signals in the desired frequency band, then communication functionality is improved, but the power amplifier may be damaged by reflected waves that fail to pass the band pass filter
Solution Approach 1:
The system performs preliminary detection of abnormal signals using the coupler before they can cause damage to the power amplifier. By detecting reflected waves or abnormal signal characteristics in advance and controlling transmission power preemptively, the system prevents damage while maintaining normal communication operations.
Solution Approach 2:
The coupler provides feedback about the signal characteristics and reflected waves to the communication processor. This feedback mechanism enables the system to monitor the transmission path continuously and adjust transmission power based on real-time conditions, preventing power amplifier damage while maintaining communication functionality.
2Reliability
If the electronic device detects and controls abnormal signals, then power amplifier protection is improved, but device complexity increases due to additional components
Solution Approach 1:
The coupler serves multiple functions: it enables abnormal signal detection, provides feedback for transmission power control, and monitors reflected waves. By making this single component multi-functional, the system achieves power amplifier protection without proportionally increasing device complexity.
Solution Approach 2:
The communication processor uses the feedback from the coupler to automatically control transmission power and protect the power amplifier without requiring external intervention or complex additional control circuits. The system essentially monitors and protects itself using existing components.
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 solution effectively prevents damage to power amplifiers by adjusting transmission power or settings when abnormal signals are detected, ensuring the electronic device operates within the desired frequency band without causing harm to the power amplifier.
Implementation Method 1
a coupler electrically connected between the antenna and transceiver, and a communication processor that identifies abnormal signals based on feedback
Data Source
AI summary
According to one or more embodiments, an electronic device comprises an antenna, a transceiver configured to generate a first signal which corresponds to a first frequency band and transmit the first signal to the antenna, a coupler electrically connected to the antenna and the transceiver, and a communication processor operatively connected to the transceiver, and the communication processor may be configured to identify whether the first signal is abnormal, at least partially based on at least part of the first signal, wherein the at least part of the first signal is a signal fed back through the coupler, and, based on identifying that the first signal is abnormal, control transmission power of the first signal during a set time interval. Other embodiments may be possible.