Transmit Channel Adjustment for RF Load Impedance Variations
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Solution Overview
Problem
Wireless communication terminals often fail to maintain electromagnetic compatibility performance in complex and changeable actual use scenarios due to varying load impedance of power amplifiers, leading to increased receive band noise and harmonic signals, which are not accounted for in standard test specifications.
Innovation Solution
A wireless signal performance adjustment apparatus and method that includes a monitoring unit to detect radio frequency signal issues, a measurement unit to assess load impedance, and an adjustment unit to adjust the transmitting channel by tuning the power amplifier, antenna matching, peak-to-average ratio, or transmitting power to meet performance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless communication terminals operate in complex and changeable actual use scenarios, then the adaptability and versatility improve, but the electromagnetic compatibility performance deteriorates due to varying load impedance
Solution Approach 1:
The patent implements dynamic adjustment of the transmitting channel parameters including power amplifier load impedance, antenna matching, peak-to-average ratio, and transmitting power based on real-time monitoring of radio frequency signals. This dynamic adaptation allows the system to maintain electromagnetic compatibility performance across varying actual use scenarios while preserving adaptability to different operating conditions.
2Reliability
If the transmitting channel is adjusted in real-time to meet performance requirements, then the electromagnetic compatibility performance improves, but the device complexity increases
Solution Approach 1:
The patent employs a feedback mechanism where the transmitting channel is monitored by measuring radio frequency signals, and adjustment information is determined based on the measured load impedance and performance requirements. This closed-loop feedback system enables automatic real-time adjustment of transmitting channel parameters to maintain electromagnetic compatibility performance without requiring complex manual intervention.
3Manufacturing precision
If standard test specifications are followed, then the measurement precision and manufacturing precision improve, but the reliability in actual use scenarios deteriorates due to oversimplified test conditions
Solution Approach 1:
The patent extends beyond standard test specifications by implementing continuous monitoring and adjustment of multiple transmitting channel parameters including load impedance, antenna matching, peak-to-average ratio, and transmitting power. This comprehensive parameter control ensures electromagnetic compatibility performance is maintained not only under standardized test conditions but also across the full range of actual use scenarios with varying conditions.
Data Source
AI summary
Disclosed are a wireless signal performance adjustment apparatus and method, and a wireless communication terminal. The wireless signal performance adjustment apparatus comprises a monitoring unit, a control unit, a measurement unit and an adjustment unit. The monitoring unit is configured to monitor a radio frequency signal of a transmitting channel; the control unit is configured to receive the radio frequency signal from the transmitting channel, control the measurement unit to perform measurement if the radio frequency signal does not meet a performance requirement condition, and determine adjustment information according to load impedance of a power amplifier in the transmitting channel; the measurement unit is configured to measure the load impedance under the control of the control unit; and the adjustment unit is configured to adjust the transmitting channel according to the adjustment information under the control of the control unit, so that the radio frequency signal meets the performance requirement condition.