RF Amplifier Self-Testing via Switched Local Oscillator
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Solution Overview
Problem
Current radio frequency systems are complex and time-consuming to maintain due to numerous components that can fail, leading to significant downtime and costs when identifying and replacing faulty components.
Innovation Solution
A radio frequency system with integrated local oscillators in amplifier stages allows for self-testing and calibration, using a switch to toggle between operational and testing modes, enabling automatic identification and replacement of faulty components, and utilizing measurement couplers and detectors for data collection to determine settings and calibration data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If manual identification and replacement of faulty components is used, then the system can be maintained, but the maintenance process is time-consuming and causes significant downtime
Solution Approach 1:
The system performs self-diagnosis and self-testing by automatically identifying faulty components through integrated detectors and measurement couplers, eliminating the need for manual identification and reducing downtime while maintaining repair effectiveness
Solution Approach 2:
The system continuously monitors its own performance through detectors and measurement couplers, providing feedback signals that automatically identify faulty components and trigger replacement processes, thereby reducing manual intervention and downtime
2Adaptability or versatility
If multiple different components are used in the radio frequency system, then the system functionality is enhanced, but the complexity of the system increases
Solution Approach 1:
The system integrates multiple functional components (signal generator, amplifier stages with local oscillators, detectors, measurement couplers) into a unified platform where each component serves both operational and diagnostic functions, enhancing versatility while managing complexity through integration
3Ease of repair
If the entire radio frequency system is stopped for component replacement, then the faulty component can be replaced, but the operational capacity is lost
Solution Approach 1:
The system performs preliminary identification and characterization of faulty components before replacement is needed, allowing for planned maintenance operations that minimize disruption to overall system functionality and maintain operational capacity during the repair process
Data Source
Figure 1
AI summary
The invention relates to an RF system. The RF system (12) comprises a signal generator (16) configured to generate an RF signal and an amplifier (26). The amplifier (26) has an amplifier stage (20 - 24), a measurement coupler (40, 46) and a radio frequency output (44). The amplifier stage (20 - 24) comprises a pre-amplifier (30), a local oscillator (32) and a switch (34) that is located between the local oscillator (32) and the pre-amplifier (30). The switch (34)) is configured to forward the radio frequency signal of the signal generator (16) in a first switching position, wherein the switch (34) is configured to forward a local oscillator signal of the local oscillator (32) in a second switching position. The radio frequency system (12) comprises a detector (36), wherein the detector (36) is arranged between the signal generator (16) and the switch (34) and/or wherein the detector (36) is arranged between the switch (34) and the pre-amplifier (30). Further, a control system (10) and a method of self-testing components of a radio frequency system (10) are described.