Redundant Amplifier Strings for Seamless RF Power Switching
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Solution Overview
Problem
High-frequency signal processing systems, such as those used in communication satellites, face challenges in maintaining continuous operation when individual components fail, as they often rely on redundant components that can switch in, but existing redundancy concepts may not efficiently manage power distribution and signal routing, leading to potential signal loss or power reduction.
Innovation Solution
An amplifier arrangement with internal redundancy, featuring a redundancy switching mechanism that divides input power among multiple input connections, allowing selective routing of signals to redundant converters and amplifiers, ensuring continuous operation without affecting input or output signals, and utilizing power dividers and isolators to maintain signal integrity and power levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundant components are added to ensure continuous operation, then reliability is improved, but device complexity increases
Solution Approach 1:
The amplifier arrangement is divided into function strings, where each function string contains a converter unit, amplifier unit, and associated components. This segmentation allows individual function strings to fail independently while others continue operating, and enables modular replacement of failed segments without affecting the entire system.
Solution Approach 2:
Redundant converter units and amplifier units are pre-configured and connected to the system before any failure occurs. The redundancy switching mechanism is pre-established, allowing immediate switchover to redundant components upon failure without requiring complex real-time decision-making or system reconfiguration.
2Reliability
If power is divided among multiple input connections for redundancy, then fault tolerance is improved, but power level per path is reduced
Solution Approach 1:
Multiple input signals are combined at the power divider, and the divided power is distributed to multiple function strings including redundant paths. When switching to redundant components, the power distribution network automatically routes power to the active redundant path, maintaining adequate power levels through the combined input power of multiple connections.
3Reliability
If redundant amplifier units are included, then reliability is improved, but manufacturing cost increases
Solution Approach 1:
The system is segmented into modular function strings that can be manufactured and tested independently. This modular approach allows for standardized production of converter units, amplifier units, and switching mechanisms, reducing overall manufacturing complexity and cost despite the presence of redundant components.
Data Source
AI summary
An amplifier arrangement has a plurality of function strings, which are required for nominal operation. In addition, the amplifier arrangement has a redundancy circuit and a redundant function string including a redundant converter and a redundant amplifier. If a function string is faulty, the redundancy circuit supplies the input signals of the faulty function string to the redundant function string. In addition, a high-frequency system with an inner housing and an outer housing is described, wherein an air gap separates the inner housing and the outer housing from one another so that high-frequency signals can be transmitted via the air gap between the inner housing and the outer housing.