Loop Segment Switching System for RF Reliability
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Solution Overview
Problem
Modern modular radio systems face challenges in efficiently switching between multiple signal sources and sinks due to the need for large, expensive, and unreliable RF matrix switches, which are required for fault tolerance and reconfiguration, especially in military radio systems with diverse frequency and power requirements.
Innovation Solution
A loop segment switching system utilizing a network of switch nodes with three relays each, connected in a continuous loop, allowing for reconfiguration of signal sources and sinks via computer control, reducing the number of required relays and eliminating the need for a large crosspoint matrix switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a large RF matrix switch is used to allow any exciter to connect to any amplifier for fault tolerance, then system reliability is improved, but device complexity and cost increase significantly
Solution Approach 1:
The patent divides the system into N loop segments, where each segment contains one exciter and one amplifier connected through switching relays. This segmentation allows fault isolation and rerouting without requiring a complete N×N matrix switch, reducing complexity while maintaining reliability through localized rerouting capabilities.
Solution Approach 2:
The patent introduces loop switching relays as intermediary components that enable rerouting of signal paths around failed exciters or amplifiers. These relays act as mediators that can redirect signals through alternative paths in the loop, providing fault tolerance without requiring direct access to all possible signal sources and sinks.
2Adaptability or versatility
If a crosspoint matrix switch is implemented to provide reconfiguration capability, then adaptability is improved, but quantity of hardware and cabling increases
Solution Approach 1:
The system is divided into N segments along a loop, with each segment containing minimal switching hardware (three relays per exciter). This segmentation allows reconfiguration capability to be distributed across the system rather than concentrated in a single large matrix, reducing total hardware quantity while maintaining adaptability.
Solution Approach 2:
The patent implements dynamic rerouting capability where the loop configuration can be reconfigured in real-time based on failure detection. The switching relays can dynamically change connection states to reroute signals around failed components, providing adaptability without requiring a static large-scale matrix structure.
3Adaptability or versatility
If multiple banded amplifiers are used to cover different frequency bands, then frequency coverage is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal switching framework that works across multiple frequency bands and amplifier types. The loop switching architecture and control logic are band-agnostic, allowing the same switching mechanism to manage diverse banded amplifiers (HF, VHF, UHF, SHF) without requiring band-specific switching hardware, thus reducing overall system complexity.
Solution Approach 2:
The switching relays and control system act as intermediaries that abstract away the complexity of managing multiple banded amplifiers. The control means can dynamically route signals to appropriate amplifiers based on frequency band requirements without requiring complex direct connections between exciters and all possible amplifiers.
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 provides a cost-effective, space-efficient, and reliable method for rerouting signal sources and sinks, minimizing hardware and cabling needs while maintaining functional capability, applicable to various fields beyond radio systems.
Implementation Method 1
Each switch node, in its basic form, includes a first relay, a second relay, and a third relay
Data Source
AI summary
The loop segment switching system includes a plurality of signal sources, each producing an output signal; and, a plurality of signal sinks, each signal sink normally accepting an output signal from an associated signal source and for increasing the power of the output signal to a desired level. A node switching system of the loop segment switching system includes a plurality of switch nodes and control means. Each switch node, in its basic form, includes a first relay, a second relay, and a third relay. Associated signal sources and amplifiers are normally connected to each other via the third relay. The switch nodes are normally connected in one continuous interconnecting loop from the first relay of a node to the second relay of an adjacent node. The control means is connected to the switch nodes for activating the plurality of switch nodes in order to reconnect signal sources and signal sinks from the normal connection in the event of a failure of a signal source or a signal sink. The reconnections are implemented by disconnecting a segment of the interconnecting loop and using that segment as a connection between the desired signal source and signal sink.