Data Bus Coupler for Analog RF Signature Extraction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current data bus monitoring systems fail to effectively capture and analyze analog electromagnetic signatures, which can indicate network anomalies, cyber intrusions, and component health, limiting their ability to detect cyber threats and maintain system reliability.
Innovation Solution
A data bus coupler that simultaneously monitors digital communication streams and unintended analog electromagnetic signatures, using common mode and differential mode probes to capture RF energy across a broad spectrum, allowing for enhanced anomaly detection and cyber monitoring without degrading communication integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If conventional data bus monitoring systems are used to capture digital communication streams, then communication data can be monitored, but analog electromagnetic signatures indicating network anomalies and cyber intrusions cannot be detected
Solution Approach 1:
The bus coupler is designed to perform multiple functions simultaneously: it monitors digital communication streams through the transformer while also capturing analog electromagnetic signatures through the common mode probe and differential mode probe. This multi-functional approach allows a single device to detect both intended communications and unintended emissions, resolving the contradiction between information completeness and device complexity
Solution Approach 2:
The patent combines multiple monitoring capabilities (digital stream monitoring via transformer, common mode signature capture via common mode probe, and differential mode signature capture via differential mode probe) into a single integrated bus coupler device. This merging of functions into one device allows comprehensive monitoring without proportionally increasing system complexity
2Loss of information
If the bandwidth of the data bus is increased to capture more RF signatures, then more unintentional information can be captured, but the intended communication bandwidth may be degraded
Solution Approach 1:
The patent segments the monitoring function into separate pathways: the transformer handles digital communication streams while the common mode probe and differential mode probe independently capture analog electromagnetic signatures. This segmentation allows each component to operate within its optimized bandwidth without interfering with others, capturing comprehensive information while maintaining communication reliability
Solution Approach 2:
The bus coupler acts as an intermediary device that simultaneously interfaces with the data bus through multiple mechanisms (transformer for digital signals, common mode probe for common mode emissions, differential mode probe for differential mode emissions). This intermediary approach allows broad spectrum capture while maintaining signal integrity by providing isolated pathways for different signal types
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 approach significantly increases the probability of detection and reduces false alarm rates for abnormal electronic behavior, enabling effective cyber intrusion detection and component health monitoring while maintaining data integrity and security.
Implementation Method 1
a transformer coupled to the data bus, with the common mode probe and the differential mode probe
Implementation Method 2
using common mode and differential mode probes to capture RF energy across a broad spectrum
Data Source
AI summary
A device to extract digital and unintended analog signals from a data bus with a non-contact common mode probe and a differential mode probe, each with a low noise amplifier. The analog and digital signals can be monitored contemporaneously.