Etched Conductor Filter Cable for Distributed EMI Suppression
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Solution Overview
Problem
Current cable solutions, such as shielded cables and coaxial lines, provide electromagnetic shielding but lack filtering capabilities, and existing filtering solutions like magnetic rings and low-temperature co-fired ceramic filters are either ineffective in complex electromagnetic environments or require significant space and weight, limiting their application range.
Innovation Solution
A filter cable design featuring an insulating substrate with a conductor layer having an etching pattern along its axial direction, which functions as a filter circuit to achieve filtering without additional components, allowing for compact, lightweight, and flexible installation in complex electromagnetic environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If shielded cables or coaxial lines are used, then electromagnetic shielding performance is improved, but filtering function is lost
Solution Approach 1:
The patent merges the shielding function and filtering function into a single integrated cable structure. The conductor layer is designed with both shielding capability and etching patterns that provide filtering, eliminating the need for separate filtering components and achieving both functions simultaneously within the cable itself.
Solution Approach 2:
The cable structure is designed to perform multiple functions: electromagnetic shielding through the conductor layer and signal filtering through the etching patterns on the same conductor layer. This multi-functional design allows the cable to address both shielding and filtering requirements in complex electromagnetic environments.
2Object-generated harmful factors
If centralized filtering mode structures (filtering magnetic ring, low-temperature co-fired ceramic filter) are used, then filtering function is improved, but device complexity and installation requirements increase
Solution Approach 1:
The patent extracts the filtering function from separate centralized filtering components and integrates it directly into the cable's conductor layer through etching patterns. This eliminates the need for additional filtering devices and simplifies the overall system structure while maintaining effective filtering performance.
Solution Approach 2:
The cable performs filtering on its own through the etching patterns formed on its conductor layer, without requiring external filtering components. The cable serves both as a transmission medium and as a filtering device, reducing system complexity and installation requirements.
3Object-generated harmful factors
If centralized filtering mode structures are used, then filtering performance is improved, but weight and space requirements increase
Solution Approach 1:
The patent combines the filtering function with the cable structure itself, using the conductor layer with etching patterns to provide filtering without adding separate filtering components. This integration eliminates the additional weight and space that would be required for separate filtering devices.
Data Source
AI summary
A filter cable, which solves the problem that devices which can better cope with various problems in complex electromagnetic environment and have simple and reasonable structural design are lacking in the related art. The filter cable comprises a core wire; the core wire comprises an insulating substrate and a first conductor layer surrounding the insulating substrate; the first conductor layer has a first etching pattern; the first etching pattern is distributed along the axial direction of the filter cable; and the first etching pattern is used to make the filter cable equivalent to a first filter circuit to realize the filtering function.