Integrated Faraday Cage for Electromagnetic Testing
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Solution Overview
Problem
Conventional electromagnetic testing devices require large anechoic chambers with significant construction costs, complex installation processes, and high-quality electromagnetic absorbers, which can be costly and limit mobility, while also being prone to measurement errors due to external disturbances and equipment reflections.
Innovation Solution
An integrated Faraday cage system that incorporates electromagnetic absorbers within the measurement device itself, reducing chamber size, installation time, and costs, while maintaining a controlled electromagnetic environment for consistent measurement quality, and allowing for easy mobility and reduced equipment reflections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large anechoic chamber is used for electromagnetic testing, then measurement quality is improved by reducing external disturbances and reflections, but construction costs and installation time increase significantly
Solution Approach 1:
The patent combines the anechoic chamber and measurement equipment into a single integrated device. The electromagnetic testing system includes probes mounted on a support structure that forms an enclosed space with electromagnetic absorbers, eliminating the need for a separate large anechoic chamber while maintaining measurement quality
Solution Approach 2:
The integrated device can be segmented into modular components including the support structure, probes, and electromagnetic absorbers. This allows the system to be transported and assembled in sections, reducing construction complexity compared to a traditional large chamber
2Reliability
If traditional separate anechoic chamber and measurement system are used, then electromagnetic environment is controlled, but mobility and ease of deployment are reduced
Solution Approach 1:
By merging the anechoic chamber functionality into the measurement device itself, the system becomes a self-contained unit that can be easily moved and deployed. The support structure with integrated absorbers and probes creates a portable electromagnetic testing system
Solution Approach 2:
The support structure can be configured in different positions and orientations, allowing the device to adapt to various testing scenarios and locations. The movable support enables dynamic positioning of probes relative to the object under test while maintaining electromagnetic shielding
3Measurement precision
If high-performance electromagnetic absorbers and severe shielding are used, then measurement quality is improved, but costs increase significantly
Solution Approach 1:
Electromagnetic absorbers are placed locally at strategic positions within the integrated device rather than covering large chamber surfaces. This targeted placement of absorbers on the support structure maintains measurement quality while reducing the total quantity of absorptive material required
Solution Approach 2:
The integration of shielding and absorption functions into the compact measurement device reduces the overall quantity of electromagnetic shielding materials needed compared to a large separate chamber, thereby reducing costs while maintaining measurement quality
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
The integrated Faraday cage system provides a compact, cost-effective, and high-quality electromagnetic testing solution that minimizes external disturbances and equipment reflections, ensuring consistent measurement quality and increased mobility without the need for large anechoic chambers.
Implementation Method 1
the support structure (3) includes at least one wall (31) extending in all three dimensions around the support (4) of the object under test when the object under test is placed on the support (4), forming a completely enclosed Faraday cage around the object under test
Implementation Method 2
On its inner side facing the object under test and the support (4), the support structure (3) has anechoic electromagnetic absorbers (5) located in the gaps between the probes (2)... The electromagnetic absorbers (5) prevent the electromagnetic radiation emitted by the probes (2) and/or the electromagnetic radiation emitted by the object under test from reaching the wall(s) (31) and the uprights (30), or attenuate them significantly, in order to prevent or significantly reduce reflections
Data Source
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AI summary
The invention relates to a device for the electromagnetic testing of an object, comprising an array of electromagnetic probes (2), a structure (3) for supporting the probe array (2), and a stand (4) for the object undergoing testing. According to the invention, the structure (3) is closed completely around the stand (4) for the object undergoing testing in the three dimensions of space by means of at least one conductive wall (31) forming a Faraday cage that is provided, on the inner side thereof, with anechoic electromagnetic absorbers (5) in the gaps between the probes (2).