Shielded Test Enclosure for Radio Wave Interference Control
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Solution Overview
Problem
Existing techniques for testing electronic devices are unreliable and inaccurate due to unintended radio waves entering or reflecting inside the enclosure, causing interference and undesired effects.
Innovation Solution
An enclosure with retractable doors and static shielding materials, including flexible containers and wave dissipating devices, to minimize unwanted electromagnetic interference during testing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional open or simple enclosure structures are used for testing, then ease of operation and device accessibility are improved, but measurement precision deteriorates due to radio wave interference and reflections
Solution Approach 1:
The enclosure is divided into multiple functional zones: an anechoic chamber area for electromagnetic isolation, a transition zone with wave dissipators, and a device placement area. This segmentation allows each zone to address specific interference problems while maintaining overall testing accuracy.
Solution Approach 2:
Wave dissipating materials and structures are introduced as intermediary elements between the external environment and the device under test. These intermediaries absorb and dissipate electromagnetic waves, preventing direct interference with the testing measurements.
2Measurement precision
If shielding materials are added to block radio waves, then measurement precision is improved, but ease of operation deteriorates due to restricted access and placement constraints
Solution Approach 1:
The enclosure incorporates movable and retractable shielding elements that can be dynamically adjusted. This allows the shielding to be deployed when needed for accurate measurements and retracted or adjusted to facilitate device placement and access during testing operations.
Solution Approach 2:
Flexible shielding materials and thin film structures are used in the enclosure design. These flexible elements provide electromagnetic shielding while allowing for adaptable device placement and maintaining operational flexibility compared to rigid shielding structures.
3Measurement precision
If wave dissipating devices are introduced to prevent reflections, then measurement precision is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The wave dissipating devices utilize changes in material parameters (such as permittivity and permeability) to achieve electromagnetic wave absorption. By carefully selecting materials with appropriate parameters, the design achieves effective wave dissipation while maintaining manufacturability through standard material fabrication processes.
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
Provides a reliable and accurate testing environment by limiting the entry and reflection of radio waves, ensuring high-quality functionality and performance assessment of electronic devices.
Implementation Method 1
a flexible container positioned adjacent to the first surface, the flexible container including a plurality of static shielding material pieces
Implementation Method 2
a plurality of static shielding strips, each static shielding strip having a respective first end and a respective second end; wherein respective first ends of a set of strips of the plurality of static shielding strips are connected
Data Source
AI summary
Various devices and techniques help to reduce the entry of unwanted radio waves into an enclosure and reduce the reflection of radio waves inside the enclosure. Such devices and techniques enable a test environment inside the enclosure that provides high-quality functionality and performance testing.