External Electromagnetic Shielding Device for 5G IC Testing
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Solution Overview
Problem
Conventional test systems are vulnerable to external electromagnetic interference due to incomplete electromagnetic shielding, affecting stability, accuracy, efficiency, and cost in testing 5G IC chips with millimeter wave frequency bands.
Innovation Solution
An external electromagnetic shielding device is designed with a grid-like conductive cover, a bottom shield, and a rolling module, allowing the device to be positioned outside the test system, providing complete shielding while maintaining heat dissipation efficiency and facilitating operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional electromagnetic shielding structure is used inside the test system, then partial electromagnetic shielding is achieved, but external electromagnetic interference still affects the test system
Solution Approach 1:
The shielding structure is divided into multiple segments: a bottom shield and a conductive cover that can be separately positioned. The conductive cover is further divided into a lateral shield and a top shield, allowing each segment to be independently adjusted to provide comprehensive shielding around the test system.
Solution Approach 2:
The shielding approach transitions from internal placement to external positioning. The conductive cover is disposed outside the test system, creating an external shielding environment that encompasses the entire test system, thereby providing more complete protection against external electromagnetic interference.
2Object-affected harmful factors
If a complete electromagnetic shielding enclosure is constructed, then external electromagnetic interference is blocked, but heat dissipation efficiency deteriorates
Solution Approach 1:
The conductive cover employs a grid-like structure with numerous openings, allowing air circulation and heat dissipation while maintaining electromagnetic shielding effectiveness. The grid pattern provides both shielding functionality and thermal management capability.
Solution Approach 2:
The shielding structure uses different configurations for different regions: the lateral shield provides complete coverage, while the top shield is spaced apart from the bottom shield, creating ventilation spaces. This local variation in shielding density optimizes both electromagnetic protection and heat dissipation.
3Object-affected harmful factors
If a fixed shielding structure is used, then electromagnetic shielding is provided, but ease of operation deteriorates due to inability to adjust shielding coverage
Solution Approach 1:
The linkage unit enables dynamic adjustment of the bottom support position, allowing the conductive cover to be moved between different positions. This dynamic capability permits the shielding structure to adapt to different test scenarios and operational requirements while maintaining electromagnetic protection.
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 solution effectively shields the test system from external electromagnetic interference, ensuring stability, accuracy, and efficiency in testing 5G IC chips while maintaining heat dissipation, thus addressing the limitations of conventional shielding structures.
Implementation Method 1
The conductive cover, the top shield, and the bottom shield jointly define an electromagnetic shielding space
Implementation Method 2
the conductive cover of the external electromagnetic shielding device is in the grid-like shape to effectively maintain a heat dissipation efficiency of the test system
Data Source
AI summary
An external electromagnetic shielding device is provided. The external electromagnetic shielding device includes a bottom shield, a conductive cover being in a grid-like shape and arranged above the bottom shield, and a rolling module. The conductive cover includes a top shield spaced apart from the bottom shield, a lateral shield connected to the top shield, and a plurality of supports that are fixed to the lateral shield. The supports include a bottom support in an annular arrangement, and any two of the supports are spaced apart from each other. The rolling module includes a rolling unit and a linkage unit that is connected to the rolling unit and the bottom support. When the linkage unit is coiled on or released from the rolling unit, the bottom support can be moved to allow the lateral shield to fold or unfold between the bottom shield and the top shield.