Hook and Loop Radiation Shield Attachment for EMI Control
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Solution Overview
Problem
Current radiation shield designs for electronic devices are inadequate in effectively shielding against electromagnetic interference (EMI) and radio-frequency interference (RFI), particularly in high-density systems, due to insufficient shielding effectiveness, high cost, and mechanical constraints, which can lead to performance degradation and thermal issues.
Innovation Solution
A hook and loop attachment mechanism for a radiation shield and heat sink that secures the radiation shield to a support structure without creating holes, using a loop portion attached to the structure and a hook portion attached to the radiation shield, allowing for flexible placement and grounding to enhance shielding effectiveness while maintaining thermal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional radiation shield designs are used, then shielding effectiveness is insufficient, but creating holes in the support structure increases mechanical complexity and structural weakness
Solution Approach 1:
The radiation shield is divided into multiple segments or sections, each with its own attachment mechanism. This allows the shield to be secured effectively without requiring a single complex hole-creation structure, distributing the attachment points and reducing overall mechanical complexity while maintaining shielding integrity.
Solution Approach 2:
An intermediary attachment mechanism (such as a clamp, bracket, or magnetic holder) is introduced between the radiation shield and the support structure. This intermediary component provides the necessary mechanical connection without requiring holes to be created in the support structure, thus reducing mechanical complexity while maintaining shielding effectiveness.
2Object-affected harmful factors
If radiation shields are securely attached to support structures, then shielding effectiveness improves, but thermal performance may deteriorate due to restricted heat dissipation
Solution Approach 1:
The attachment mechanism is designed to provide secure fixation at specific localized points while leaving other areas of the radiation shield free for heat dissipation. This localized attachment approach maintains shielding effectiveness at the attachment points while preserving thermal performance in non-attachment regions.
Solution Approach 2:
The attachment mechanism incorporates dynamic elements such as springs, flexible materials, or adjustable components that allow for thermal expansion and contraction. This dynamic design maintains secure attachment for shielding while accommodating thermal cycles without compromising thermal performance.
3Ease of manufacture
If holes are created in the support structure for attachment, then radiation shield securing is simplified, but trace routing becomes more difficult
Solution Approach 1:
Instead of creating holes in the support structure and then routing traces around them, the design inverts the approach by using surface-mounted attachment mechanisms that attach to the exterior or interior surfaces of the support structure. This eliminates the need for hole creation and preserves clear paths for trace routing.
4Productivity
If high-density component placement is implemented, then system performance increases, but radiating noise levels increase
Solution Approach 1:
The radiation shield is designed to nest around or over high-density component arrangements, providing shielding that conforms to the compact layout. The attachment mechanism is integrated into this nested configuration, allowing effective shielding of densely packed components without interfering with their high-density placement, thus maintaining system performance while reducing radiating noise.
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 provides effective attenuation of electromagnetic waves, reduces mechanical stress on the radiation shield, and allows for easier trace routing on the support structure, improving both shielding and thermal performance without increasing the number of holes or mechanical complexity.
Implementation Method 1
The radiation shield can include a lid portion and radiation shield wall portion
Implementation Method 2
provides effective attenuation of electromagnetic waves
Implementation Method 3
The radiation shield can be a heat sink and more particularly a vapor chamber or cold plate
Implementation Method 4
The radiation shield can be a heat sink and more particularly a vapor chamber or cold plate
Data Source
AI summary
Particular embodiments described herein provide for an electronic device can include a support structure, a radiation source on the support structure, a radiation shield around the radiation source, and a hook and loop radiation shield securing mechanism to removably secure the radiation shield to the support structure, where the hook and loop radiation shield securing mechanism includes a hook portion with a plurality of hooks and a loop portion that includes a plurality of loops, where an angle of a retention hook for each of the plurality of hooks is less than about eighty degrees.