EMP Protective Enclosure with Transparent Mesh and Conductive Hinge
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Solution Overview
Problem
Existing mobile device protective enclosures fail to provide comprehensive protection against electromagnetic pulses (EMPs) while maintaining functionality, as they often leave portions of the case radio-transparent, making devices susceptible to EMP damage during high-intensity events like nuclear detonations.
Innovation Solution
A protective enclosure for mobile devices that incorporates a modified Faraday cage design with an electrically-conductive hinge, a metallic mesh top cover transparent to visible light but attenuating EM radiation, and an EMP protection circuit, allowing for communication and charging while providing EMP shielding through a passive repeater and EMP limiter.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sealed Faraday cage is used to protect the device from EMP, then EMP protection is improved, but device accessibility and functionality are worsened
Solution Approach 1:
The enclosure transitions from a static sealed state to a dynamic openable state. The bottom portion and top cover can be separated, allowing the device to be accessed while maintaining EMP protection when closed. This dynamic configuration resolves the contradiction by providing both protection and accessibility at different times.
Solution Approach 2:
The enclosure is divided into separable components (bottom portion and top cover) rather than being a single sealed unit. This segmentation allows the device to be accessed by opening the enclosure while still providing EMP protection when closed, resolving the contradiction between protection and accessibility.
2Ease of operation
If a radio-transparent portion is left in the case for device functionality, then ease of operation is improved, but EMP protection is worsened
Solution Approach 1:
The enclosure maintains a closed, protective configuration during normal operation, with the device accessed by opening the enclosure rather than having permanent openings. This dynamic approach allows full EMP protection while maintaining device functionality when needed.
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 enclosure effectively shields mobile devices from EMPs, enabling them to function before, during, and after an attack by dissipating induced currents and attenuating EM radiation, while allowing user access to essential features like display visibility and touchscreen functionality.
Implementation Method 1
a powerful EMP wavefront will harmlessly induce high currents in the surface of the Faraday cage, which will be harmlessly dissipated as heat as they flow about the cage's surface
Implementation Method 2
high currents in the surface of the Faraday cage, which will be harmlessly dissipated as heat
Implementation Method 3
A Faraday cage is simply a sealed conductive box with the device to be protected located inside of it. Electromagnetic waves cannot penetrate metal
Data Source
AI summary
A Faraday cage enclosure for a mobile device with a portion that aligns with a display of the mobile device simultaneously substantially attenuate EM radiation to non-damaging amplitudes and is transparent to visible light in an optical spectrum, an EMP protection circuit electrically connected between the external charging and data port and the internal charging and data port, and a passive repeater configured to EM-couple with an antenna of the mobile device and relay signals to and from the antenna of the mobile device.