Inflatable Shielded Enclosure for Lightweight EMI Protection
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Solution Overview
Problem
Existing secure communication enclosures are bulky, heavy, and difficult to deploy, requiring skilled labor and multiple individuals, while also facing challenges in connecting flexible and rigid materials for effective electromagnetic interference (EMI), radio frequency (RF), and infrared protection.
Innovation Solution
Inflatable, lightweight shielded enclosures using inflatable beams and a conductive RF fabric connection system, which can be easily set up and provide 70-80 dB attenuation of 1 GHz signals, reducing weight and deployment complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If rigid metal panels and beams are used to construct secure enclosures, then EMI/RF protection is effective, but the enclosure becomes heavy and requires multiple individuals for construction
Solution Approach 1:
The patent replaces rigid metal panels with flexible shielded fabric that provides equivalent EMI/RF protection. The fabric is stretched over a lightweight frame structure, eliminating the need for heavy rigid construction while maintaining electromagnetic shielding effectiveness through the flexible conductive material.
Solution Approach 2:
The patent introduces inflatable beams that use air pressure to provide structural support instead of rigid metal beams. These inflatable elements can be inflated with air to create the necessary structural form, dramatically reducing weight while maintaining the enclosure's protective function.
2Reliability
If shielded tents with metallic support structures are used, then EMI/RF protection is provided, but the enclosure becomes bulky and requires large transport cases
Solution Approach 1:
The flexible shielded fabric allows the enclosure to be collapsed or folded into a compact configuration for transport, unlike rigid metallic structures that maintain their volume. The fabric can be rolled or folded without compromising its electromagnetic shielding properties.
Solution Approach 2:
The inflatable support structure deflates to a minimal volume for transport and only expands to its functional size when deployed. This pneumatic mechanism allows the same structure to occupy very little space during transport while providing full structural support when inflated.
3Strength
If reinforced attachment points are sewn into shielded material, then the outer shell becomes strong enough to support rigid materials, but the stitching creates holes that reduce attenuation of high frequencies
Solution Approach 1:
The patent replaces mechanical stitching and reinforced attachment points with adhesive bonding or integrated elastic connectors. This substitution eliminates needle holes in the shielded fabric that would compromise high-frequency attenuation, while still providing the necessary structural support through the bonding mechanism.
Solution Approach 2:
The patent uses elastic connectors or adhesive systems that maintain the integrity of the flexible shielded fabric without creating discontinuities. The connection method preserves the continuous conductive path in the fabric, ensuring uninterrupted electromagnetic shielding while providing structural support.
4Adaptability or versatility
If waveguide vents and power panels are attached to flexible shielded material, then connections to external components are made, but the weight and rigidity create tears or distortion in the flexible fabric
Solution Approach 1:
The patent replaces rigid waveguide vents and power panels with flexible connection elements that can be integrated directly into the flexible shielded fabric. These flexible connectors maintain the fabric's continuity and elasticity, preventing tears and distortion while providing the necessary connection pathways for power and signals.
Solution Approach 2:
The patent integrates connection elements directly into the flexible shielded fabric using methods such as conductive adhesive or integrated elastic conduits. This integration ensures that the connection points do not create stress concentrations that would lead to fabric failure, while maintaining both structural integrity and electromagnetic shielding.
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 inflatable enclosures are significantly lighter, easier to transport and deploy, maintaining effective EMI/RF/EMP protection while allowing a single person to set them up, with a weight of approximately 21 pounds and efficient connection systems that prevent signal leakage.
Implementation Method 1
an inflatable, lightweight shielded enclosure that comprises one or more inflatable, lightweight shielded beams arranged to support a shielded material
Implementation Method 2
one inflatable, lightweight shielded connecting trunk for connecting the control system. In either case, connecting trunk may comprise a conductive Radio Frequency (RF) fabric
Data Source
AI summary
An inflatable, lightweight shielded enclosure that includes one or more inflatable, lightweight shielded beams arranged to support a shielded material, and an inflatable, lightweight shielded connection system for connection to a control system is provided along with related methods. The enclosure may have a weight of approximately twenty-one pounds, and provide an attenuation of 70 dB to 80 dB for a 1 GHz signal.