Partitioned RF Shield Enclosure for Radiated Immunity
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Solution Overview
Problem
Conventional RF shields for coaxial cable connectors fail to meet high radiated immunity performance standards, particularly in smaller design envelopes, where increased size reduction and cost optimization are conflicting requirements.
Innovation Solution
A one-piece RF shield enclosure with a bottleneck design, fabricated from conductive material, provides enhanced electromagnetic interference shielding while minimizing size by creating a Faraday cage with internal shielding partitions and ventilation conduits, achieving at least 10 V/m RF immunity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional RF shield designs are used, then manufacturing cost and device complexity are reduced, but radiated immunity performance fails to meet high standards
Solution Approach 1:
The RF shield is divided into multiple partitions that create separate chambers within the enclosure. This segmentation isolates different components and signal paths, preventing electromagnetic interference between them and improving overall radiated immunity performance without requiring a complete redesign of the entire shield structure.
Solution Approach 2:
The patent implements a nested structure where internal partitions are placed within the main RF shield enclosure, creating chambers inside chambers. This nesting approach allows multiple shielding functions to be integrated within a single enclosure volume, enhancing performance while managing complexity.
2Volume of moving object
If the design envelope is reduced to fit smaller products, then product size decreases, but maintaining high RF immunity becomes more difficult
Solution Approach 1:
The patent utilizes the third dimension vertically within the enclosure by implementing multi-level partitions and chambers. This vertical dimensionality allows effective RF shielding and component isolation without increasing the horizontal footprint, enabling small form factor designs to meet high RF immunity standards.
Solution Approach 2:
By nesting partitions and chambers within the limited enclosure volume, the patent maximizes the use of available space. This nested configuration provides effective electromagnetic isolation while maintaining a compact overall product size that fits small design envelopes.
3Adaptability or versatility
If more connectors and indicators are added to electronic devices, then functionality increases, but RF interference and design complexity increase
Solution Approach 1:
The partitioned enclosure creates dedicated chambers for different functional components such as connectors and indicators. This segmentation isolates RF-sensitive components from potential sources of interference, allowing multiple connectors and indicators to be integrated without compromising overall RF immunity performance.
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 RF shield enclosure effectively meets high RF immunity standards while reducing product size and cost, minimizing RF interference through its optimized design and configuration, allowing for more connectors and indicators in electronic devices.
Implementation Method 1
A one-piece RF shield enclosure with a bottleneck design, fabricated from conductive material, provides enhanced electromagnetic interference shielding while minimizing size by creating a Faraday cage with internal shielding partitions
Data Source
AI summary
A radio frequency (RF) shield includes a shield enclosure formed of conductive material that defines and partially encloses an interior cavity. The shield enclosure is configured to receive, within the interior cavity, a shielding partition securable in a fixed position that defines one end of a first chamber within a narrow portion of the shield enclosure. The first chamber provides RF isolation of an RF conductor that is enclosed within the first chamber.