Metal Protrusion EMI Shielding for High-Speed Connectors
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Solution Overview
Problem
High-speed transmission interfaces in mobile devices suffer from significant electromagnetic interference (EMI) due to leaking electromagnetic waves, which degrade communication quality, especially with increasing signal frequencies.
Innovation Solution
A high-speed-transmission connection device featuring a metal protrusion structure on either the male or female connector, which fills the gap between connectors and prevents electromagnetic waves from leaking outwardly, utilizing a nonconductive cladding layer and metal fastening elements to enhance contact and reduce EMI.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If high-speed transmission interfaces are used to increase signal frequency, then transmission speed is improved, but electromagnetic interference increases
Solution Approach 1:
The patent applies the principle of converting harm into benefit by using the metal protrusion structure to convert the harmful electromagnetic wave leakage into a beneficial shielding effect. The metal protrusion, positioned at the gap between male and female connectors, reflects and blocks electromagnetic waves that would otherwise leak outward, thereby reducing EMI while maintaining high-speed transmission capabilities.
Solution Approach 2:
The patent implements local quality by adding the metal protrusion structure specifically at the critical gap region between connectors where electromagnetic leakage occurs. This localized modification targets the specific problem area without requiring changes to the entire connector structure, allowing high-speed transmission to continue while providing focused electromagnetic shielding at the leakage point.
2Object-affected harmful factors
If a metal protrusion structure is added to fill the gap between connectors, then electromagnetic interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the electromagnetic shielding function into a separate, independent metal protrusion structure rather than integrating it into the main connector body. This modular approach allows the protrusion to be added as a distinct element that fills the gap between connectors, reducing EMI without requiring complete redesign of the connector assembly.
Solution Approach 2:
The metal protrusion acts as an intermediary element positioned between the male and female connectors. It mediates the electromagnetic field interaction by blocking the path of electromagnetic waves through the gap, providing shielding functionality without requiring direct modification of the connector contact surfaces or internal signal paths.
3Object-affected harmful factors
If the metal protrusion structure is made to closely contact the connector surface, then electromagnetic wave leakage is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies dynamics by designing the metal protrusion structure with flexible or adjustable positioning capabilities. The protrusion can dynamically adapt to slight variations in connector positioning and alignment, maintaining effective gap filling and electromagnetic shielding without requiring extremely tight manufacturing tolerances. This may include elastic materials or mechanical compliance features.
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 reduces EMI by up to 10 dB, improving communication quality in devices like smartphones and computers by preventing electromagnetic wave leakage, even with high-frequency signals, and is applicable to various interfaces such as USB, HDMI, and SATA.
Implementation Method 1
the metal protrusion structure fills a gap between the male connector and the female connector, and prevents electromagnetic waves from leaking outwardly from the gap
Data Source
AI summary
A high-speed-transmission connection device includes a male connector, a cable, and a metal protrusion structure. The cable is connected to the male connector. The metal protrusion structure is formed on an outer surface of the male connector. When the male connector is connected to a female connector, the metal protrusion structure is in close contact with the inner surface of the female connector. The metal protrusion structure fills a gap between the male connector and the female connector, and prevents electromagnetic waves from leaking outwardly from the gap.