Shielded Connector Assembly for High-Frequency EMI Isolation
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Solution Overview
Problem
Conventional connector assemblies lack effective electromagnetic wave shielding performance and are prone to interference between cables and signal pins, especially in high-frequency applications.
Innovation Solution
A connector assembly design featuring a receptacle connector and plug connector with shield cans, insulating members, and a plug shell that enclose signal pins, along with a receptacle base and clip pins, all made of metal or shielding resin, to provide comprehensive electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional connector assemblies are used to connect multiple cables to a circuit board, then connectivity is achieved, but electromagnetic wave shielding performance is insufficient and electromagnetic interference occurs between cables and signal pins
Solution Approach 1:
The shield can is nested within the plug shell, creating a multi-layer shielding structure. The signal pin is enclosed by the shield can, which in turn is enclosed by the plug shell, forming concentric protective layers that effectively block electromagnetic waves while maintaining a compact overall structure
Solution Approach 2:
The connector assembly is divided into distinct functional segments: the signal pin for electrical connection, the shield can for primary electromagnetic shielding, the insulating member for electrical isolation, and the plug shell for structural support and secondary shielding. Each segment performs a specific function, allowing the system to achieve comprehensive electromagnetic protection without excessive overall complexity
2Object-affected harmful factors
If shield cans and insulating members are added to improve electromagnetic shielding, then electromagnetic wave shielding performance improves, but device complexity increases
Solution Approach 1:
The shield can combines multiple functions into a single component: it provides electromagnetic shielding, structural support for the signal pin, and a mounting surface for the insulating member. The plug shell similarly combines shielding, structural support, and cable protection functions, reducing the total number of separate components needed
Solution Approach 2:
The connector assembly uses composite material construction: the shield can is made of conductive material for electromagnetic shielding, the insulating member is made of non-conductive material for electrical isolation, and the plug shell combines structural and shielding properties. This material differentiation allows each component to be optimized for its specific function without requiring complex multi-component assemblies
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 design achieves excellent electromagnetic wave shielding, minimizing interference between cables and signal pins while maintaining connectivity.
Implementation Method 1
a shield can formed to enclose the signal pin such that the other side of the signal pin is exposed downwards and to be electrically spaced apart from the signal pin
Implementation Method 2
a first insulating member coupled to the signal pin to insulate between the signal pin and the shield can
Data Source
AI summary
A connector assembly having a receptacle connector and a plug connector coupled thereto. The plug connector includes: a signal pin having one side in electrical contact with a signal line of a cable and the other side in elastic contact with a clip pin of the receptacle connector; a shield can enclosing the signal pin; a first insulating member coupled to the signal pin; and a plug shell enclosing an upper surface and a side surface of the shield can. The receptacle connector includes: a clip pin having a lower portion contacting a signal pad of a circuit board and an upper portion in elastic contact with the other side of the signal pin; a receptacle base installed on the circuit board and providing a space for the clip pin; and a second insulating member coupled to the clip pin and enclosing the side surfaces of the clip pin.