Connector Ground Shielding Assembly for High-Speed Crosstalk
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Solution Overview
Problem
High-speed signal transmission in electronic devices is hindered by significant crosstalk phenomenon due to dense or poorly shielded metal terminal arrangements, which affects signal quality and transmission bandwidth.
Innovation Solution
A connector structure featuring a conductive assembly with metal pieces and a polymer-included conductive component forms a broad equipotential ground region, integrating all ground terminals and creating a shielding structure to inhibit crosstalk, enhancing transmission bandwidth and rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metal terminals are arranged densely to increase transmission capacity, then signal transmission rate is improved, but crosstalk phenomenon increases due to capacitive coupling
Solution Approach 1:
A conductive assembly comprising a conductive component and a metal piece is introduced as an intermediary shielding structure between adjacent signal terminals. The conductive component is electrically connected to the metal piece, which contacts the ground terminal, forming a shielding barrier that intercepts capacitive coupling fields and redirects them to ground, thereby reducing crosstalk while maintaining dense terminal arrangement for high transmission rate
Solution Approach 2:
The conductive assembly is electrically connected to the ground terminal through the metal piece, creating an equipotential shielding structure at ground potential. This equipotential barrier between signal terminals equalizes the electric potential in the shielding region, reducing potential differences that cause capacitive coupling and crosstalk, while allowing dense terminal spacing for high transmission capacity
2Reliability
If shielding structure is added to reduce crosstalk, then signal quality is improved, but device complexity increases
Solution Approach 1:
The shielding function is segmented into modular conductive assemblies, each comprising a conductive component and a metal piece that contacts the ground terminal. This segmentation allows the shielding function to be distributed across multiple locations between adjacent signal terminals, providing targeted crosstalk reduction at specific interference points while maintaining overall structural simplicity and ease of assembly
Solution Approach 2:
The conductive assembly provides localized shielding quality enhancement at critical regions where crosstalk occurs between adjacent signal terminals. The metal piece is positioned to contact the ground terminal at the end of the terminal assembly, creating a localized equipotential region that reduces crosstalk at the most vulnerable interface without requiring comprehensive shielding of the entire connector structure
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 composite conductive assembly effectively reduces crosstalk, improves signal transmission quality, and increases bandwidth and rate by forming a shielding structure that covers the terminal assembly, significantly reducing noise levels and energy loss in high-frequency signals.
Implementation Method 1
a crosstalk phenomenon is mainly caused by capacitive coupling
Implementation Method 2
Each of the at least one metal piece includes at least one spring finger contact
Data Source
AI summary
A connector structure includes an insulated housing, at least one terminal assembly and at least one conductive assembly. The terminal assembly is disposed in the insulated housing. The conductive assembly is disposed at one side of the terminal assembly by crossing over the terminal assembly. The conductive assembly includes at least one metal piece and at least one polymer included conductive component. The polymer included conductive component is used to electrically connect the at least one metal pieces. The metal piece includes at least one spring finger contact, and the spring finger contact is electrically connected to the ground terminal in the terminal assembly. In additional, a terminal assembly structures of connector is also provided.