Ground Coupling Bar for Cross Talk Reduction
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Solution Overview
Problem
High-speed electrical connectors face significant challenges with signal integrity due to cross talk between closely spaced signal conductors, which increases with miniaturization and high-speed signal transmission, necessitating improved designs that reduce interference and allow for easy assembly and customization of grounding provisions.
Innovation Solution
The electrical connector assembly incorporates a housing with slots for a ground coupling bar that can be inserted longitudinally, providing additional grounding contacts and allowing for customizable placement, thereby shifting the frequency of cross talk resonance and enhancing contact between ground and signal conductors, while also featuring a shouldered top end for polarization and resilient fixation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If signal conductors are closely spaced to increase connector density, then the number of signal pairs per connector is improved, but cross talk between adjacent signal conductors increases
Solution Approach 1:
Ground coupling bars are introduced as intermediary elements between adjacent ground conductors. These bars act as mediators to strengthen the grounding system, providing additional pathways for interference currents and improving the overall grounding effectiveness, thereby reducing cross talk between closely spaced signal conductors
Solution Approach 2:
The solution transitions from a two-dimensional planar arrangement of ground conductors to a three-dimensional grounding structure by inserting ground coupling bars that extend perpendicular to the conductor plane. This vertical dimension adds additional grounding paths and enhances the shielding effect without increasing the footprint area
2Reliability
If ground conductors are added to reduce cross talk, then signal integrity is improved, but device complexity increases
Solution Approach 1:
The grounding system is segmented into modular components: individual ground conductors embedded in the housing and separate ground coupling bars that can be independently inserted and removed. This segmentation allows for flexible configuration and simplifies assembly by enabling the grounding elements to be added or modified without replacing the entire connector
Solution Approach 2:
The grounding configuration is made dynamic and adaptable through the removable ground coupling bars. Users can selectively insert or remove bars depending on the specific application requirements, allowing the connector to be customized for different signal integrity needs without being locked into a fixed complex structure
3Ease of operation
If ground coupling bars are made removable for customization, then ease of assembly is improved, but contact reliability may worsen
Solution Approach 1:
The ground coupling bars are extracted as separate removable components from the integrated housing structure. This extraction enables easy insertion and removal through access slots in the housing, while the bars are designed with features like contact springs and resilient elements to ensure reliable electrical contact when installed
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
This design effectively reduces cross talk between adjacent differential signal pairs, allowing for a large number of signal pairs with improved signal integrity and ease of assembly, with the ground coupling bar's customizable placement and resilient fixation contributing to reduced interference and enhanced shielding.
Implementation Method 1
the frequency of a cross talk resonance may be shifted by establishing an additional contact to ground for the ground conductors
Implementation Method 2
Cross talk may be reduced by separating adjacent signal conductors or adjacent differential signal pairs with ground conductors
Data Source
AI summary
An electrical connector module including a housing and an array of electrical contacts within the housing. The electrical contacts include a plurality of signal conductors and a plurality of ground conductors. Ground coupling bars are used with at least two contact portions for contacting ground conductors. The connector includes slots enabling insertion of the ground coupling bar in a longitudinal direction of the ground coupling bar.