Grounding Structure for High-Speed Electrical Connectors
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Solution Overview
Problem
Existing electrical connectors face challenges in improving resonance and far-end crosstalk performance during high-speed signal transmission, leading to suboptimal signal integrity and reduced data transfer rates.
Innovation Solution
The electrical connector design includes a pair of first grounding contacts and a pair of first signal contacts arranged in a row, with a first conductive member electrically connected to both grounding contacts at multiple locations, enhancing signal transmission by suppressing resonance and far-end crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional grounding structures with single-location connections are used, then device complexity is reduced, but resonance and far-end crosstalk performance deteriorate in high-speed signal transmission
Solution Approach 1:
The grounding structure is segmented into multiple connection points along the conductive member, distributing the grounding function across several locations rather than relying on a single connection point. This segmentation reduces resonance effects and far-end crosstalk by creating multiple reference potential points along the signal path.
Solution Approach 2:
The grounding conductive member extends in multiple spatial dimensions with connections at different locations along its length, transforming a simple point-to-point grounding into a distributed multi-dimensional grounding network that effectively suppresses electromagnetic interference.
2Reliability
If multiple conductive members are used to connect grounding contacts, then resonance and far-end crosstalk are suppressed, but manufacturing complexity increases
Solution Approach 1:
Multiple conductive members are merged into a single integrated grounding structure that provides multiple connection points inherently. This combining approach maintains the resonance suppression benefits while simplifying manufacturing by reducing the number of separate components that need to be assembled.
Solution Approach 2:
The grounding conductive member serves multiple functions simultaneously: it provides electrical grounding, suppresses resonance, reduces far-end crosstalk, and maintains signal integrity, all through a single multi-functional component design.
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 configuration effectively reduces resonance and far-end crosstalk, ensuring higher signal integrity and achieving data transfer rates of 28 Gbps or more across the specified frequency range, meeting QSFP-DD specifications.
Implementation Method 1
there is also a need to adjust resonance
Implementation Method 2
far end crosstalk performances in high-speed signal transmission
Data Source
AI summary
An electrical connector (100) includes an insulative housing (1), a plurality of contacts received in the insulative housing, and a first conductive member (24). The contacts include a pair of first grounding contacts (212) for transmitting grounding signal, and a pair of first signal contacts (211) for transmitting a differential signal. The pair of first grounding contacts and the pair of first signal contacts are arranged in a first row. The pair of first signal contacts is disposed between the pair of first grounding contacts. The first conductive member is electrically connected with both of the first grounding contacts in at least two different locations.