Electrical Connector Terminal Arrangement for Crosstalk Reduction
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Solution Overview
Problem
Existing electrical connectors are insufficient in reducing crosstalk and terminal impedance, which hinders the enhancement of signal transmission speed and integrity for high-speed data transmission.
Innovation Solution
The design includes an electrical connector with alternately arranged ground terminals and differential signal terminal pairs, where each terminal has elastic contact portions and tail portions that extend from the body, with specific width and projection arrangements to form comprehensive shielding and reduce impedance, and an insulating housing with recessed accommodating portions to enhance coupling between signal terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground terminals are made wider to enhance shielding between signal terminals, then shielding effect is improved, but device complexity increases
Solution Approach 1:
The terminal structure is segmented into distinct functional parts: a body portion for signal transmission and elastic contact portions for connection. This segmentation allows the body portion to be optimized for shielding width while keeping the overall structure modular and manageable, resolving the contradiction between enhanced shielding and structural complexity.
Solution Approach 2:
The patent extends the terminal structure in multiple dimensions by adding elastic contact portions that protrude from the body portion. This dimensional extension provides additional shielding capability without requiring excessive width in the primary signal transmission direction, thus improving shielding effect while controlling structural complexity.
2Reliability
If more ground terminals are added to reduce crosstalk, then signal transmission quality is improved, but device complexity increases
Solution Approach 1:
Adjacent elastic contact portions from different terminal columns are merged to form a common ground connection. This merging approach provides comprehensive crosstalk reduction equivalent to having more ground terminals, while actually using fewer terminal structures, thereby improving signal transmission quality without proportionally increasing device complexity.
Solution Approach 2:
The insulating housing acts as an intermediary that positions and supports the terminal columns. It features accommodating portions that precisely locate the terminals and facilitate the merging of elastic contact portions, enabling effective crosstalk reduction through a coordinated arrangement rather than simply adding more ground terminals.
3Speed
If terminal width is increased to reduce terminal impedance, then signal transmission speed is improved, but device complexity increases
Solution Approach 1:
The terminal structure applies local quality differentiation: the body portion has optimized width for signal transmission and impedance control, while the elastic contact portions have extended geometry for connection and additional shielding. This localized optimization achieves reduced terminal impedance and improved signal speed without requiring uniform increases in overall terminal complexity.
Data Source
AI summary
An electrical connector and an electrical connector assembly are disclosed. The electrical connector comprises an insulating housing and a plurality of terminal columns arranged to the insulating housing. Each terminal column comprises a plurality of ground terminals and a plurality of differential signal terminal pairs alternately arranged along a first direction. Each ground terminal has a body portion and two elastic contact portions extending from the body portion and spaced apart from each other. Each signal terminal of each differential signal terminal pair has a body portion and an elastic contact portion extending from the body portion The terminal columns are arranged along a second direction perpendicular to the first direction and are spaced apart from each other, and the differential signal terminal pair of each terminal column corresponds to the ground terminal of the adjacent terminal column in position in the second direction, an orthogonal projection of each differential signal terminal pair of each terminal column along the second direction is positioned within a range which is covered by a width of the corresponding ground terminal of the adjacent terminal column.