High-Speed Connector Partition Walls Reduce Crosstalk
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Solution Overview
Problem
Conventional connectors for high-speed transmission on circuit boards face challenges in reducing crosstalk between signal and ground terminals due to the separation by resin walls, making it difficult to achieve high-speed signal transmission.
Innovation Solution
The connector design incorporates partition walls with varying heights between ground and signal terminals, forming an air layer between curved portions of the terminals and using a fork portion for solder crimping to reduce crosstalk, while maintaining structural rigidity by minimizing the housing opening width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If ground terminals and signal terminals are completely separated by a resin wall, then structural integrity is maintained, but crosstalk between adjacent terminals increases
Solution Approach 1:
The connector is divided into multiple slots, each containing ground terminals and signal terminals arranged alternately. This segmentation allows for controlled spacing and positioning that reduces crosstalk while maintaining structural integrity through the housing design.
Solution Approach 2:
Different regions of the connector have different terminal arrangements. Ground terminals and signal terminals are positioned with specific spacing relationships in different areas to optimize crosstalk reduction locally while maintaining overall structural strength.
2Speed
If terminal spacing is reduced to increase transmission speed, then crosstalk increases, but if terminal spacing is increased, then connector size increases
Solution Approach 1:
The terminal arrangement extends in multiple directions within the slot, utilizing both the length and width dimensions. This multi-dimensional arrangement allows for reduced spacing in one direction while maintaining adequate separation in another, enabling high-speed transmission with minimized crosstalk.
Solution Approach 2:
Multiple sets of ground and signal terminals are nested within the same slot structure, with each terminal pair carefully positioned. This nested arrangement maximizes space utilization while maintaining the necessary spacing for high-speed signal transmission.
3Object-affected harmful factors
If partition walls are made taller to reduce crosstalk, then manufacturing complexity increases, but if partition walls are made shorter, then crosstalk reduction effectiveness decreases
Solution Approach 1:
The partition walls are positioned only where necessary to provide effective crosstalk reduction, rather than extending throughout the entire terminal length. This partial action approach reduces manufacturing complexity while maintaining effectiveness in critical areas.
Solution Approach 2:
The partition wall structure is extracted and positioned only in specific locations where crosstalk reduction is most needed, rather than using a continuous wall structure. This removes unnecessary complexity while maintaining the essential function.
Data Source
Figure 1A
Figure 1B~1C
Figure 1D~2
AI summary
According to an embodiment of the present disclosure, a connector for high-speed transmission is provided. A host connector (CNH) includes: a housing (1H) and a plurality of contacts (3H). The housing (1H) has a plurality of slots (10H). The plurality of contacts (3H) include signal contacts (3H) and ground contacts (3H) and are arranged in the slots (10H) along a Y direction which is a first direction orthogonal to the fitting direction of the connector. Partition walls (15H) are provided between the adjacent contacts (3H) in the slots (10H). The height of the partition walls (15H) between the signal contacts (3H) and the ground contacts (3H) in the fitting direction is lower than the height of other partition walls (15H) in the fitting direction.