L-Type Contact High-Speed Connector Crosstalk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing high-speed connector assemblies face challenges in maintaining stable and reliable signal transmission, particularly in reducing crosstalk and signal loss, especially at transmission rates greater than 25Gbps~40Gbps, without redesigning the connection interface between receptacle and plug connectors.
Innovation Solution
The implementation of a high-speed connector assembly featuring receptacle and plug connectors with L-type contact pieces, where each terminal has a straight and extension section, forming double contacts upon engagement to suppress short pile effects and crosstalk, with the receptacle terminals having a first L-type contact piece and plug terminals having a second L-type contact piece, ensuring electrical connections and guiding functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional single contact configuration is used between receptacle and plug terminals, then the connector structure is simple, but crosstalk and signal loss increase at high speed transmission
Solution Approach 1:
The contact structure is segmented into two separate contact pieces (first contact piece in receptacle terminal, second contact piece in plug terminal) instead of a single contact interface. This segmentation creates multiple contact points that reduce signal interference and crosstalk while maintaining transmission reliability at high speeds.
Solution Approach 2:
The contact pieces are configured with L-shaped geometries extending in different spatial dimensions. The first contact piece extends in one direction while the second contact piece extends in another direction, creating contact in multiple dimensional orientations. This dimensional approach reduces electromagnetic interference and crosstalk between adjacent signal pairs.
2Reliability
If L-type contact pieces with double contacts are implemented, then crosstalk and signal loss are reduced, but manufacturing complexity increases
Solution Approach 1:
The L-type contact piece integrates multiple functional elements into a single component: the contact surface, the extending contact section, and the structural support are merged into one monolithic piece. This merging simplifies manufacturing by eliminating the need for separate assembly steps for multiple contact components, while still achieving the double contact configuration.
Solution Approach 2:
The contact pieces utilize spring-loaded elastic deformation to maintain optimal contact pressure and electrical connection. By changing the mechanical parameter of elasticity, the system automatically compensates for manufacturing tolerances and assembly variations, reducing the precision requirements for terminal fabrication while maintaining signal integrity.
3Productivity
If double contacts are formed between terminals, then short pile effect is suppressed and signal transmission is improved, but contact area and device size increase
Solution Approach 1:
The L-type contact pieces concentrate the contact area into localized regions rather than distributing it broadly. The contact surface is positioned at the end of the extending contact section, creating a focused local contact zone. This local quality approach suppresses the short pile effect and reduces crosstalk while minimizing the overall contact area footprint.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A high speed connector assembly is disclosed in this invention, including a receptacle connector and a plug connector. Each receptacle terminal of the receptacle connector disposes a first L-type contact piece, and each plug terminal of the plug connector disposes a second L-type contact piece. When the receptacle connector and the plug connector are electrically engaged, an extension section of the first L-type contact piece is pressed on a straight part of the second L-type contact piece, and an extension part of the second L-type contact piece is pressed on a straight section of the first L-type contact piece. So this engagement can form a double-contacts structure to restrain the short pile effect and reduce the crosstalk and loss at high speed signal transmission. A receptacle connector and a plug connector are also disclosed in this invention.