Flexible Beam Electrical Connector Reducing Crosstalk
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Solution Overview
Problem
Current electrical connectors face challenges in achieving high-speed data transfer rates with minimal crosstalk and insertion loss, particularly at frequencies above 25 Gb/s, and require complex manufacturing processes involving expensive materials.
Innovation Solution
The design of a flexible beam to flexible beam mating interface in an electrical connector assembly, which reduces stub length and minimizes unwanted insertion loss resonances, using stamped leadframes and simple resin overmolding, allowing for easy manufacturing without expensive conductive coatings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional electrical connectors with rigid structures and complex shielding are used, then shielding effectiveness and structural stability are improved, but manufacturing complexity and cost increase
Solution Approach 1:
The patent employs flexible beam contacts that can elastically deform during insertion and operation, replacing rigid traditional contacts. This dynamic flexibility allows the beam contacts to naturally adapt to mating variations while maintaining electrical connection, eliminating the need for complex rigid shielding structures and reducing manufacturing complexity while preserving shielding effectiveness through the inherent flexibility of the beam design
Solution Approach 2:
The patent changes the material and structural parameters of the contacts from rigid traditional materials to flexible beam structures with specific elastic properties. By optimizing the beam's thickness, width, and material composition, the connector achieves effective electromagnetic shielding through the flexible beam's inherent properties rather than requiring additional complex shielding layers, thus reducing manufacturing complexity
2Ease of manufacture
If stub length is increased in traditional connectors, then manufacturing ease is improved, but insertion loss and signal integrity deteriorate
Solution Approach 1:
The flexible beam contacts are designed with optimized dimensions and material properties that allow them to flex during insertion, effectively reducing the electrical stub length. The beam's elastic deformation creates a more direct electrical path while maintaining manufacturing simplicity, thus reducing insertion loss without complicating the manufacturing process
Solution Approach 2:
The patent optimizes the beam contact's physical parameters including thickness, width, and length to achieve the desired electrical performance. By carefully controlling these parameters, the connector minimizes stub length and associated insertion loss while maintaining ease of manufacture through standard fabrication processes
3Reliability
If expensive conductive coatings and complex materials are used, then electrical performance is improved, but material cost increases
Solution Approach 1:
The patent utilizes the inherent electrical properties of standard metals through optimized geometric parameters of the beam contacts. By carefully designing the beam's cross-section and material composition, achieving excellent electrical performance without requiring expensive conductive coatings or specialized materials, thus reducing material cost while maintaining electrical performance
Solution Approach 2:
The flexible beam contacts are designed to be replaceable and can be manufactured from cost-effective materials. The beam's simple structure allows for economical production through standard metal forming processes, eliminating the need for expensive coatings while maintaining adequate electrical performance and reliability
4Speed
If data transfer rate is increased to above 25 Gb/s, then communication speed is improved, but crosstalk and signal integrity worsen
Solution Approach 1:
The flexible beam contacts provide dynamic electrical connection that adapts to mating variations, maintaining consistent impedance and reducing signal reflections. This dynamic adaptation minimizes crosstalk between adjacent pairs and preserves signal integrity at high data rates above 25 Gb/s, enabling faster communication without harmful interference
Solution Approach 2:
The patent optimizes the beam contact's physical and electrical parameters including conductivity, dimensions, and positioning to minimize crosstalk. By carefully controlling these parameters, the connector achieves excellent signal isolation between pairs, enabling high-speed data transfer above 25 Gb/s with minimal crosstalk and maintained signal integrity
Data Source
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AI summary
Electrical connector assemblies are provided that include electrical connectors having electrical contacts that have receptacle mating ends are provided. The connector housings of the provided electrical connectors include alignment members that are capable of performing staged alignment of components of the electrical connector assemblies. The provided electrical connector assemblies and the electrical connectors provided therein are capable of operating at a data transfer rate of forty gigabits per second with worst case multi-active cross talk that does not exceed a range of about two percent to about four percent.