Ground Bus Wire Electrical Connector Shielding
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Solution Overview
Problem
Existing electrical connectors in communication systems face challenges with increased contact density and data throughput, leading to negative effects on electrical performance due to signal cross-talk, and current ground shielding methods are costly and complex.
Innovation Solution
A contact assembly with a ground bus wire electrically connected to ground contacts but isolated from signal contacts, providing effective electrical shielding while reducing manufacturing and assembly costs, and including a contact positioner with support walls for signal and ground contacts to enhance connectivity and reduce cross-talk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If contact density and data throughput are increased, then connectivity and data transmission capability are improved, but electrical performance deteriorates due to signal cross-talk
Solution Approach 1:
A ground bus wire is introduced as an intermediary element between signal contacts to provide electromagnetic shielding. The ground bus wire acts as a mediator that blocks electromagnetic interference between adjacent signal contacts, preventing cross-talk while allowing high-density contact arrangement and maintaining electrical performance.
2Reliability
If ground shields are soldered or welded to ground contacts, then electrical shielding is provided, but manufacturing cost and assembly cost increase
Solution Approach 1:
The ground bus wire is merged with the contact assembly structure, allowing multiple ground contacts to be electrically connected through a single continuous wire rather than requiring separate ground shields for each contact. This integration reduces the number of components and eliminates complex soldering or welding operations, lowering both manufacturing and assembly costs while maintaining shielding effectiveness.
Solution Approach 2:
The ground bus wire uses a simple, inexpensive wire structure instead of complex stamped and formed ground shield parts. This simplified approach reduces material costs and manufacturing complexity while providing adequate electrical shielding for the application.
3Reliability
If ground shields are stamped and formed, then electrical shielding structure is created, but manufacturing cost increases
Solution Approach 1:
The invention replaces expensive stamped and formed ground shield parts with a simple wire-based ground bus wire. This wire structure is cheaper to manufacture and provides equivalent electrical shielding functionality, reducing overall component cost while maintaining reliability.
Data Source
AI summary
A contact assembly for an electrical connector includes a contact positioner having contact support walls holding a contact array. The contact array includes signal contacts and ground contacts interspersed with the signal contacts. The signal contacts include mating ends configured to be mated with a mating electrical connector and mounting ends configured to be terminated to a host circuit board. The signal contacts include transition portions between the mating ends and the mounting ends. The ground contacts include mating ends, mounting ends, and transition portions between the mating ends and the mounting ends. The contract assembly includes a ground bus wire extending transversely across the contact array. The ground bus wire is electrically connected to each of the ground contacts. The ground bus wire is electrically isolated from each of the signal contacts.