Network Connector Ground Sheet Layout for EMI Shielding
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Solution Overview
Problem
Network connectors experience significant electromagnetic interference (EMI) due to internal and external noise interference, affecting signal quality and compatibility with other devices.
Innovation Solution
A network connector design incorporating a ground sheet with arm portions positioned between circuit contacts to guide and shield electromagnetic interference, combined with a metal casing for enhanced electromagnetic shielding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional network connector design is used, then device complexity is low, but electromagnetic interference resistance is poor
Solution Approach 1:
The patent introduces a ground sheet as an intermediary element between signal transmission lines and the circuit board. This ground sheet acts as a mediator that redirects electromagnetic interference away from sensitive signal paths, thereby improving EMI resistance without fundamentally changing the core connector structure. The ground sheet is positioned to intercept noise before it reaches signal contacts, serving as a protective intermediary layer.
Solution Approach 2:
The patent employs a thin ground sheet film to provide electromagnetic shielding. This thin film structure effectively blocks and redirects electromagnetic interference while adding minimal complexity to the overall connector design. The ground sheet functions as a flexible shielding layer that can be integrated into the existing connector architecture without requiring bulky or complex structural modifications.
2Object-affected harmful factors
If ground sheet with arm portions is added to guide noise, then EMI shielding effectiveness is improved, but device complexity increases
Solution Approach 1:
The ground sheet is segmented into multiple functional portions: a main body portion and multiple arm portions. Each arm portion is specifically positioned to intercept noise from different directions and guide it away from signal contacts. This segmentation allows the ground sheet to address multiple interference paths simultaneously while maintaining a relatively simple overall structure that can be manufactured as a single integrated component.
3Object-affected harmful factors
If metal casing is added for electromagnetic shielding, then EMI protection is improved, but weight and device complexity increase
Solution Approach 1:
The patent combines the ground sheet shielding function with the metal casing structure. The metal casing serves dual purposes: as the structural housing for the connector and as an additional electromagnetic shielding layer. By merging these functions, the design achieves enhanced EMI protection without adding separate heavy shielding components, thereby minimizing weight increase while improving shielding effectiveness.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Effectively reduces EMI interference by guiding unnecessary noise away from signal contacts and providing robust electromagnetic shielding, ensuring signal integrity and compatibility with other devices.
Implementation Method 1
Electromagnetic interference (EMI) is spillover of electromagnetic waves generated by electronic equipment such as computers, smartphones or other electric apparatuses.
Implementation Method 2
By the metal casing covering each component and being electrically connected with the ground sheet, the desirable effect of electromagnetic shielding may be obtained.
Data Source
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AI summary
A network connector includes an insulative seat (10), conductive terminals (20), a control circuit module (30) and a ground sheet (40). The control circuit module (30) includes a circuit board (31) and an electronic element (32). The circuit board (31) includes first contacts (311) and second contacts (312). The insulative seat (10) is fixed on the circuit board (31). Each conductive terminal (20) is electrically connected with each first contact (311). The electronic element (32) is fixed on the circuit board (31) and includes conductive pins (321). Each conductive pin (321) is electrically connected with each second contact (312). The ground sheet (40) is electrically connected to the circuit board (31) and includes a positioning portion (41) and an arm portion (42). The positioning portion (41) is disposed between the first contact (311) and the second contact (312). The arm portion (42) is extended toward the first contact (311) and passes through a position of the first contact.