Electrical Connector Grounding Shield for Crosstalk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electrical connectors face issues with crosstalk between contacts due to their proximity, leading to inadequate shielding performance, especially in high-speed communication applications.
Innovation Solution
An electrical connector design featuring a horizontal PCB with conductive traces and a shielding layer between them, electrically connected to a ground component, which provides effective shielding against electromagnetic interference (EMI) and crosstalk for differential signal pairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If contacts are placed in close proximity to each other, then the connector achieves compact design and higher port density, but crosstalk between contacts increases
Solution Approach 1:
A ground component is introduced as an intermediary element positioned between adjacent contacts. This ground component acts as a mediator that blocks electromagnetic field coupling between neighboring differential signal pairs, thereby reducing crosstalk while allowing contacts to remain in close proximity for compact connector design
Solution Approach 2:
The connector internal structure is segmented into isolated zones by ground components. Each differential signal pair is separated into its own electromagnetic zone by the ground component barriers, preventing interference between segments while maintaining overall compactness
2Object-affected harmful factors
If ground components are added between contacts, then crosstalk is reduced, but device complexity increases
Solution Approach 1:
The ground component serves multiple functions simultaneously: it provides electromagnetic shielding between contacts, establishes a reference potential plane, and contributes to the overall mechanical structure. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity
Solution Approach 2:
The ground component merges several functions into a single element: shielding, grounding reference, and structural support. By combining these functions, the design avoids adding multiple separate components that would increase complexity, achieving crosstalk reduction with minimal structural addition
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
The solution significantly reduces crosstalk and EMI, enhancing the shielding performance and overall electrical connectivity in high-speed communication applications.
Implementation Method 1
a shielding layer positioned between the first and second conductive traces... The shield layer is provided to shield the crosstalk between the contacts
Implementation Method 2
a ground component for grounding... The horizontal PCB has a ground section electrically connecting with shielding layer to the ground component for grounding
Data Source
AI summary
An electrical connector includes an insulative housing (2) defining a port (102, 103) and a contact module (5) inserted into the port. The contact module includes a set of contacts (540, 542) received in the port, a ground component (5323) for grounding and a horizontal PCB (541, 543). The horizontal PCB having a first conductive trace (5410, 5430) disposed at the upper side of the horizontal PCB, a second conductive trace (5411, 5431) disposed at the lower side of the horizontal PCB and a shielding layer positioned between the first and second conductive traces. The first and second conductive traces electrically connect with the set of contacts, respectively. The horizontal PCB has a ground section (5414, 5434) electrically connecting with shielding layer to the ground component for grounding. The shield layer is provided to shield the crosstalk between the contacts that are provided as differential signal pairs.