Socket Connector Ground Shields for Crosstalk Reduction
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Solution Overview
Problem
The close spacing of electrical contacts and contact pads in socket connectors leads to crosstalk, interference, and noise, making it difficult to effectively isolate adjacent signal pairs with ground shields due to limited space.
Innovation Solution
The use of electrically conductive ground shields with shield slots that interlock with the printed circuit's board slots, providing effective shielding between adjacent signal contacts and pads, thereby reducing crosstalk and improving signal performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If adjacent electrical contacts are arranged relatively close together to reduce connector size, then the connector achieves smaller packaging, but crosstalk and interference between adjacent contacts increases
Solution Approach 1:
Ground shields are introduced as intermediary elements positioned between adjacent signal contacts. These ground shields act as mediators that block electromagnetic interference and crosstalk between neighboring signal contacts, allowing the contacts to be placed closer together without compromising signal integrity.
Solution Approach 2:
The ground shields provide localized shielding specifically at the interfaces between adjacent signal contacts. Rather than requiring uniform spacing throughout the entire connector, the shielding is applied locally where interference occurs, enabling reduced overall connector size while maintaining signal quality at critical interfaces.
2Object-affected harmful factors
If ground shields are added to shield adjacent differential signal pairs, then crosstalk and interference are reduced, but the limited space within the socket makes it difficult to effectively isolate adjacent electrical contacts
Solution Approach 1:
The ground shields are designed to nest within the existing socket structure and around the signal contacts. The shields are positioned to fit into the available space between contacts and the socket housing, effectively utilizing the existing volume without requiring additional external space or increasing overall connector dimensions.
3Area of moving object
If contact pads on the printed circuit are arranged relatively close together, then the printed circuit achieves smaller size, but crosstalk and noise between adjacent contact pads increases
Solution Approach 1:
The ground shields serve as intermediaries that extend to contact the ground contact pads on the printed circuit. This creates a protective barrier between adjacent signal contact pads, allowing them to be placed closer together on the printed circuit while the ground shields prevent electromagnetic coupling and interference between them.
4Volume of moving object
If the socket connector is designed with limited space, then the connector achieves compact dimensions, but it becomes difficult to isolate adjacent electrical contacts with effective ground shields
Solution Approach 1:
The ground shields are positioned in the vertical dimension between the signal contacts and the socket housing, rather than requiring additional horizontal space. By utilizing the vertical space within the existing connector footprint, the shields effectively isolate adjacent contacts without increasing the connector's overall dimensions.
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
This configuration effectively reduces crosstalk and interference, enhancing signal performance by ensuring proper isolation and connection between ground shields and the printed circuit, even in densely packed connector designs.
Implementation Method 1
Ground shields are used in some electrical connectors to shield adjacent differential signal pairs from crosstalk, interference, noise, and/or the like
Data Source
AI summary
A socket connector is provided for mating with a mating connector having a printed circuit. The socket connector includes a housing having a socket. The socket is configured to receive a mating edge of the printed circuit of the mating connector therein. Signal contacts are held by the housing. The signal contacts include mating interfaces arranged in a row within the socket of the housing. Electrically conductive ground shields are held by the housing. The ground shields extend from mating ends to mounting ends. The mating ends of the ground shields extend between adjacent signal contacts. The ground shields include shield slots extending into the mating ends. The shield slots of the ground shields are configured to receive the mating edge of the printed circuit of the mating connector therein to electrically connect the ground shields to the printed circuit.