Receptacle Connector Grounding Structure for Crosstalk Shielding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing connectors suffer from crosstalk between signal terminals due to increased terminal arrangements for high-speed signal transmission, leading to reduced integrity and transmission speed.
Innovation Solution
The implementation of plate-shaped shielding members between rows of signal terminals, along with tie bars and common grounding members, to reduce crosstalk and enhance grounding completeness, allowing for complete shielding and improved signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the arrangement between terminals is increased to reduce connector volume, then the volume of the connector is reduced, but crosstalk between signal terminals is generated
Solution Approach 1:
A grounding member is introduced as an intermediary element between adjacent signal terminals. The grounding member includes a conductive body with extension portions that extend toward the signal terminals, creating a shielding barrier that interrupts the electromagnetic coupling between closely spaced terminals while maintaining compact connector dimensions.
Solution Approach 2:
The grounding member features extension portions with constraining portions at specific locations that are positioned to contact or closely approach the signal terminals. This localized grounding structure provides targeted shielding at critical interfaces where crosstalk occurs, rather than requiring uniform shielding throughout the entire connector volume.
2Ease of manufacture
If a grounding member is assembled from the rear end of the insulating body, then the grounding member can be positioned at the main body portion of the ground terminal, but the distance between the grounding position and the actual contact point is long
Solution Approach 1:
The grounding member is designed with extension portions that extend in multiple directions from the conductive body, including toward the front end of the insulating body. This multi-dimensional extension allows the grounding member to establish electrical connection at multiple points along the ground terminal, effectively reducing the grounding path length while maintaining the rear-assembly manufacturing advantage.
3Reliability
If a transverse bus bar is provided between ground contacts, then grounding connection is achieved, but the length of ground contact must be increased or signal contacts cannot be arranged side by side
Solution Approach 1:
The grounding connection is segmented into multiple independent connection points through the extension portions of the grounding member, rather than requiring a single continuous transverse bus bar. Each extension portion can contact the ground terminal at different locations, providing distributed grounding that eliminates the need for increased ground contact length or complex signal contact routing.
Data Source
AI summary
A receptacle connector comprises a receptacle housing and a set of receptacle terminals comprising ground terminals and signal terminals which are alternately arranged. Each of the ground terminals and each of the signal terminals has a fixed portion which is fixed to the receptacle housing. A common grounding member has protruding connection portions which are respectively positioned toward the ground terminals and transverse bridge portions positioned between the protruding connection portions. The protruding connection portions of the common grounding member are connected to the fixed portions of the ground terminals respectively, and each transverse bridge portion transversely crosses a corresponding signal terminal positioned between corresponding ground terminals without contacting the corresponding signal terminal. A holding base embeds the common grounding member and the fixed portions of the set of receptacle terminals together through injection molding, and the holding base is assembled to the receptacle housing.