Connector Assembly Shield Plate Grounding for Crosstalk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional connectors suffer from reduced shield effectiveness due to a long conductive path from the shield plate to the ground trace, which deteriorates the shielding performance and reliability.
Innovation Solution
The connector assembly design includes a shield plate with a reduced conductive path to a reference potential trace by using a tongue part and reference potential terminal configuration, ensuring both ends of the shield plate are connected to the reference potential trace, and the shield plate is positioned between rows of terminals to prevent crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If only one end of the shield plate is connected to the ground trace via the side wall cover part, then the structure is simple, but the conductive path span becomes long, deteriorating the shield effects
Solution Approach 1:
The shield plate connection is segmented into multiple independent connection points: one end connects to the side wall cover part while the other end connects to the reinforcing bracket, both of which are grounded. This segmentation creates multiple short conductive paths instead of one long path, improving shield effectiveness without excessive complexity
Solution Approach 2:
The grounding path is extended from a single-dimensional connection (one end to ground) to a two-dimensional configuration where both ends of the shield plate are grounded through different structural elements (side wall cover part and reinforcing bracket), creating multiple grounding paths that reduce the effective span
2Area of stationary object
If the shield plate extends in the longitudinal direction of the housing, then it can cover more signal terminals, but the conductive path span to the ground trace increases, reducing shield effectiveness
Solution Approach 1:
The long conductive path is segmented into multiple shorter paths by providing grounding connections at both ends of the shield plate through different structural elements, maintaining shield effectiveness despite the extended longitudinal coverage
Solution Approach 2:
The reinforcing bracket acts as an intermediary grounding element that provides a direct ground connection path for one end of the shield plate, complementing the side wall cover part connection at the other end, thereby maintaining low-impedance grounding across the extended shield structure
Data Source
AI summary
The first connector body includes: a recess mating with the second connector body; a first side wall part extending in the longitudinal direction so as to define both sides of the recess; and a projection extending in the longitudinal direction of the recess so as to mate with a recessed groove of the second connector body, the first terminal includes a first contact part contacting the second terminal in a recessed groove between the projection and the first side wall part, the first connector further includes a shield plate which is held in the center in the width direction of the projection so as to extend in the longitudinal direction, the second reinforcing bracket includes a reference potential connection part connected to a reference potential trace; and a tongue part contacting both ends in the longitudinal direction of the shield plate, and the second connector further includes a reference potential terminal which includes a tail part connected to the reference potential trace along with a contact part contacting the middle of the shield plate in the longitudinal direction.