Shielding Plate Interposed Between Terminal Rows
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Solution Overview
Problem
Current electrical connectors face challenges in transmitting high-speed differential signals effectively due to inadequate shielding and grounding, which affects their compact size and high-frequency performance.
Innovation Solution
An electrical connector design featuring an insulative housing with a shielding plate interposed between terminal rows, including grounding fingers and legs for improved shielding and grounding, allowing for better signal transmission by reducing cross-talk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact connector design is used, then the size is reduced, but the shielding and grounding performance deteriorates
Solution Approach 1:
The shielding plate is nested within the insulative housing and interposed between terminal rows, with grounding fingers integrated into the terminal structure. This nesting approach provides effective shielding and grounding within a compact form factor, resolving the contradiction between small size and reliable electromagnetic interference protection.
Solution Approach 2:
The shielding plate extends in multiple dimensions within the connector housing, creating a three-dimensional shielding structure that maximizes protection against electromagnetic interference while maintaining a compact overall size. The grounding fingers extend between terminal rows in a dimension that optimizes grounding effectiveness without increasing external dimensions.
2Speed
If high-speed differential signal transmission is implemented, then data rate is improved, but signal integrity deteriorates due to cross-talk
Solution Approach 1:
The shielding plate acts as an intermediary element positioned between differential signal terminals. This intermediate shielding structure blocks electromagnetic fields from adjacent signal pairs, preventing cross-talk while allowing high-speed differential signals to transmit with maintained integrity.
3Area of stationary object
If grounding terminals are mixed with signal terminals, then space utilization is improved, but manufacturing complexity increases
Solution Approach 1:
The terminal structure is segmented into contacting portions and board-connecting legs, with grounding fingers as separate elements that can be independently manufactured and then assembled. This segmentation allows for optimized space utilization in the mixed terminal arrangement while simplifying the manufacturing process through modular assembly.
Data Source
AI summary
An electrical connector for mating with a plug and mounting to a printed circuit board, includes an insulative housing defining a rear base and a front mating tongue, two rows of terminals received in the insulating housing and a shielding plate interposed between said two rows of the terminals. The terminals include contacting portions exposed upon opposite surfaces of the front mating tongue and board-connecting legs extending out of the rear base for mounting to the printed circuit board. The terminals are categorized with differential pairs of signal and grounding terminals mixed up with one another for coupling to the plug. The shielding plate includes at least one grounding finger split therefrom and a grounding leg for mounting to the printed circuit board. Each grounding finger is disposed between two adjacent differential pairs and parallel to the contacting portions of said terminals.