Shielded Connector Terminal Layout for High-Frequency Crosstalk
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Solution Overview
Problem
Conventional connectors face challenges in effectively preventing crosstalk, particularly for high-frequency signals, as ground connection fittings are only arranged between rows of signal terminals, making it difficult to shield against crosstalk between signal terminals in the same row.
Innovation Solution
The connector design includes a recessed groove part with parallel side walls, terminals arranged in facing positions with varying board connecting parts, and a mating shield member positioned between terminal group rows to enhance shielding and reduce crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ground connection fittings are arranged only between rows of signal terminals, then the connector structure is simple, but crosstalk prevention between signal terminals in the same row is insufficient
Solution Approach 1:
The ground connection fittings are segmented into two functional types: those arranged between terminal rows (for row-to-row shielding) and those arranged within the same row at different longitudinal positions (for same-row terminal shielding). This segmentation allows each type to address specific crosstalk scenarios, improving overall crosstalk prevention without requiring a completely complex reconfiguration of the entire grounding system.
Solution Approach 2:
Different ground connection fitting arrangements are applied to different locations: between rows for inter-row shielding and within rows for intra-row shielding. This local differentiation optimizes the shielding effectiveness for each specific crosstalk scenario while maintaining reasonable structural complexity.
2Reliability
If ground connection fittings are added within the same row to prevent crosstalk, then crosstalk prevention improves, but the connector structure becomes more complex
Solution Approach 1:
The ground connection fittings serve multiple functions: they provide electrical grounding, prevent crosstalk between rows, and prevent crosstalk within the same row. By making the grounding system multi-functional, the patent avoids adding separate specialized components for each function, thereby improving signal transmission reliability without proportionally increasing structural complexity.
Solution Approach 2:
Ground connection fittings act as intermediary elements between signal terminals, providing electromagnetic shielding without requiring direct modification of the signal terminals themselves. This intermediary approach allows crosstalk prevention to be achieved through added grounding elements rather than redesigning the signal terminal structure.
3Reliability
If shield members are positioned between terminal rows, then shielding effect enhances, but the connector width increases
Solution Approach 1:
The shielding function is achieved not only by adding width (placing shield members between rows) but also by utilizing the longitudinal dimension (positioning ground connection fittings at different longitudinal positions within the same row). This dimensional approach allows shielding effectiveness to be improved without proportionally increasing connector width.
Data Source
AI summary
The present disclosure includes: a connector body; and a terminal attached to the connector body, the connector being mated with a counterpart connector, wherein the connector body includes a recessed groove part and a pair of side walls extending in a longitudinal direction of the connector body, arranged in parallel demarcating both sides of the recessed groove part, the terminals are arranged with a plurality along each wall forming a pair of terminal group rows in parallel, where ground terminals included in each terminal group row are arranged in mutually facing positions, at least one ground terminal included in each terminal group row includes a board connecting part positioned to the inside of the connector body in the width direction and a board connecting part positioned to the outside of the connector in the width direction, and the board connecting part positioned on the inside is longer than the board connecting part positioned on the outside.