Crosstalk-proof connector with segmented shielding plates
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Solution Overview
Problem
High-speed connectors in servers experience crosstalk issues due to the antenna effect caused by continuous metal shielding paths, leading to inefficient and unstable signal transmission.
Innovation Solution
A crosstalk-proof receptacle connector design featuring insulative boards with signal and grounding terminals, multiple shielding plates with current-path-interrupting holes to break the diagonal path and reduce antenna effects, and an outer casing to combine the boards, effectively suppressing crosstalk by shortening current paths on the shielding plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If metal shielding plates are used to prevent crosstalk between terminals, then signal interference between adjacent terminals is reduced, but the continuous metal path creates antenna effect causing additional signal interference
Solution Approach 1:
The shielding plate is segmented by introducing multiple slots that divide the continuous metal surface into isolated sections. This segmentation breaks the current path while maintaining the shielding function, preventing the antenna effect caused by continuous metal paths.
Solution Approach 2:
The shielding plate has different properties in different regions: areas between slots provide shielding against crosstalk, while the slots themselves create electrical isolation. This local differentiation allows the plate to simultaneously prevent crosstalk and eliminate antenna effects.
2Object-affected harmful factors
If shielding plates with sufficient width and length are used to cover terminals, then crosstalk prevention is improved, but the long diagonal path allows electric charges to run causing antenna effect
Solution Approach 1:
Multiple slots are introduced into the shielding plate to segment the metal surface. This divides the long diagonal path into multiple short segments, preventing continuous current flow while maintaining adequate shielding coverage across the terminal area.
Solution Approach 2:
The slots act as intermediary elements that interrupt the current path. These non-conductive gaps serve as mediators between adjacent metal regions, blocking charge flow while allowing the shielding plate to maintain its overall shielding function.
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
Significantly reduces crosstalk and improves signal transmission efficiency and stability by interrupting the antenna effect, as demonstrated by comparative crosstalk tests showing reduced interference between adjacent terminals.
Implementation Method 1
the metal shielding plate 92 is a single piece with sufficient width and length and therefore provides a sufficient long and diagonal path P0 to allow electric charges to run thereon, which causes antenna effect and additional signal interference
Data Source
AI summary
A crosstalk-proof receptacle connector includes: multiple insulative boards arranged abreast; multiple sets of terminals mounted respectively in and corresponding to the insulative boards, and each set including signal terminals and grounding terminals; multiple shielding plates corresponding to the insulative boards and corresponding to the sets of the terminals, each shielding plate mounted on one of two opposite sides of a corresponding insulative board and having multiple current-path-interrupting holes defined through the shielding plate and kept hollow without being inserted by objects, and each shielding plate connected to the grounding terminals of a corresponding set of the terminals; and an outer casing covering the insulative boards to combine the insulative boards. The crosstalk-proof receptacle connector suppresses crosstalk and improves efficiency and stability of signal transmission.