Shielding Plate With Concave Convex Strips For Backplane Crosstalk
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Solution Overview
Problem
Existing backplane connectors face issues with interference and crosstalk due to high-speed transmission of high-frequency signals, which are not adequately addressed by current technologies.
Innovation Solution
A shielding plate with an ingenious grounding structure, featuring alternately arranged concave and convex strips, is integrated with conductive spacers to form a complete shielding structure around differential signal terminals, reducing interference and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-speed transmission of high-frequency signals is used to increase data transmission rate, then productivity is improved, but electromagnetic interference and crosstalk between adjacent differential signal terminals increases
Solution Approach 1:
The shielding plate is segmented into alternately arranged concave strips and convex strips, where each convex strip surrounds a pair of differential signal terminals. This segmentation creates isolated shielding zones for each terminal pair, effectively containing electromagnetic fields and reducing crosstalk between adjacent terminals while maintaining high-speed signal transmission capability.
2Reliability
If a complete shielding structure is formed around differential signal terminals to reduce interference, then reliability is improved, but device complexity increases
Solution Approach 1:
The shielding plate integrates multiple functions into a single component: the convex strips form shielding enclosures around differential signal terminals, the concave strips provide grounding connection paths, and the alternating pattern creates a compact modular structure. This merging reduces the need for separate shielding components while maintaining effective electromagnetic interference protection and grounding.
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
The solution effectively reduces electromagnetic interference and crosstalk between adjacent pairs of differential signal terminals, ensuring stable and reliable grounding connections.
Implementation Method 1
the convex strips protrude from the shielding inner wall to the shielding outer wall; each of the convex strips surrounds a corresponding pair of the differential signal terminals... the grounding pins are arranged in a row... ensuring stable and reliable grounding connections
Data Source
Figure 1~2
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AI summary
The present application discloses a shielding plate (4;4'), a terminal module (100), a high-speed backplane connector and a connector system. The shielding plate (4;4') is provided with alternately arranged concave strips (40;40a;40') and convex strips (41;41a). The high-speed backplane connector provided includes a number of terminal modules (100) and an insulative shell (200) for receiving the terminal modules (100). Each of the terminal modules (100) includes a number of pairs of differential signal terminals (2) arranged in a terminal row, a number of conductive spacers (3;3') arranged in the terminal row at intervals and a shielding plate (4;4'); the shielding plate (4;4') is fixed on one side of a fixed frame (1) and connected with the conductive spacers (3;3'); the pair of differential signal terminals (2) can be shielded, effectively reducing interference and crosstalk between the adjacent pairs of differential signal terminals (2).