Crosstalk-Proof Receptacle Connector With Segmented Shielding
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Solution Overview
Problem
High-speed connectors with compactly arranged terminals often experience crosstalk, especially when transmitting high-frequency signals, leading to inefficiencies and potential signal failure due to the antenna effect caused by single, wide metal shielding plates.
Innovation Solution
A crosstalk-proof receptacle connector design featuring multiple insulative boards, sets of terminals, and spaced shielding plates with folding sections that are mounted on opposite sides of the boards, preventing signal interference by interrupting noise and reducing antenna effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a single wide metal shielding plate is used, then signal interference between adjacent terminals is reduced, but antenna effect increases causing additional signal interference
Solution Approach 1:
The single wide metal shielding plate is divided into multiple narrow shielding plates spaced apart from each other. This segmentation reduces the continuous metal surface area, thereby minimizing the antenna effect while maintaining the shielding function against signal interference between adjacent terminals.
Solution Approach 2:
Insulative spacers are introduced as intermediary elements between the narrow shielding plates. These spacers maintain appropriate spacing between the shielding plates, preventing direct contact that could create continuous conductive paths, thus reducing antenna effect while preserving shielding effectiveness.
2Productivity
If terminals are compactly arranged for massive signal transmission, then transmission capacity increases, but crosstalk between adjacent terminals worsens
Solution Approach 1:
Multiple narrow shielding plates are positioned between compactly arranged terminal sets to segment the electromagnetic fields. This segmentation prevents crosstalk between adjacent terminals while allowing the terminals to maintain their compact arrangement for high transmission capacity.
Solution Approach 2:
Shielding is applied locally between specific adjacent terminal sets using spaced narrow shielding plates. This localized shielding approach addresses crosstalk in critical areas without requiring complete shielding of the entire connector, maintaining signal transmission efficiency.
3Object-affected harmful factors
If metal shielding plates are mounted on insulative boards, then shielding effectiveness improves, but device complexity increases
Solution Approach 1:
The shielding structure is segmented into multiple narrow plates mounted on insulative boards, which can be assembled in a modular fashion. This segmentation allows for simplified manufacturing and assembly processes compared to creating and mounting a single large complex shielding structure.
Solution Approach 2:
The insulative boards serve multiple functions: providing mechanical support for the narrow shielding plates, electrically isolating the shielding plates from each other, and facilitating the overall connector structure. This multi-functionality reduces the need for additional components, thereby managing device complexity.
Data Source
AI summary
A crosstalk-proof receptacle connector has multiple insulative boards, multiple sets of terminals, multiple sets of shielding plates and an outer casing. The insulative boards are arranged abreast. The sets of the terminals are mounted respectively in the insulative boards. The terminals of each set are classified into signal terminals and grounding terminals. Each set of the shielding plates is mounted on one of two opposite sides of a corresponding insulative board. The shielding plates of each set are spaced apart without contacting one another. Each shielding plate has multiple folding sections capable of interrupting signal noise. The outer casing covers the insulative boards to combine the insulative boards. The sets of the shielding plates decrease signal interference of the receptacle connector and improve signal transmission efficiency and stability.