Cable Connector Grounding Plate for High-Frequency EMI Control
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Solution Overview
Problem
Traditional micro coaxial cable connectors have unreliable grounding, leading to poor EMI prevention and signal degradation due to higher frequency signal transmission in applications like GPS.
Innovation Solution
A cable connector assembly with an insulative housing, terminals, a metal cover, and a grounding plate that mechanically and electrically connects with the braiding layers of micro coaxial cables for improved grounding performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If traditional micro coaxial cable connectors are used for high-frequency signal transmission, then signal transmission capability is improved, but grounding reliability deteriorates leading to poor EMI prevention
Solution Approach 1:
The grounding system is segmented into multiple independent grounding paths: grounding wire connecting to grounding pin, braiding layer connecting to grounding plate, and metal cover providing additional shielding. This segmentation ensures that if one path fails, others remain functional, thereby improving grounding reliability for high-frequency signals.
Solution Approach 2:
The grounding plate serves as an intermediary component that mechanically and electrically connects the braiding layers of multiple cables to the grounding pins and metal cover. This intermediary structure provides a stable, reliable grounding connection point that enhances overall grounding performance for high-frequency signal transmission.
2Device complexity
If traditional spring arm grounding structure is used, then device complexity is reduced, but grounding stability deteriorates making EMI prevention difficult
Solution Approach 1:
Multiple grounding functions are merged into a unified grounding plate structure that simultaneously connects to braiding layers, grounding pins, and metal cover. This consolidation provides stable, reliable grounding without requiring complex spring arm mechanisms, thereby maintaining simplicity while improving grounding stability.
Solution Approach 2:
The grounding plate is designed with flexible grounding wires that can dynamically adapt to assembly variations and cable position changes. This dynamic flexibility ensures continuous reliable electrical contact between the braiding layers and grounding system, maintaining grounding stability without complex spring mechanisms.
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
Enhances signal transmission reliability by effectively preventing EMI and ensuring stable grounding, enabling the transmission of high-frequency signals.
Implementation Method 1
The grounding plate mechanically and electrically connecting with the braiding layers of the cables, the grounding pins and the metal cover
Data Source
AI summary
A cable connector (100) includes an insulative housing (30), a number of terminals (70) received in the insulative housing, a metal cover (10) shielding the insulative housing, a number of cables (50) and a grounding plate (90). The terminals include a number of signal pins (70B, 70D) and a number of grounding pins (70A, 70C, 70E). The cables correspondingly connect with the terminals. Each cable includes a central conductor (507) and a braiding layer (503). The grounding plate mechanically and electrically connecting with the braiding layers of the cables, the grounding pins and the metal cover.