High-Speed Electronic Connector EMI Shielding
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Solution Overview
Problem
Current electronic connectors face limitations in high-speed data transfer rates and provide insufficient electromagnetic interference (EMI) shielding, particularly in hybrid devices like touch-screen tablets and keyboards, which are prone to electromagnetic interference and require labor-intensive manufacturing processes.
Innovation Solution
The development of an electronic connector system featuring a printed circuit board enclosed within a housing, with a group of electrical contacts on a nose portion and a ground bar, along with an outer shell and receptacle that includes an EMI plate for improved EMI shielding and higher data transfer speeds, allowing for secure and efficient communication between devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional connector designs are used, then manufacturing processes are labor-intensive, but data transfer speeds are limited and EMI shielding is insufficient
Solution Approach 1:
The connector is divided into distinct functional segments: the housing structure, the PCB assembly with electrical contacts, the ground bar, and the EMI shielding plate. Each segment performs a specific function and can be optimized independently. The EMI plate is segmented into multiple sections that can be positioned to provide comprehensive shielding around the electrical contacts.
Solution Approach 2:
The EMI shielding plate acts as an intermediary element between the electrical contacts and the external environment. It physically intervenes to block electromagnetic interference from reaching the sensitive electrical contacts, while the ground bar serves as an intermediary conductive path to channel any intercepted EMI to ground.
2Object-affected harmful factors
If EMI shielding is enhanced, then electromagnetic interference protection improves, but device complexity increases
Solution Approach 1:
Multiple functions are merged into integrated components. The EMI shielding plate is simultaneously attached to both the housing and the PCB, serving as both a shield and a structural element. The ground bar is integrated with the PCB assembly, combining grounding function with the circuit board structure. This merging reduces the number of separate parts and simplifies assembly.
Solution Approach 2:
The EMI shielding plate serves multiple functions: it provides electromagnetic interference shielding, acts as a structural support element, and creates a barrier that defines the internal cavity of the connector. The ground bar simultaneously provides grounding paths and structural reinforcement to the PCB assembly.
3Productivity
If manufacturing efficiency is improved, then production time decreases, but EMI shielding and data transfer capabilities are compromised
Solution Approach 1:
The EMI shielding plate and ground bar are pre-positioned and attached to the housing and PCB respectively before final assembly. This preliminary action ensures that EMI shielding is already in place during critical assembly stages, preventing interference from affecting the manufacturing process or the final product performance.
Solution Approach 2:
The connector structure is designed so that the EMI shielding and grounding elements serve themselves through their geometric configuration. The U-shaped ground bar automatically creates continuous grounding paths, and the EMI plate's positioning relative to the electrical contacts automatically provides optimal shielding without requiring additional adjustment or complex control mechanisms.
Data Source
AI summary
Electrical connectors for connecting various computing devices include a printed circuit board with a plurality of electrical contacts, as well as a ground bar for reducing electromagnetic interference, enclosed within a housing. The counterpart female connector includes a receptacle, disposed within an outer shell and having a cavity configured to receive the connecting plug of the male connector.