Interposer Shielding Network for Electrical Connector Grounding Mismatch
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Solution Overview
Problem
The existing electrical connectors face challenges in achieving effective shielding due to the mismatch in grounding technologies between chip modules and printed circuit boards, leading to increased interference at high transmission speeds and frequencies.
Innovation Solution
An electrical connector assembly is designed with an interposer between the connector and the printed circuit board, featuring a shielding element and terminals that match the material and structure of the printed circuit board, forming a whole shielding network by electrically connecting the chip module, connector, and printed circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shielding device is added to the electrical connector, then the shielding effect is improved, but the compatibility with different grounding technologies (chip module vs. printed circuit board) deteriorates due to technology mismatch
Solution Approach 1:
The patent introduces an adaptor as an intermediary component between the electrical connector and the printed circuit board. This adaptor includes a shielding layer with grounding contacts that can match the shielding device of the electrical connector, while its outer surface forms a grounding net that interfaces with the printed circuit board's grounding layer. This intermediary structure resolves the technology mismatch between chip module grounding and printed circuit board grounding, enabling both shielding effectiveness and broad compatibility.
2Speed
If transmission speed is increased, then data transfer performance is improved, but interference from signal contacts increases
Solution Approach 1:
The patent applies preliminary anti-action by pre-establishing a comprehensive grounding network through the adaptor before high-speed signal transmission occurs. The shielding layer and grounding contacts are positioned to preemptively block interference paths, and the grounding net on the adaptor's outer surface creates a reference potential that prevents interference from coupling into signals. This preliminary grounding structure counteracts interference effects before they can degrade high-speed transmission.
3Object-affected harmful factors
If a whole grounding net is implemented for better shielding, then shielding effectiveness is improved, but the complexity of matching different grounding technologies increases
Solution Approach 1:
The adaptor is designed with universal multi-functionality: it provides shielding through its internal shielding layer, creates a grounding net on its outer surface for printed circuit board interfacing, and incorporates grounding contacts that interface with both chip module grounding and printed circuit board grounding technologies. This single component performs multiple grounding functions simultaneously, eliminating the need for separate matching structures for different technologies and reducing overall system complexity.
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
This configuration enhances the shielding effect by creating a unified grounding network, reducing interference and maintaining compatibility with different interval configurations between the electrical connector and printed circuit board.
Implementation Method 1
the interposer electrically connect the terminals and the shielding element and electrically connect the printed circuit board
Implementation Method 2
The electrical connector not only includes signal contacts, but also includes grounding contacts assembled around the signal contacts, so as to prevent the interference produced by the signal contact
Data Source
AI summary
An electrical connector assembly includes a printed circuit board, an electrical connector assembled on the printed circuit board and an interposer assembled between the electrical connector and the printed circuit board, the electrical connector includes an insulative housing and a plurality of terminals and a shielding element received therein, and wherein the interposer electrically connect the terminals and the shielding element and electrically connect the printed circuit board.