Terminal Assembly Crosstalk Reduction via Asymmetric Shielding
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Solution Overview
Problem
Preventing crosstalk between high-frequency signal terminals in electrical connectors remains a significant technical challenge due to electromagnetic interference.
Innovation Solution
A terminal assembly design featuring a first terminal module with signal and ground terminals, where an electric conductive part is positioned closer to the signal terminals than the ground terminals, effectively shielding or absorbing electromagnetic waves to reduce resonance and crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If signal terminals are placed closer together to increase connector density, then productivity and compactness are improved, but crosstalk and electromagnetic interference between adjacent signal terminals worsen
Solution Approach 1:
An electric conductive part is introduced as an intermediary element positioned between adjacent signal terminals. This conductive part acts as a shield that absorbs or redirects electromagnetic waves, preventing them from coupling between neighboring signal terminals. The conductive part is strategically positioned closer to the signal terminals than ground terminals, creating an effective barrier while maintaining compact terminal spacing for high connector density.
Solution Approach 2:
The shielding structure implements local quality by positioning the electric conductive part specifically closer to signal terminals than to ground terminals. This asymmetric positioning creates localized electromagnetic shielding zones around each signal terminal where it is most needed, rather than using uniform grounding. The conductive part is placed at critical locations where electromagnetic coupling occurs most strongly, providing targeted protection against crosstalk while maintaining overall connector compactness.
2Object-affected harmful factors
If ground terminals are placed closer to signal terminals to improve shielding, then crosstalk is reduced, but the signal terminal spacing is reduced limiting connector density
Solution Approach 1:
The electric conductive part serves as an intermediary shielding element that provides effective crosstalk protection without requiring ground terminals to be positioned immediately adjacent to signal terminals. This intermediary structure absorbs electromagnetic energy and prevents direct coupling between signal terminals, allowing greater spacing between signal- ground terminal pairs while maintaining high connector density through optimized terminal arrangement.
Solution Approach 2:
The solution transitions from a two-dimensional planar arrangement where shielding depends on ground terminal proximity, to a three-dimensional configuration where the electric conductive part extends vertically or laterally to provide shielding. This dimensional change allows signal terminals to be spaced farther apart in the plane while maintaining effective electromagnetic shielding through the elevated or extended conductive structure, thereby increasing connector density.
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 significantly reduces electromagnetic interference between signal terminals by strategically placing the conductive part to absorb or shield most electromagnetic waves, minimizing crosstalk and resonance.
Implementation Method 1
the electric conductive part and the ground terminal could surround the first signal terminal, so that most of the electromagnetic waves generated by the first signal terminal are absorbed or shielded by the electric conductive part to reduce resonance or crosstalk between the signal terminals
Implementation Method 2
the electric conductive part and the ground terminal could surround the first signal terminal, so that most of the electromagnetic waves generated by the first signal terminal are absorbed or shielded by the electric conductive part
Data Source
AI summary
The present disclosure disclosed a terminal assembly comprising a first terminal module and an electric conductive part. The first terminal module comprises a plurality of first ground terminals and a plurality of first signal terminals. At least one first signal terminal is provided between two adjacent first ground terminals. The electric conductive part is disposed on the first terminal module. The first signal terminal is closer to a surface of the electric conductive part than the first ground terminal. The electric conductive part is distancing from both the first signal terminal and the first ground terminal while the first signal terminals are closer to the electric conductive part than the first ground terminals, the electric conductive part and the ground terminal could surround the first signal terminal.