Shielded Socket Pin Design for Signal Crosstalk Reduction
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Solution Overview
Problem
Signal crosstalk between adjacent pins in CPU packages and motherboards can lead to interference, with existing ground pins often failing to provide sufficient protection, resulting in undesired signal interference levels.
Innovation Solution
The introduction of specifically designed pin shapes with adjacent retention post or cantilever mount segments, where signal and ground pins are positioned to overlap, providing a shielding effect and improving the signal-to-noise ratio by reducing far-end crosstalk (FEXT).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If traditional ground pin arrangements are used, then device complexity is reduced, but signal crosstalk increases causing interference
Solution Approach 1:
The pin arrangement is segmented into specific patterns where ground pins are strategically positioned between signal pins to create isolated signaling regions. This segmentation reduces electromagnetic coupling between adjacent signal pins, thereby reducing crosstalk while maintaining a manageable pin configuration structure.
Solution Approach 2:
Ground pins serve as intermediary elements positioned between signal pins. These ground pins act as electromagnetic shields that intercept and redirect electromagnetic fields, preventing direct coupling between signal pins and reducing crosstalk interference.
2Reliability
If ground pins are positioned to provide shielding, then signal-to-noise ratio improves, but manufacturing precision requirements increase
Solution Approach 1:
The pin arrangement implements local quality by creating specific regions with different electromagnetic characteristics. Ground pins are concentrated in areas where electromagnetic shielding is most needed, while signal pins are positioned in regions optimized for signal transmission. This localized optimization improves signal-to-noise ratio without requiring uniform high precision across the entire pin array.
Solution Approach 2:
The invention changes the spatial parameters of pin positioning, specifically the distances and relative positions between ground pins and signal pins. By optimizing these parameters, the design achieves effective electromagnetic shielding and improved signal-to-noise ratio while keeping manufacturing precision requirements within acceptable limits.
3Object-affected harmful factors
If adjacent pins are positioned to overlap for shielding, then FEXT reduction is achieved, but pin area increases
Solution Approach 1:
The pin arrangement employs a nested pattern where ground pins and signal pins are interlaced in specific sequences. This nesting creates overlapping electromagnetic field regions that provide shielding against far-end crosstalk while efficiently utilizing the available pin array space, minimizing the overall area required.
Data Source
AI summary
Examples described herein relate to a system that includes: a first signal pin and a first ground pin adjacent to the first signal pin. In some examples, the first signal pin comprises a first portion, a second portion, and a third portion. In some examples, the first ground pin comprises a first portion, a second portion, and a third portion, the second portion of the first signal pin comprises a vertical mount, the second portion of the first ground pin comprises a vertical mount, and the second portion of the first signal pin and the second portion of the first ground pin are arranged proximate one another.