Memory Module Connector Layout for Crosstalk and EMI Isolation
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Solution Overview
Problem
Conventional memory module connectors face challenges with signal degradation, cross talk, and electromagnetic interference at higher data rates due to insufficient isolation between signal and power paths, limiting performance and scalability while complicating efforts to minimize board footprint.
Innovation Solution
A connector design with C-shaped pins arranged in clusters, featuring a third cluster of pins orthogonal to the first and second clusters, which improves mechanical balance and electrical performance by orthogonal pin orientations, reducing cross talk and enabling high-density pin configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional connector architectures are used with signal and power lines in close proximity, then board footprint is minimized, but signal degradation, cross talk, and electromagnetic interference increase at higher data rates
Solution Approach 1:
The patent introduces a third dimension to the traditional two-sided pin arrangement by adding a middle cluster of pins that extend perpendicular to the first and second clusters. This spatial reconfiguration increases isolation between signal and power paths in three-dimensional space, reducing electromagnetic interference and cross talk while maintaining compact board footprint through vertical stacking of pin clusters.
Solution Approach 2:
The connector pins are segmented into three distinct clusters (first, second, and middle clusters) with different orientations and functions. This segmentation separates signal paths from power paths by assigning them to different clusters, thereby reducing electromagnetic coupling and interference while maintaining high pin density through organized spatial distribution.
2Reliability
If pins are arranged in traditional two-sided clusters, then mechanical stress is balanced, but isolation between signal and power paths is insufficient at higher data rates
Solution Approach 1:
The patent adds a middle cluster of pins extending in a direction perpendicular to the first and second clusters, creating a three-dimensional pin arrangement. This dimensional expansion provides additional spatial separation between signal and power paths, improving signal integrity through enhanced isolation while the systematic organization of clusters maintains manageable configuration complexity.
3Productivity
If pin density is increased to improve data transfer rates, then performance improves, but electromagnetic interference and cross talk increase
Solution Approach 1:
The patent applies different pin orientations and cluster arrangements to different spatial locations within the connector. The middle cluster pins are oriented perpendicular to the side clusters, creating local variations in electromagnetic field distribution. This localized differentiation allows high pin density overall while maintaining low interference through position-dependent optimization of signal and power path separation.
Data Source
AI summary
Disclosed herein is a compression mount connector for a memory module with an additional cluster of pins between the typical two clusters of pins. The pins of the third cluster include a first subset of pins and a second subset of pins, wherein each pin of the first subset form a partially enclosed shape (e.g., a C-shape) that opens along a direction that is oblique to the direction of the first and second pins. Each pin of the second subset also forms a partially enclosed shape that opens in a direction that is opposite to the direction of the pins of the first subset.