Card Edge Connector Insulative Block Resonance Reduction
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Solution Overview
Problem
Existing card edge connectors experience resonance issues that hinder high-frequency performance due to the interaction of signal terminals with the air.
Innovation Solution
The introduction of insulative blocks that fill the grooves with signal terminals, isolating them from the air, while grounding terminals remain exposed to reduce resonances and enhance high-frequency performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal terminals are exposed to air in conventional card edge connectors, then electrical transmission is maintained, but resonance interference occurs that degrades high-frequency performance
Solution Approach 1:
The patent introduces an insulating block as an intermediary substance that fills the groove between the signal terminal and the air. This insulating block mediates the interaction by providing electrical isolation while maintaining the structural integrity of the connector, thereby eliminating resonance interference without compromising electrical transmission functionality
Solution Approach 2:
The insulating block creates an inert electromagnetic environment around the signal terminal by replacing the air (which causes resonance) with a non-conductive material. This inert environment prevents the formation of resonant cavities and eliminates the harmful resonance effects while allowing the signal terminal to maintain its electrical connection function
2Reliability
If insulative blocks are added to isolate signal terminals, then resonance is reduced, but device complexity increases
Solution Approach 1:
The insulating block is designed to integrate multiple functions into a single component: it provides electrical isolation for the signal terminal, fills the groove space, and maintains structural support. By merging these functions into one element, the patent reduces the need for additional separate components, thereby limiting the increase in device complexity while achieving resonance reduction
Solution Approach 2:
The insulating block serves multiple purposes simultaneously: it acts as an electromagnetic shield, a structural filler, and a positional reference for the signal terminal. This multi-functionality allows the component to address resonance issues without requiring additional specialized parts, thus minimizing the impact on overall device 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 solution effectively minimizes resonance interference, thereby improving the high-frequency performance of the card edge connector without compromising electrical transmission.
Implementation Method 1
reduce resonances producing by the signal terminals
Data Source
AI summary
A card edge connector includes a longitudinal insulative housing, two rows of terminals and an insulative block fixed therein. The insulative housing includes two side walls and a card slot between the side walls and opening upward, the side walls defines grooves for receiving terminals and opening downward. Each terminal includes a retaining portion fixed in the groove, each row of the terminals including a plurality of signal terminals and a plurality of grounding terminals. Each signal groove loaded with the signal terminal is filled with the insulative block, the block fitly abuts against the retaining portion of the signal terminal.