Electrical Connector Grounding Layout for Dense Low-Crosstalk Signaling
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Solution Overview
Problem
Existing electrical connectors face challenges in achieving high-speed signal transmission while maintaining high-density and low crosstalk, due to sensitivity to manufacturing tolerances and the need for large intervals between terminal rows, which increases manufacturing difficulty and cost.
Innovation Solution
The electrical connector design includes an insulation base with grounding terminals and differential signal terminal pairs arranged in a specific pattern, where each differential signal pair is located between two adjacent grounding terminals in one row and two adjacent rows, with an electrical connection layer connecting at least two grounding terminals, reducing sensitivity to manufacturing tolerances and improving resonance for stable high-frequency transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If differential signal terminal pairs and grounding terminals are arranged in a staggered manner to achieve high-density, then transmission channel density is improved, but manufacturing precision requirements increase and manufacturing cost increases
Solution Approach 1:
The patent divides the terminal arrangement into distinct terminal rows with standardized patterns, segmenting the complex staggered arrangement into manageable rows that can be manufactured with consistent precision requirements
Solution Approach 2:
The patent changes the arrangement parameter from staggered to aligned terminal rows, which maintains high-density transmission channels while reducing manufacturing precision requirements to conventional levels
2Reliability
If interval between terminal rows is increased to reduce crosstalk, then signal transmission quality is improved, but transmission channel density decreases
Solution Approach 1:
The patent combines multiple grounding terminals into shared grounding structures that serve multiple differential signal pairs, allowing reduced spacing between terminal rows while maintaining effective crosstalk isolation through the combined grounding effect
Solution Approach 2:
Grounding terminals are designed to serve multiple functions: providing reference potential for adjacent differential pairs and acting as crosstalk shields for multiple signal pairs simultaneously, enabling higher density without compromising signal quality
3Manufacturing precision
If conventional manufacturing technology is used to achieve high manufacturing precision, then terminal accuracy is improved, but manufacturing difficulty increases and manufacturing cost increases
Solution Approach 1:
The patent changes the terminal arrangement parameters from staggered to aligned rows with standardized spacing, transforming the manufacturing requirement from high-precision conventional manufacturing to standard manufacturing processes
Solution Approach 2:
The patent adopts a design that tolerates conventional manufacturing variations, effectively treating the terminals as components that don't require expensive high-precision manufacturing, thereby reducing manufacturing cost and difficulty
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 arrangement allows for higher density of transmission channels while maintaining high-speed signal transmission performance, reducing crosstalk and manufacturing costs by ensuring reliable electrical connections and electromagnetic shielding.
Implementation Method 1
The insulation base is provided with an electrical connection layer by which at least two of the plurality of grounding terminals are electrically connected to each other
Data Source
AI summary
An electrical connector includes an insulation base, a plurality of grounding terminals mounted in the insulation base and a plurality of differential signal terminal pairs mounted in the insulation base. The plurality of grounding terminals and the plurality of differential signal terminal pairs are arranged into a plurality of terminal rows. Each of the plurality of differential signal terminal pairs is located between two adjacent grounding terminals in one terminal row and between two other grounding terminals of two terminal rows adjacent to the one terminal row. The insulation base is provided with an electrical connection layer by which at least two of the plurality of grounding terminals are electrically connected to each other.