RJ-45 Connector Substrate Segmentation for Crosstalk Reduction
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Solution Overview
Problem
There is a need for communication connectors capable of transmitting high-speed data exceeding 10 Gigabits per second, particularly in compliance with category 8 or similar standards, to meet the increasing demand for higher data transmission rates.
Innovation Solution
The development of a communication connector plug and outlet configuration that includes a housing body, housing cover, latch member, insulator, substrate, plug contacts, comb member, and strain relief member, designed to comply with the RJ-45 standard and optimized for high-speed data transmission by reducing crosstalk and insertion loss through specific arrangements of plated through-holes and conductive planes on the substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional connector designs are used, then manufacturing and assembly are simpler, but data transmission rate and signal quality deteriorate at high frequencies
Solution Approach 1:
The substrate is divided into multiple sections with different via hole configurations. Specifically, the substrate includes a first section with first plated through-holes and a second section with second plated through-holes, where the via hole patterns differ between sections. This segmentation allows optimization of signal transmission characteristics for high-speed data transmission while maintaining manufacturability.
Solution Approach 2:
Different regions of the substrate are assigned different via hole densities and patterns tailored to local signal requirements. The first plated through-holes are positioned at different locations compared to the second plated through-holes, creating localized impedance control and signal integrity optimization in specific areas where high-frequency signals are transmitted.
2Reliability
If plated through-holes are added to reduce crosstalk, then signal quality improves, but manufacturing complexity increases
Solution Approach 1:
The patent extracts and emphasizes the critical function of plated through-holes in signal transmission. By carefully selecting the position, density, and pattern of plated through-holes (first plated through-holes in the first section, second plated through-holes in the second section), the design achieves signal quality improvement while controlling manufacturing complexity through standardized via hole implementations.
3Speed
If category 8 compliance is achieved, then data transmission capability improves, but connector design complexity increases
Solution Approach 1:
The patent merges multiple functional requirements into a unified substrate design. The substrate simultaneously provides mechanical support, electrical connection through plated through-holes, signal integrity control, and crosstalk reduction all in one integrated structure. This merging achieves Category 8 compliance while managing design complexity through consolidation rather than separate components.
Data Source
AI summary
A communication plug configured to be mated with a communication outlet. The plug has first contacts configured to physically contact and form electrical connections with second contacts of the outlet. The plug also includes a substrate with wire contacts and first, second, third, and fourth layers. The first layer includes first conductors connecting a first portion of the first contacts with a first portion of the wire contacts. The fourth layer includes second conductors connecting a second portion of the first contacts with a second portion of the wire contacts. The second layer includes a first plurality of capacitor plates electrically connected to first selected ones of the first contacts. The third layer includes a second plurality of capacitor plates electrically connected to second selected ones of the first contacts. Each of the first plurality of capacitor plates forms a capacitor with at least one of the second plurality of capacitor plates.