Plastic Patch Panel for 10G Ethernet ANEXT Reduction
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Solution Overview
Problem
Conventional patch panels with metal support structures suffer from galvanic and inductive couplings that increase Alien Near End Cross Talk (ANEXT), which is particularly problematic for high-speed Ethernet applications above 10 Gbit/s, as they fail to maintain signal quality due to unwanted crosstalk between connectors.
Innovation Solution
A patch panel with a completely plastic front panel and cable clamp elements, eliminating metal components to reduce capacitive and galvanic signal coupling, featuring increased spacing between receptacles and a plastic cable holder design to minimize interference and facilitate clear cable routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a metal support structure is used in the mounting device, then mechanical strength and stability are improved, but galvanic and inductive couplings increase causing higher ANNEXT
Solution Approach 1:
The patent removes all metal components from the mounting device, including the support structure, cable clamp elements, and cable holders. This extraction of metal parts eliminates the source of galvanic and inductive couplings that cause ANNEXT, while the mechanical functions are replaced by plastic components with appropriate design features for strength and stability.
Solution Approach 2:
The patent replaces durable metal components with plastic components that can be manufactured more easily and at lower cost. While plastic may have different durability characteristics, the design compensates through structural optimization, and the reduced cost and manufacturing complexity justify the material substitution for high-speed Ethernet applications where ANNEXT reduction is critical.
2Ease of manufacture
If metal components are used in the mounting device, then ease of manufacture is improved, but signal quality deteriorates due to increased crosstalk
Solution Approach 1:
By removing metal components entirely from the mounting device, the patent eliminates the crosstalk problem while maintaining ease of manufacture. Plastic components can be manufactured using injection molding and other efficient processes, and the design integrates multiple functions into single components to simplify assembly.
Solution Approach 2:
The patent uses plastic as a composite material solution that combines electrical insulation properties with mechanical structural capabilities. The plastic components are designed with integrated features such as recesses for cable positioning, latching mechanisms for connection sockets, and structural reinforcements to achieve both manufacturing efficiency and signal quality requirements.
3Device complexity
If standard spacing between receptacles is used, then device complexity is reduced, but ANNEXT-based crosstalk increases
Solution Approach 1:
The patent applies different spacing requirements to different regions of the mounting device. The lateral distance between adjacent receptacles is increased to at least 1.4 times the receptacle width to reduce ANNEXT, while the vertical distance between rows can maintain standard spacing since crosstalk between vertically adjacent sockets is less critical. This localized quality adjustment optimizes signal quality without excessively increasing 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
The solution significantly reduces ANEXT-induced crosstalk, enhancing signal quality and compatibility with 10 Gigabit/s Ethernet standards by eliminating metal components and optimizing cable management, thereby improving transmission reliability.
Implementation Method 1
the metal support structure can lead to galvanic and inductive couplings that increase the ANNEXT
Implementation Method 2
the metal support structure can lead to galvanic and inductive couplings that increase the ANNEXT
Implementation Method 3
a reduction in the mutual capacitive and galvanic signal coupling into neighboring connection sockets can be achieved
Data Source
AI summary
The invention relates to an assembly device for line and plug connector elements for telecommunication and data technology, comprising at least one front panel (5), with a support structure (12) with lateral support elements (14) and at least one panel (11) with a number of recesses (10) for connector bushes, the front panel (5) being completely made of plastic.