Pluggable Module Plug Connector Signal Integrity
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Solution Overview
Problem
Existing communication systems face limitations in data throughput due to signal integrity issues caused by the close proximity of double rows of contacts in pluggable modules and communication connectors.
Innovation Solution
A pluggable module design with a plug connector featuring an inner and outer contact assembly, a ground plate, and dielectric frames holding signal and ground plug contacts, with inner and outer ground connecting tabs to improve signal integrity and data throughput by providing electrical shielding and reducing contact proximity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If double rows of contacts are used in pluggable modules and communication connectors, then data throughput is increased, but signal integrity deteriorates due to close proximity of contacts
Solution Approach 1:
The contact assembly is segmented into inner and outer contact assemblies with different contact densities. The inner contact assembly has a first density of contacts while the outer contact assembly has a second density of contacts, creating zones of varying contact proximity. This segmentation allows high data throughput in areas with closer contacts while maintaining signal integrity in areas with spaced-apart contacts.
Solution Approach 2:
Different regions of the contact assembly have different contact densities tailored to specific functional requirements. Signal contacts that require high integrity are positioned in regions with greater spacing, while data contacts can tolerate closer proximity. This local differentiation of contact quality resolves the contradiction between throughput and signal integrity.
2Device complexity
If contacts are placed in close proximity to increase density, then device complexity is reduced, but signal integrity worsens
Solution Approach 1:
The inner contact assembly is nested within the outer contact assembly, with both assemblies sharing a common structure. The inner contact assembly contains inner signal contacts and inner ground contacts, while the outer contact assembly contains outer signal contacts and outer ground contacts. This nested configuration achieves high contact density without compromising signal integrity through proper spacing arrangements.
Solution Approach 2:
The contact assembly utilizes three-dimensional spatial arrangement with inner and outer contact assemblies positioned at different radial distances from the center. This dimensional arrangement allows multiple rows of contacts to be packed densely while maintaining adequate spacing between signal contacts of the same type, resolving the contradiction between density and signal integrity.
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 enhances data throughput and signal integrity by using a dual-mating interface plug connector with a ground plate and dielectric frames, effectively addressing the limitations of existing communication systems.
Implementation Method 1
a ground plate between the inner contact assembly and the outer contact assembly
Data Source
AI summary
A pluggable module includes a pluggable body extending between a cable end and a mating end rearward of the cable end. The pluggable body has a module cavity. The pluggable module includes a module circuit board received in the module cavity. The module circuit board has a mating edge at a mating end configured to be plugged into a first slot of a communication connector. The pluggable module includes a plug connector extending between a plug mating end and a plug mounting end. The plug mounting end is mounted to the module circuit board. The plug connector includes plug contacts extending between the plug mating end and the plug mounting end. The plug mating end is configured to be plugged into a second slot of the communication connector to mate the plug contacts with the communication connector.