Electrical Connector Ribbed Housing and Grounding Bars for Crosstalk Reduction
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Solution Overview
Problem
High-speed electrical connectors, such as those for Serial Attached SCSI (SAS), face challenges with signal transmission beyond 6.0 Gbps due to issues like crosstalk and signal attenuation, particularly at 12 Gbps.
Innovation Solution
The design of an electrical connector with an insulating housing featuring a ribbed structure and specific contact arrangements, including groups of signal and grounding contacts connected by bars, reduces crosstalk by optimizing contact alignment and impedance matching, enabling efficient high-speed signal transmission up to 12 Gbps while maintaining compatibility with lower speed standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If signal transmission speed is increased beyond 6.0 Gbps to achieve higher data rates, then productivity is improved, but crosstalk and signal attenuation increase causing deterioration of signal quality
Solution Approach 1:
The connector is divided into multiple independent contact groups with grounding contacts segmented and connected by connecting bars. This segmentation isolates signal paths and reduces electromagnetic interference between adjacent signals, enabling higher transmission speeds with reduced crosstalk.
Solution Approach 2:
Different contact groups are assigned specific functions (signal, grounding, power) with optimized local configurations. The grounding contacts in each group are unitarily connected by connecting bars at front distal ends, creating localized shielding zones that reduce crosstalk for specific signal paths while maintaining overall connector performance.
2Adaptability or versatility
If more contact groups are added to support both SAS and SATA interfaces, then adaptability is improved, but device complexity increases
Solution Approach 1:
The electrical connector is designed with multiple contact groups that can support both SAS and SATA interfaces through a unified structure. The insulating housing with integrated tongue portion and contact arrangement allows the same connector to accommodate different interface standards, eliminating the need for separate connectors for SAS and SATA.
Solution Approach 2:
Multiple contact groups for different interfaces (SAS and SATA) are merged into a single connector body. The grounding contacts of each group are unitarily connected by connecting bars, consolidating multiple functions into one integrated structure that reduces overall system complexity despite supporting multiple interfaces.
3Volume of moving object
If contact density is increased to maintain compact size, then volume is reduced, but manufacturing precision requirements increase
Solution Approach 1:
Multiple contact groups are nested within the insulating housing structure, with contacts arranged in compact groups on opposite surfaces of the tongue portion. This nesting approach maximizes contact density within the available volume while maintaining adequate spacing and alignment through the structured housing design.
Data Source
AI summary
An electrical connector includes an insulating housing defining an uninterrupted tongue portion with opposite first surface and second surface and a plurality of contacts loaded in the tongue portion. The first surface defines at least one rib. The plurality of contacts includes a first group of contacts with contacting portions loaded in the first surface at one side of the at least one rib, a second group of contacts with contacting portions loaded in the first surface at another side of the rib and a third group of contacts with contacting portions loaded in the second surface opposite to the at least one rib. Each of the second and third group of contacts is composed of signal contacts and grounding contacts. The grounding contacts of each group unitarily connect with each other by a connecting bar at front distal ends thereof.