Electrical Connector Mating Faces for 24 Gbps Transmission
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Solution Overview
Problem
Current electrical connectors face limitations in achieving high-speed data transmission beyond 12 Gbps while maintaining backwards compatibility with lower speed connectors, necessitating an improved design for higher resonance frequency and reduced inserting force.
Innovation Solution
The electrical connector design features a plug connector with a housing and mating tongue, divided into multiple mating faces, and terminals arranged in groups with specific lengths and orientations to optimize signal transmission, including differential signal pairs and grounding terminals, and optional grounding bars to enhance resonance frequency and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the data transmission speed is increased to achieve higher speed (e.g., 24 Gbps), then the signal transmission capability is improved, but the resonance frequency requirements become more stringent and inserting force increases
Solution Approach 1:
The connector is divided into multiple mating faces (first, second, third, fourth mating faces) with terminals arranged in distinct groups on each face. This segmentation allows differential signal pairs to be isolated on specific faces while grounding terminals are positioned on adjacent faces, reducing electromagnetic interference and optimizing signal integrity at high speeds without requiring excessive inserting force.
Solution Approach 2:
Different regions of the connector are assigned different functions: the first and third mating faces are dedicated to differential signal pairs for high-speed data transmission, while the second and fourth mating faces are assigned to grounding terminals. This local quality differentiation ensures that signal and ground functions are spatially separated, improving resonance frequency characteristics and reducing cross-talk at 24 Gbps speeds.
2Speed
If the connector design is modified to achieve 24 Gbps speed, then the high-speed transmission capability is improved, but compatibility with existing lower speed connectors may be compromised
Solution Approach 1:
The connector design incorporates multiple mating faces with different terminal configurations that can serve different functions. The same physical connector structure can support both high-speed 24 Gbps transmission when all four mating faces are utilized, and lower speed transmissions by activating only the necessary terminal groups. This multi-functionality ensures backwards compatibility while enabling future high-speed applications.
Solution Approach 2:
The connector utilizes a three-dimensional arrangement with four distinct mating faces instead of a traditional single-plane configuration. This dimensional expansion allows for more flexible terminal grouping and signaling schemes, enabling the same connector to support multiple data rates by selectively activating different face combinations, thus achieving both high-speed capability and backwards compatibility.
3Reliability
If the terminal arrangement is optimized for high-speed transmission, then the signal integrity is improved, but the device complexity increases
Solution Approach 1:
The terminal structure is segmented into four distinct groups positioned on four different mating faces, with each group serving a specific function (differential signals or grounding). This segmentation simplifies the routing and shielding requirements for high-speed signals by concentrating them on specific faces, thereby improving signal integrity while keeping the overall structural complexity manageable through systematic organization.
Data Source
AI summary
A plug connector includes a housing with a rear base and a front mating tongue in a mating direction and a plurality of terminals arranged in the housing in a lateral direction. The front mating tongue defines a first face and a second face. The first side defines a rib thereby the first face being divided to a first mating face, a third mating face and a second mating face on the rib. The second face is defined as a fourth mating face. The terminals include plate portions exposed upon the mating tongue and mounting legs outside the housing. The terminals are divided to four groups, the plate portions of the four groups are exposed upon the mating faces respectively. Each of the first and second groups of terminals includes grounding terminals and differential signal pairs, the plate portions of the differential signal pairs have a length equal to 3.2 mm.