Shielded Cable Connector Cavity for High-Speed Signal Integrity
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Solution Overview
Problem
Existing cable connectors face challenges in maintaining signal integrity during transmission, particularly in high-speed applications, where signal cross-talk and interference are prevalent.
Innovation Solution
The implementation of a shielding cavity formed by conductive terminals and shielding sheets, along with a specific mating surface arrangement, enhances signal integrity by creating a surrounding shield that encloses signal terminals and grounds, ensuring perpendicular electrical connections to the circuit board.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If shielding sheets and ground terminals are added to form a shielding cavity, then signal transmission quality is improved, but device complexity increases
Solution Approach 1:
The shielding sheets and ground terminals are integrated within the connector body structure, forming a nested shielding cavity that houses the signal terminals. This nesting approach provides comprehensive electromagnetic shielding while maintaining a compact overall structure, resolving the contradiction between improved signal quality and device complexity.
Solution Approach 2:
The shielding cavity is specifically configured around the signal terminals where electromagnetic interference is most critical, rather than providing uniform shielding throughout the entire connector. This localized shielding approach improves signal transmission quality in the most vulnerable areas while minimizing the overall structural complexity.
2Object-affected harmful factors
If multiple contact portions and protrusions are added to shielding sheets, then shielding effect is improved, but manufacturing complexity increases
Solution Approach 1:
Multiple shielding sheets with different contact portions and protrusions are combined to form a complete shielding cavity system. Each shielding sheet is designed with specific features that, when assembled together, provide comprehensive electromagnetic shielding. This modular combining approach improves the shielding effect while making each individual component easier to manufacture.
Solution Approach 2:
The shielding structure is divided into multiple separate shielding sheets rather than using a single complex piece. Each shielding sheet can be manufactured independently with simpler geometries, then assembled to form the complete shielding cavity. This segmentation reduces the manufacturing complexity of individual components while achieving superior overall shielding performance.
3Reliability
If mating surfaces are arranged perpendicular to pressing direction, then electrical connection reliability is improved, but manufacturing precision requirements increase
Solution Approach 1:
The mating surfaces are designed to be perpendicular to the pressing direction, ensuring that electrical contact is established across the entire contact area simultaneously when the connector is mated. This perpendicular arrangement creates an equipotential contact condition that improves electrical connection reliability, while the standardized orientation simplifies the manufacturing and assembly process.
Solution Approach 2:
The perpendicular mating surface arrangement serves multiple functions: it ensures reliable electrical contact, facilitates easy identification of correct insertion orientation, and simplifies the manufacturing process by using a consistent reference direction. This universal design approach improves connection reliability without significantly increasing manufacturing precision requirements.
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
This configuration improves signal transmission quality by reducing cross-talk and interference, while allowing for efficient and reliable electrical connections without the need for elastic arms, thus enhancing connector performance.
Implementation Method 1
the first contact portion, the first ground terminal, the third contact portion, the first protrusion, the second protrusion, the second contact portion, the second ground terminal and the fourth contact portion are jointly enclosed to form a shielding cavity; and the first signal terminal and the second signal terminal are located in the shielding cavity
Data Source
AI summary
A cable connector includes a body, a number of conductive terminals, a cable, a first shielding sheet and a second shielding sheet. The conductive terminals include a first signal terminal, a second signal terminal, a first ground terminal and a second ground terminal. The first shielding sheet includes a first contact portion, a second contact portion and a first protrusion. The second shielding sheet includes a third contact portion, a fourth contact portion and a second protrusion. The first contact portion, the first ground terminal, the third contact portion, the first protrusion, the second protrusion, the second contact portion, the second ground terminal and the fourth contact portion are jointly enclosed to form a shielding cavity. The first signal terminal and the second signal terminal are located in the shielding cavity.