Electrical Connector Assembly with Segmented Housing for Impedance Control
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Solution Overview
Problem
Existing electrical connectors face challenges in efficiently mating with multiple paddle cards and providing reliable electrical communication, particularly in configurations that require vertical stacking and secure mounting to substrates like printed circuit boards, while maintaining impedance matching and ease of manufacturing.
Innovation Solution
The electrical connector design features a dual-housing structure with interposed inner housing, leadframe assemblies, and ground plates, allowing for vertical stacking of paddle cards and secure mounting, along with air pockets for improved impedance matching and simplified manufacturing through separate molding of housing components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a single housing structure is used for electrical connectors, then the manufacturing process is simpler, but it is difficult to integrate air pockets and shielding effectively for impedance matching
Solution Approach 1:
The connector housing is divided into multiple separate components: a first housing member, a second housing member, and an inner housing member. This segmentation allows each component to be molded independently with specific features (such as air pockets in the inner housing member) while maintaining overall structural integrity and impedance control when assembled together.
Solution Approach 2:
The inner housing member acts as an intermediary component between the first and second housing members. It provides a platform for integrating air pockets and shielding structures that are critical for impedance matching, while still being contained within the overall housing assembly. This intermediary structure enables precise control of electromagnetic characteristics without complicating the entire manufacturing process.
2Adaptability or versatility
If electrical connectors are designed to mate with multiple paddle cards in vertical stacking, then electrical communication capability is enhanced, but the structural complexity and mounting difficulty increase
Solution Approach 1:
The connector is designed with a vertical stacking configuration where multiple paddle cards are accommodated in the vertical dimension. The inner housing member provides a platform that supports multiple leadframe assemblies arranged vertically, enabling the connector to mate with multiple paddle cards stacked in the vertical direction while maintaining a compact horizontal footprint.
Solution Approach 2:
The housing structure is designed to universally accommodate multiple paddle cards through standardized receptacles and leadframe assemblies. The inner housing member serves multiple functions: providing structural support, integrating air pockets for impedance control, and facilitating the vertical arrangement of multiple signal paths, thereby enabling multi-functionality without proportionally increasing complexity.
3Reliability
If ground plates are integrated between leadframe assemblies, then shielding and electrical performance are improved, but the manufacturing and assembly process becomes more complex
Solution Approach 1:
The ground plates are merged with the inner housing member through integration, where the ground plates form part of the inner housing member's structure. This merging allows the ground plates to be molded or formed together with the inner housing member in a single manufacturing step, eliminating separate assembly operations while maintaining the shielding and electrical grounding functions between leadframe assemblies.
Solution Approach 2:
The inner housing member is formed as a composite structure that combines the housing material with integrated ground plates. This composite construction allows the ground plates to be inherently part of the housing component, providing both mechanical support and electrical grounding functions simultaneously, thereby improving reliability without significantly complicating the manufacturing process.
Data Source
AI summary
An electrical connector is disclosed having a multi-piece connector housing. The housing pieces may be configured to fit together with separation between interior surfaces of the separately manufactured housing pieces. This separation selectively introduces pockets of air adjacent portions of the mating contacts within the connector. The packets of air may be preferentially positioned to provide a more uniform impedance along the length of a mating contact. The separation may be introduced near the mating interface of a receptacle connector, for example, to counter the effects of changes in contact geometry at the mating interface.