High-Speed Connector Impedance Continuity Baffle Design
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Solution Overview
Problem
Existing high-speed electrical connectors face challenges in maintaining the characteristic impedance of twisted pair conductors, particularly at the interface between connectors, leading to potential transmission losses due to impedance mismatches and standing wave phenomena.
Innovation Solution
The connector design features a baffle at the end of the insulating insert, ensuring dielectric contact between connectors, which eliminates air gaps and maintains impedance continuity by interpenetrating surfaces, thus preventing sudden insulation breaks and reducing impedance variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If connectors are connected end to end with air gaps between inserts, then the connection is simple and manufacturing is easier, but impedance continuity deteriorates causing transmission losses
Solution Approach 1:
The baffle structure is nested within the insulating insert, creating an internal dielectric extension that protrudes into the adjacent connector. This nested configuration allows the dielectric material to bridge the gap between connectors without adding external complexity, thereby maintaining impedance continuity while preserving the simple connector assembly structure.
Solution Approach 2:
The baffle acts as an intermediary dielectric element between the two connector inserts. By extending the insulating material into the gap region, the baffle mediates the electromagnetic field transition, ensuring smooth impedance matching between connectors without requiring direct insert-to-insert contact or complex positioning mechanisms.
2Reliability
If dielectric contact is ensured between connectors, then transmission losses are reduced, but the connector design becomes more complex
Solution Approach 1:
Rather than making the entire insert complex, the invention applies local quality by adding a baffle only at the critical end region where dielectric contact is needed. The baffle protrudes locally into the adjacent connector to ensure impedance continuity, while the rest of the insert maintains its simple, standard structure for easy manufacturing and assembly.
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 design effectively maintains impedance matching and reduces transmission losses by ensuring continuous dielectric and electromagnetic shielding, optimizing power transfer between transmitter and receiver.
Implementation Method 1
the end portion of said insert is shaped to define, between the two connection elements, a baffle. More specifically, in the connector of the invention, this baffle is capable of conferring dielectric contact on the abutment interface between said insert and another similar insert belonging to another connector, establishing continuity of the dielectric at said interface.
Implementation Method 2
The insert can in particular be installed in a cavity with a metal wall, forming electromagnetic shielding. Said twisted pair can also be covered with a flexible metal sheath forming electromagnetic shielding. Thus, it is possible to ensure continuity of the electromagnetic shielding around the pair of connection elements and beyond.
Data Source
Figure 1~4
Figure 5~6
AI summary
High-speed electrical connector having a constant characteristic impedance. According to the invention, the connector comprises at least one pair of connecting elements (15) installed in an insert (25) made of an insulator, and the end portion of this insert is shaped to define a chicane (37) between the two connecting elements (15).