Backplane Connector Terminal Layout for Stable Differential Coupling
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Solution Overview
Problem
Existing backplane connectors face challenges in achieving effective coupling between differential signal terminals, which affects signal transmission quality.
Innovation Solution
The design incorporates conductive terminals with a torsion portion and specific extending and step surfaces on the differential signal terminals, allowing for improved coupling by perpendicular alignment and narrow-wide side coupling, stabilizing insertion loss and enhancing signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional terminal modules are used with simple linear conductive terminals, then the structure is simple and easy to manufacture, but the coupling effect between differential signal terminals is insufficient and signal transmission quality deteriorates
Solution Approach 1:
The conductive terminal is divided into multiple functional segments: contact portion, first extending portion, torsion portion, and second extending portion. Each segment serves a specific function in achieving proper coupling, and this segmentation allows the complex structure to be systematically designed and manufactured
Solution Approach 2:
The conductive terminal transitions from a simple linear structure to a three-dimensional structure with perpendicular extensions and torsion portions. The first extending portion and second extending portion are perpendicular to each other, creating spatial separation and proper coupling geometry that cannot be achieved with linear terminals
2Reliability
If differential signal terminals are positioned close together for compact design, then device size is reduced, but coupling between the signal terminals becomes insufficient
Solution Approach 1:
By introducing perpendicular extending portions and a torsion portion, the patent achieves effective coupling in three-dimensional space rather than relying solely on linear proximity. The spatial arrangement created by the perpendicular extensions provides the necessary coupling path while maintaining compact overall dimensions
Solution Approach 2:
The torsion portion introduces a curved, spiral configuration that allows the conductive terminal to achieve coupling through a compact curved path rather than a long linear path. This curved geometry enables effective coupling within a smaller spatial footprint
Data Source
AI summary
A terminal module includes a number of conductive terminals. Each conductive terminal includes a contact portion. The conductive terminals include differential signal terminals. Each differential signal terminal includes a first extending portion, a torsion portion, and a second extending portion perpendicular to the first extending portion. The differential signal terminals include a first signal terminal and a second signal terminal. Most of the two first extending portions of the differential signal terminals are narrow-side coupled, and small parts are wide-side coupled. The second extending portions of the differential signal terminals are narrow-sided coupled. The present disclosure also discloses a backplane connector having the terminal module. Compared with the prior art, the present disclosure can make the differential signal terminals tightly coupled, thereby stabilizing the insertion loss.