Connector Impedance Adjusting Portion for Signal Cable
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The exposure of signal cables from their outer shielding increases impedance, degrading transmission efficiency.
Innovation Solution
A connector design where an impedance adjusting portion is positioned close to the exposed signal cables, relative to both the assigned portion and the outer member, to mitigate impedance increases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the signal cable is exposed from the outer member, then the connector structure is simplified and assembly is easier, but the impedance of the signal cable increases
Solution Approach 1:
The patent introduces an impedance adjusting portion as an intermediary element between the exposed signal cable and the outer member. This portion, which includes a conductive layer on the inner wall of the connector body, acts as a mediator to control the electromagnetic field distribution and prevent impedance increase caused by the exposed cable section, thereby resolving the contradiction between assembly simplicity and impedance stability.
2Ease of operation
If the exposed portion of the signal cable is increased for easier connection, then connection ease is improved, but transmission efficiency degrades due to impedance increase
Solution Approach 1:
The patent modifies the electromagnetic field distribution parameters by introducing the impedance adjusting portion with specific conductive layers. This changes the field confinement characteristics and impedance parameters in the exposure region, allowing the cable to be exposed for easier connection while maintaining transmission efficiency through controlled electromagnetic field distribution.
3Reliability
If the shield conductor is extended further to reduce impedance, then impedance control is improved, but the connector structure becomes more complex
Solution Approach 1:
The impedance adjusting portion serves multiple functions: it controls impedance in the exposed cable region, provides electromagnetic shielding, and maintains structural integrity. By combining these functions into a single integrated component rather than extending the shield conductor separately, the patent achieves effective impedance control without significantly increasing connector structure complexity.
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A connector is attachable to a front end of a cable in a front-rear direction. The cable comprises coated signal cables and an outer member which protects the signal cables. The connector comprises terminals, a holding member, a shell, an assigned portion and an impedance adjusting portion. The terminals are attached to the signal cables, respectively, under an attached state where the connector is attached to the front end of the cable. The holding member holds the terminals. The shell covers the holding member to have a predetermined surface which intersects with a perpendicular direction perpendicular to the front-rear direction. The assigned portion is located on the outer member of the cable under the attached state. The impedance adjusting portion is located forward of the assigned portion in the front-rear direction and located inward in the perpendicular direction in comparison with both the predetermined surface and the assigned portion.