Cable Assembly Terminal Arrangement for Crosstalk Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing cable assemblies for high-speed signal transmission face challenges with cross-talk due to complex terminal arrangements, making it difficult to solder signal and grounding wires, which affects high-frequency performance.
Innovation Solution
A cable assembly with terminals arranged in groups where the mating and terminating portions of signal and grounding terminals are on the same row, simplifying the manufacturing process and reducing the need for extensive peeling of the metallic shielding layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals are arranged in an isosceles triangle configuration with mating sections on different rows, then high frequency performance is improved through better signal isolation, but the complexity of soldering signal and grounding wires increases significantly
Solution Approach 1:
The terminal arrangement is segmented into distinct functional zones: signal terminals occupy one row while grounding terminals occupy another row. This segmentation allows signal wires to be soldered to signal terminals and grounding wires to be soldered to grounding terminals independently, simplifying the soldering process while maintaining the electrical isolation benefits of the isosceles triangle configuration.
Solution Approach 2:
The grounding function is extracted and separated from the signal transmission path by placing grounding terminals on a different row from signal terminals. This extraction allows the metallic shielding layer to be peeled back only as much as necessary to access signal terminals for soldering, without requiring extensive exposure that would compromise high frequency performance.
2Object-affected harmful factors
If terminals are arranged with tail sections on different rows, then signal isolation is improved, but the metallic shielding layer must be peeled for a longer distance affecting high frequency performance
Solution Approach 1:
The terminal arrangement utilizes a two-dimensional grid layout where signal terminals and grounding terminals are positioned on different rows (vertical dimension) but aligned such that their tail sections converge at the same horizontal position. This dimensional arrangement allows the metallic shielding layer to be peeled back a minimal distance to expose only the necessary terminal portions for soldering, while maintaining cross-talk isolation through the vertical separation of signal and grounding functions.
3Ease of manufacture
If signal and grounding terminals are positioned to facilitate easy soldering, then manufacturing simplicity is improved, but cross talk between signal lines increases
Solution Approach 1:
The terminal arrangement applies different spatial configurations to different functional groups: signal terminals are positioned in one row optimized for signal wire access, while grounding terminals are positioned in a separate row optimized for grounding wire access. This local optimization allows each terminal type to be accessed independently with minimal peeling of the metallic shielding layer, facilitating easy soldering while the vertical separation between rows maintains electrical isolation and reduces cross-talk between signal lines.
Data Source
AI summary
A cable assembly comprises a housing, a plurality of terminals received in the housing and divided into several terminal groups and a cable electrically connected with the plurality of terminals. Each terminal group comprises a pair of signal terminals and a grounding terminal. Each terminal defines a body portion, a mating portion extending forwardly from a front end of the body portion, and a terminating portion extending rearwardly from a rear end of the body portion. The two mating portions of the pair of signal terminals and a mating portion of the grounding terminal of each terminal group are located on two different rows, and two terminating portions of the pair of signal terminals and a terminating portion of the grounding terminal of each terminal group are located on a same row.