Cable Connector Shielding Layout for Low Crosstalk
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Solution Overview
Problem
Conventional cable connectors experience crosstalk interference due to the close proximity of upper and lower core wires during high-frequency and high-speed data transmission, leading to signal attenuation and interruption.
Innovation Solution
Incorporation of a bump block with a grounded metal layer between the core wires, embedded in a wire divider with grooves and perforations, to prevent inductive and capacitive coupling and reduce crosstalk.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the core wires are placed close together to reduce connector size, then the connector compactness is improved, but the crosstalk between core wires increases
Solution Approach 1:
A bump block is introduced as an intermediary element positioned between adjacent core wires. This bump block includes a grounded metal layer that acts as a shield, preventing direct electromagnetic coupling between the core wires while allowing the wires to remain in close proximity for compact connector design.
Solution Approach 2:
The solution adds a dimensional element by introducing the bump block structure that extends between the upper and lower core wires. This creates a three-dimensional shielding arrangement that reduces crosstalk without increasing the overall connector footprint, effectively using vertical space to solve a horizontal interference problem.
2Speed
If the transmission speed is increased to meet high-speed data requirements, then the data transmission capability is improved, but the crosstalk interference increases causing signal attenuation
Solution Approach 1:
The bump block with grounded metal layer serves as a mediator that blocks electromagnetic interference between core wires. This shielding structure allows high-speed signal transmission by preventing crosstalk-induced signal degradation, thereby maintaining signal integrity at higher transmission speeds.
Solution Approach 2:
The grounded metal layer in the bump block provides preliminary anti-action by preemptively blocking electromagnetic coupling between core wires before interference can occur. This preventive shielding approach counteracts potential crosstalk effects before they can degrade signal quality during high-speed transmission.
3Ease of manufacture
If no wire divider structure is used to simplify manufacturing, then the manufacturing complexity is reduced, but the core wires cannot be properly isolated leading to crosstalk
Solution Approach 1:
The bump block is introduced as a simple intermediary component that provides effective wire isolation. Rather than using complex wire divider structures, this single element with grounded metal layer achieves crosstalk reduction while maintaining manufacturing simplicity and ease of 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
Significantly reduces near-end and far-end crosstalk, improving signal quality and lowering insertion loss, especially at higher frequencies.
Implementation Method 1
Through the shielding effect of the bump block, it can avoid to form an inductive and capacitive coupling between the upper row core wires and the lower row core wires
Implementation Method 2
avoid to form an inductive and capacitive coupling between the upper row core wires and the lower row core wires
Implementation Method 3
avoid to form an inductive and capacitive coupling between the upper row core wires and the lower row core wires
Data Source
Figure 1
Figure 2
Figure 3~3A
AI summary
This disclosure provides a cable connector, which includes a connector body, a cable, a circuit board, and a bump block. The connector body is provided with a plurality of plug terminals welded on a plurality of terminal pads on the circuit board. A plurality of upper and lower core wires of the cable are welded on a plurality of core wire pads on the top and bottom surfaces of the circuit board. The wire divider includes a plurality of grooves and at least one perforation. Each core wire is embedded in the corresponding groove. The bump block is inserted into the perforation. Part of the bump block passes through the perforation and is located between the cable's upper and lower core wires. Through the shielding effect of the bump block, it can avoid to form the electrical coupling between the upper and lower core wires so as to reduce crosstalk.