Shielded Cable Assembly Layout for High-Speed Crosstalk Reduction
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Solution Overview
Problem
Existing cable connector assemblies attenuate high-speed signals and suffer from crosstalk, hindering efficient signal transmission.
Innovation Solution
A cable assembly with divided wires into upper and lower rows, fixed to a wire clamp with a shielding sheet, allowing direct connection to a mainboard and reducing crosstalk through the use of a shielding sheet to isolate the rows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electrical connectors and mating connectors are installed on the device body and cable, then the cable can be connected to the device, but signal attenuation occurs during transmission
Solution Approach 1:
The patent removes the electrical connector and mating connector from the signal transmission path. Instead of using traditional connectors, the cable wires are directly connected to the mainboard, extracting the problematic connector components that cause signal attenuation while maintaining the essential function of electrical connection.
Solution Approach 2:
The cable assembly is pre-configured with wires extending directly from the cable body to the connection point, eliminating the need for connector assembly during installation. This preliminary arrangement of direct wire paths prevents signal degradation that would occur through connector interfaces.
2Device complexity
If multiple wires are arranged in rows for connection, then the connection structure is simplified, but crosstalk between wires increases
Solution Approach 1:
A shielding sheet is introduced as an intermediary element between the upper row and lower row of wires. This shielding sheet acts as a mediator that blocks electromagnetic interference and crosstalk between adjacent wire rows while maintaining the simplified row-based connection structure.
Solution Approach 2:
The shielding sheet provides localized electromagnetic shielding specifically between the wire rows where crosstalk occurs, rather than requiring complete shielding of the entire cable assembly. This targeted approach reduces crosstalk while minimizing additional complexity.
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
Enables higher-speed signal transmission with reduced crosstalk, achieving improved signal integrity and efficiency.
Implementation Method 1
a shielding sheet fixed to the wire clamp, wherein the plurality of wires are divided into an upper row and a lower row and fixed to the wire clamp, front ends of the plurality wires extend forward beyond the wire clamp to be directly connected to a mainboard, and the shielding sheet isolates the upper row of wires from the lower row of wires
Data Source
AI summary
A cable assembly includes: a cable having plural wires; a wire clamp disposed at a front of the cable; and a shielding sheet fixed to the wire clamp, wherein the plural wires are divided into an upper row and a lower row and fixed to the wire clamp, front ends of the plurality wires extend forward beyond the wire clamp to be directly connected to a mainboard, and the shielding sheet isolates the upper row of wires from the lower row of wires.