Shielded Connector Terminal Geometry for Return Current Noise
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Solution Overview
Problem
Existing connector assemblies experience noise interference due to return currents, which affect signal integrity and efficiency.
Innovation Solution
The connector assembly includes a first connector with a specific terminal design featuring a wide face and narrow face configuration, along with a shield structure that minimizes the distance to a grounded opposed portion, enhancing electromagnetic shielding and reducing noise interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional terminal design is used, then the structure is simple, but noise caused by return currents increases
Solution Approach 1:
The terminal is designed with different cross-sectional areas at different locations: a first cross-sectional area at the first end and a second cross-sectional area at the second end, where the second cross-sectional area is smaller than the first. This local variation in geometry optimizes the return current distribution and reduces noise without requiring complete structural redesign of the entire terminal assembly.
Solution Approach 2:
The terminal structure incorporates varying cross-sectional areas along its length, changing the geometric parameter progressively from the first end to the second end. This parameter change approach allows optimization of electromagnetic characteristics and return current paths while maintaining manufacturing feasibility through standard forming processes.
2Object-affected harmful factors
If the terminal is positioned closer to the opposed portion, then noise reduction is improved, but the distance constraint becomes more difficult to satisfy
Solution Approach 1:
The terminal features an asymmetric cross-sectional configuration where the first cross-sectional area at the first end differs from the second cross-sectional area at the second end. This asymmetric design allows the terminal to achieve optimal noise reduction performance by positioning the larger cross-section closer to the opposed portion while maintaining proper spacing through the tapered geometry, thereby satisfying both noise reduction and manufacturing precision requirements.
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
This design effectively reduces noise caused by return currents, improving signal quality and reliability in high-frequency signal transmission.
Implementation Method 1
a first terminal proximity portion in which a distance to the first opposed portion on the second axis is smaller than a distance between the second specific terminal and the first opposed portion on the second axis
Data Source
AI summary
An object of the present disclosure is to reduce noise caused by a return current. Connector assembly includes first connector and second connector to which first connector is fitted from above. First connector includes first shield and first specific terminal. Second connector includes second specific terminal. First shield has first opposed portion facing first specific terminal on second axis in the fitted state. The first specific terminal includes first terminal proximity portion in which a distance to first opposed portion on second axis is smaller than a distance between the second specific terminal and the first opposed portion on second axis in the fitted state. A projected area obtained by projecting the first wide face onto virtual plane orthogonal to second axis is greater than a projected area obtained by projecting the first narrow face onto the virtual plane.