Ground Terminal Multi-Point Contact for USB-C Shielding
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Solution Overview
Problem
Existing USB TYPE C electrical connectors with shielding sheets fail to effectively reduce noise and crosstalk between terminals, limiting their high-frequency transmission performance.
Innovation Solution
The electrical connector design includes a ground terminal with multiple contacting portions that urge against a shielding sheet, forming multiple signal return paths, enhancing the grounding effect and improving high-frequency performance by ensuring effective noise and crosstalk reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shielding sheet is embedded in the insulating body with a single grounding path, then the structure is simple, but the noise and crosstalk reduction effect is insufficient
Solution Approach 1:
The ground terminal is divided into multiple contacting portions (first contacting portion and second contacting portion) that contact different positions on the shielding sheet. This segmentation creates multiple independent grounding paths, enhancing the shielding effect against noise and crosstalk while maintaining a relatively simple overall structure.
Solution Approach 2:
The grounding connection transitions from a single-point contact to multi-point contact across different spatial dimensions. The first contacting portion contacts the shielding sheet at one position while the second contacting portion contacts at another position, creating a distributed grounding network that improves interference reduction without significantly increasing structural complexity.
2Reliability
If multiple contacting portions are added to the ground terminal, then the grounding effect and high-frequency performance are improved, but the manufacturing complexity increases
Solution Approach 1:
Multiple contacting portions are integrated into a single ground terminal component rather than using separate components. This merging approach maintains reliability through multiple contact points while simplifying manufacturing by reducing the number of discrete parts that need to be assembled.
Solution Approach 2:
The ground terminal serves multiple functions simultaneously: it provides mechanical support, electrical connection, and multi-point grounding. The same structure that ensures reliable high-frequency transmission also facilitates manufacturing by combining multiple functions into a single component design.
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
The enhanced grounding effect and multiple signal return paths significantly improve the high-frequency transmission performance of the electrical connector by effectively conducting interference signals to the grounding path, reducing noise and crosstalk.
Implementation Method 1
The first contacting portion and the second contacting portion respectively electrically contact with the shielding sheet
Data Source
AI summary
An electrical connector includes an insulating body, a shielding sheet disposed in the insulating body, and a ground terminal received in the insulating body for mating with a mating connector. The ground terminal is fixed between a plate surface of the shielding sheet and the insulating body. The ground terminal includes a front end, a middle section, and a rear end having a soldering portion. A first contacting portion is disposed at the front end, a second contacting portion is disposed at the middle section, and the first contacting portion and the second contacting portion respectively electrically contact with the shielding sheet.