Electrical Connector Grounding Structure for Shorter HF Paths
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Solution Overview
Problem
Existing electrical connectors have long conductive paths and unreliable grounding, leading to resonance issues and poor high-frequency signal transmission due to single-point grounding and elongated transmission paths.
Innovation Solution
The electrical connector design features conductive terminals with obliquely extending portions to shorten transmission paths and a grounding member with multiple-point contact, utilizing upper and lower extending arms to stabilize grounding, reducing resonance and signal loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the connecting portion includes a horizontal section and a vertical section to connect the contact portion and soldering portion, then the electrical connector can be mounted on the circuit board with the mating slot and circuit board substantially parallel, but the transmission path becomes long and causes serious resonance
Solution Approach 1:
The connecting portion is divided into multiple sections: a first connecting section extending obliquely downward and backward, and a second connecting section extending vertically downward. This segmentation allows the transmission path to be optimized for shorter length while maintaining the mounting capability through the vertical section that connects to the circuit board.
Solution Approach 2:
The first connecting section extends obliquely in both vertical and horizontal directions simultaneously, utilizing three-dimensional space more efficiently. This dimensional approach shortens the overall transmission path length compared to a purely horizontal extension, while the vertical section maintains the necessary connection to the circuit board.
2Device complexity
If the grounding member elastically abuts the vertical section of each ground terminal at a single point, then the structure is simple, but the contact is unreliable and affects high frequency characteristics
Solution Approach 1:
The grounding member includes multiple grounding sections that contact different portions of the ground terminals at multiple distinct locations. This segmentation of the grounding contact points distributes the electrical connection across multiple interfaces, significantly improving grounding reliability and reducing resonance effects while maintaining reasonable structural complexity.
3Adaptability or versatility
If the conductive terminals in the upper row are arranged with signal terminals between ground terminals, then the connector can handle multiple signal channels, but the transmission path length increases causing resonance issues
Solution Approach 1:
The first connecting sections of the conductive terminals extend obliquely downward and backward, utilizing three-dimensional spatial arrangement. This allows signal terminals to be positioned between ground terminals for multi-channel capability while the oblique extension optimizes the transmission path length by using vertical and horizontal space simultaneously, reducing resonance compared to purely horizontal arrangements.
Data Source
AI summary
An electrical connector includes an insulating body having a mating slot and multiple accommodating slots are in communication with the mating slot. Multiple terminals are accommodated in the accommodating slots. The terminals include ground terminals. Each terminal includes a connecting portion, an elastic arm, a tail portion, and an extending portion located between the connecting portion and the tail portion. The extending portion of each terminal extends obliquely downward and backward from the connecting portion. A grounding member is provided on the insulating body. The grounding member has a multiple upper and lower extending arms. A length of each upper extending arm is shorter than a length of each lower extending arm in the front-rear direction. The upper and lower extending arms respectively abut the ground terminals, thus shortening the transmission paths of the terminals. The grounding member and the ground terminals are in stable connection, thus reducing the resonance.